The results of the study suggest that verbal reinforcement does affect response rates.
The mean number of students raising their hands for Group 1 (14.3) is significantly higher than the mean number of students raising their hands for Group 2 (11). This indicates that verbal reinforcement does lead to higher response rates.
Response rate is a measure of the proportion of people who respond to a given stimulus. For example, in the study mentioned above, the response rate for each group was measured by the number of students who raised their hands when questions were asked. A higher response rate indicates that more people are responding to a given stimulus.
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A random number generator is used to select an integer from 1 to 3 inclusive. What is the difference between the estimated probability that a 3 is generated and the actual probability that a 3 is generated?
Answer: The estimated probability of generating a 3 using the random number generator is 1/3, since there are 3 possible outcomes and each is equally likely.
The actual probability of generating a 3 is also 1/3, since the generator is equally likely to generate any of the 3 possible integers.
Therefore, the difference between the estimated and actual probability of generating a 3 is:
1/3 - 1/3 = 0
So there is no difference between the estimated and actual probability of generating a 3.
Step-by-step explanation:
given center c and marked on circle c with being an inscribed angle, which is true?
Center C and [tex]~\overset{\LARGE{\frown}}{AD}[/tex] marked on circle C with ∠AVD being an inscribed angle, the option 3) m ∠AVD = 1/2 [tex]m~\overset{\LARGE{\frown}}{AD}[/tex] is true
It is given that C is a center of circle and ∠AVD is inscribed angle.
An inscribed angle is an angle with its vertex on the circle, formed by two intersecting chords. This common end point is the vertex of the angle. The measure of an inscribed angle is half the measure of the intercepted arc.
Inscribed Angle = 1/2 of Intercepted Arc
Therefore m ∠AVD = 1/2 [tex]m~\overset{\LARGE{\frown}}{AD}[/tex]
So, the option 3) m ∠AVD = 1/2 [tex]m~\overset{\LARGE{\frown}}{AD}[/tex] is true when center C and [tex]~\overset{\LARGE{\frown}}{AD}[/tex] marked on circle C with ∠AVD being an inscribed angle
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The complete question is in the image below
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
What is the solution to this equation?
The solution of the given equation is 1/4
What is the solution to an equation?
In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.
Given equation can be rewritten as:
(1/8 -x)^(1/3) = -1/2
raising the power 3 on both the sides, we get
(1/8 -x) = (-1/2)³
(1/8 -x) = -1/8
=> x= 1/8 + 1/8 = 2/8 = 1/4
The solution of the given equation is 1/4
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how to change 6 as decimal ?
110 in binary is equal to 6 as decimal.
Let's say you have a number in base 2 (binary) that you want to convert to decimal. The number is 110.
To convert this to decimal, you would use the following formula:
decimal equivalent = [tex](d_n * base^n) + (d_n-1 * base^(n-1)) + ... + (d_1 * base^1) + (d_0 * base^0)[/tex]
where:
[tex]d_n, d_n-1, ..., d_1, d_0[/tex] are the digits of the number
base is the base of the number system (in this case, 2 for binary)
n is the number of digits in the number minus 1
Using this formula,
we can convert 110 in binary to decimal as follows:
decimal equivalent = [tex](1 * 2^2) + (1 * 2^1) + (0 * 2^0)[/tex]
= 4 + 2 + 0
= 6
Therefore, 110 in binary is equal to 6 in decimal.
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What is the easiest way to calculate square root?
The simplest way to calculate a square root is determined by the size of the number to be squared and your level of mathematical comfort. Here are some methods to consider:
Calculator: Using a calculator is the simplest way to calculate a square root. To find the square root of a number, most calculators have a square root function. Enter the number and then press the square root button.
Estimation: You can use estimation to find an approximate value for the square root of a number. To find the square root of a number, round it to the nearest perfect square (e.g. if you want to find the square root of 15, round it to 16). Then, calculate the square root of the perfect square (in this case, 4), and use that as an estimate.
Long Division: Long division is another method for determining the square root of a number. This method takes longer, but it can be used to calculate the exact value of the square root. Many guides and tutorials are available online to help you learn how to perform long division for square roots.
Using logarithms: A more advanced method for determining the square root of a number is to use logarithms. This method entails taking the number's logarithm, dividing it by 2, and then taking the antilogarithm of the result. This method is useful for calculating the square roots of very large numbers.
Otherwise, Vedic mathematics is a techniques which help in calculation of long and tricky problems or equations.
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Find the weighted average of the numbers 1 and 6, with weight four-fifths on the first number and one-fifth on the second number. a. 2 b. 6.2 c. 3 d. 2.8
The weighted average of the given numbers 1 and 6 is 2.
What is a weighted average?
A weighted average is the average of a set of integers with different associated "weights" or values. The weighted average can be calculated by multiplying each value by its weight, then adding the results.
We are given two numbers as 1 and 6.
The formula of weighted average is as follows
Weighted average = (first number x weight of first number) + (second number x weight of second number)
We are given weights as four-fifths on the first number and one-fifth on the second number.
So,
⇒Weighted average = (1 x 4/5) + (6 x 1/5)
⇒Weighted average = 4/5 + 6/5
⇒Weighted average = 10/5
⇒Weighted average = 2
Hence, the weighted average of the given numbers 1 and 6 is 2.
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how many feet in acre
Answer:
43,560ft
Step-by-step explanation:
What are units?A unit can be used for measurement, and is commonly found in mathematics to describe length, size, etc.
1 Acre = 43,560 feetTherefore, for every 1 acre it is equivalent to 43,560 feet.
A __________ distribution summarizes the information from one variable ONLY, without considering ANY information from another variable.
A- joint ("and").
B- conditional.
C- marginal.
A option (c) marginal distribution summarizes the information from one variable ONLY, without considering ANY information from another variable.
A distribution is a mathematical function that shows the likelihood of different values occurring for a given variable.
Now, a marginal distribution summarizes the information from one variable ONLY, without considering ANY information from another variable. It shows the probability of each value occurring for that variable.
In mathematical terms, we can represent a marginal distribution as follows:
P(X = x) = ∑P(X = x, Y = y) for all possible values of y
Here, X is the variable we're interested in, and Y is the other variable that we're not considering. P(X = x) is the probability of X taking on the value x, and P(X = x, Y = y) is the joint probability of X taking on the value x and Y taking on the value y. The summation is taken over all possible values of y.
Therefore, option (c) is correct.
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rational number definition
A rational number is one that has a non-zero denominator and can be written as a fraction of two integers.
A rational number is one that has a non-zero denominator and can be written as the ratio of two integers. This indicates that a rational number must have an integer denominator and numerator, and that the denominator cannot be 0.
Rational numbers can be positive or negative, and they include all integers, fractions, and terminating or repeating decimals. A and b can be stated as a/b when both of them are integers and b is not equal to 0. It is essential to understand rational numbers in mathematics, and fields like computer science, physics, and engineering frequently use it in their daily work. as well as computer science.
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what is a types of quadrilaterals?
Types of quadrilaterals are parallelograms, rectangles, squares, rhombi, trapezoids, kites, and isosceles trapezoid.
A polygon having four sides and four angles are called a quadrilateral. Quadrilaterals come in a wide variety of forms, each with its own set of qualities and attributes.
Some of the most typical varieties are listed below:
Parallelogram - A quadrilateral has opposing sides that are equally long and parallel.
Rectangle - A parallelogram with all angles at 90 degrees is referred to as a rectangle.
Square - A rectangle with equally long sides.
Rhombus - A parallelogram with equal-length sides is referred to as a rhombus.
Trapezoid - A quadrilateral with just one set of diagonally opposed sides is called a trapezoid.
Kite - A quadrilateral has two sets of adjacent sides that are of equal length or a kite.
Isosceles trapezoid - An isosceles trapezoid is one with equally long non-parallel sides.
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what are odds of winning mega millions
The odds of winning the Mega Millions jackpot are approximately 1 in 302 million.
The chances of winning the Mega Millions Jackpot, which requires matching each of the five white balls and the gold Super Ball, are around 1 of every 302 million. The chances of winning any award in Uber Millions, which incorporates matching essentially the Super Ball, are around 1 of every 24. The size of the award relies upon the quantity of matching numbers and the Super Ball, with the big stake being the biggest award. The likelihood of winning the bonanza increments somewhat as the quantity of tickets sold increments, however it stays an exceptionally low likelihood occasion. Notwithstanding the slim chances, a great many individuals play the Uber Millions lottery consistently with expectations of becoming quite wealthy.
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Point D is the center of the inscribed circle of ABC. Which step can you use to draw the inscribed circle of ABC?
A.
Draw arcs of equal lengths intersecting , , and in two points each.
B.
Draw the perpendicular bisectors of , , and that pass through point D.
C.
Label a point E on and draw a line joining E with D.
D.
Draw a line through D that is perpendicular to one of the sides, , , or .
E.
Draw one arc each on and , and find their point of intersection.
Answer:
The step which is used is to construct the altitude from the incentre to a side of triangle and label the intersection point.
Step-by-step explanation:
Given point d is is the center of inscribed circle.
To construct the inscribed circle of abc we have several steps of construction
Step 1: First step is to construct the incenter with the help of angle bisectors of two base vertices.
Here given d center of inscribed circle that means the incenter given.
Step 2: After incenter, draw a line perpendicular to one side of triangle that passes through incenter and the label the point of intersection.
This is very important step because after labelling measure the radius(same as the distance between the incenter and labelled point) and draw the circle.
Hence, after incenter The next step is to construct the altitude from the incentre to a side of triangle and label the intersection point.
Step 2 is used draw inscribed circle when incenter already given.
what is 3.5 kg to lb?
3.5 kg is approximately equal to 7.7162 pounds ( rounded to four decimal places )
The conversion factor to convert kg to pounds is 2.20462
1 kg = 2.20462 pounds
The conversion is the process of changing the unit of one quantity to another units
The conversion factor is defined as the number that is used to change one unit to another units by multiplying or dividing
The mass in pounds = The mass in kg × conversion factor
Substitute the values in the equation
1 kg = 2.20462 pounds
3.5 kg = 3.5 × 2.20462
Multiply the numbers
= 7.7162 pounds ( rounded to four decimal places )
Therefore, 3.5 kg is 7.7162 pounds
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Dana is preparing cheese plates for her chess club's holiday party. She cuts a block of Colby into 9 equal pieces. Dana serves 6 pieces when the party starts. She saves 3 pieces to serve later.
What fraction of the block of Colby does Dana serve when the party starts?
Dana cuts a block of Colby cheese into 9 equal pieces. She serves 6 pieces when the party starts, which is 2/3 of the block. She saves 3 pieces to serve later, leaving 1/3 of the block remaining.
What are fractions?Fractions represent the parts of a whole or collection of objects. A fraction has two parts. The number on the top of the line is called the numerator. The number below the line is called the denominator.
Dana cuts a block of Colby cheese into 9 equal pieces. This means that each piece is 1/9th of the block of Colby cheese.
Dana serves 6 pieces of the cheese when the party starts. So the total amount of cheese that she serves is 6 times the size of each piece, which is:
6 pieces x (1/9th of the block) = 6/9 or 2/3 of the block.
Therefore, Dana serves 2/3 of the block of Colby cheese when the party starts.
She saves 3 pieces to serve later, which means that there are still 3/9 or 1/3 of the block of Colby cheese left.
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Please Help!! Will Give Brainliest!! :)
In a bag of 400 jelly beans, 15% of the jelly beans are red. When one bean is selected, another of the same color replaces it.
What is the probability that three beans in a row are red?
Answer:
Step-by-step explanation:
The probability that one randomly selected jelly bean is red is 15% or 0.15. Because another jelly bean of the same color is replaced after each selection, the probability of selecting a red jelly bean on any given selection remains constant at 0.15.
The probability of selecting three red jelly beans in a row can be calculated using the multiplication rule of probability. According to this rule, the probability of two independent events occurring together is the product of their individual probabilities.
Therefore, the probability of selecting three red jelly beans in a row is:
P(three red jelly beans in a row) = P(red) x P(red) x P(red)
= 0.15 x 0.15 x 0.15
= 0.003375 or 0.3375%
Therefore, the probability that three beans in a row are red is 0.3375%.
David has a smart phone data plan that costs $30 per month that includes 6 GB of data, but will charge an extra $10 per GB over the included amount. How much would David have to pay in a month where he used 4 GB over the limit? How much would David have to pay in a month where he used went over by xx GB?
He would have to pay a total of $30 + $10 xx.
What is the basic arithmetic operation?
The four basic mathematical operations are Addition, subtraction, multiplication, and division.
If David used 4 GB over the limit, he used a total of 6 + 4 = 10 GB of data that month. Since he was charged $10 per GB over the included amount, he would have to pay an extra $10 x 4 = $40 in addition to the base $30 cost.
Therefore, he would have to pay a total of $30 + $40 = $70 that month.
If David went over the limit by xx GB, he would have used a total of 6 + xx GB of data that month.
Therefore, he would have to pay an extra $10 x xx in addition to the base $30 cost.
Hence, he would have to pay a total of $30 + $10 xx.
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Influencers with more than 50,000 followers earn $200 per 100,000 views in a single video. They also earn a standard video payment of $50.
If v is the number of 100,000 views per video, write rationlan expression fr the total payment an influencer with more than 50,000 subscribers receives per video. How much does an influencer earn if a video they publish has 1 million views?
Answer:
Therefore, the influencer would earn $52 for a video with 1 million views.
Step-by-step explanation:
REDUCTION FORMULA Any trigonometric function whose argument is 90° ± 0, 180° ± 0 and 360°10 can be written simply in terms of 8. DERIVING REDUCTION FORMULAE REDUCTION FORMULAE FOR FUNCTION VALUES OF 180°±0 1. FUNCTION VALUES OF 180⁰-0 In the figure P (√3; 1) and P' lie on the circle with radius 2 units. OP makes an angle 0-30° with the x-axis. P' 0 2 1809-0 O 2 0 P 1.1. If points P and P' are symmetrical about the y-axis, determine the coordinates of P'.
The coordinates of P' are (-√3, 1).
Given that P is located on a circle with a radius of two and an origin at its centre, the following trigonometric ratios can be used to determine P's coordinates:
Sin is equal to the opposite/hypotenuse and cos is equal to the adjacent/hypotenuse.
P's coordinates are as a result:
y = 2 sin = 2(1/2) = 1 and x = 2 cos = 2(3/2) = 3.
The x-coordinate of P' will be the opposite of the x-coordinate of P since P and P' are symmetrical about the y-axis, or x' = -3. P' will have the same y-coordinate as P, meaning that y' = 1. Hence, P's coordinates are (-3, 1).
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4. Find the number of right angle turned through by the hour hand of a clock when it goes from 3 to 6.
5. What fraction of a clockwise revolution does the hour hand of a clock turn through when it goes from 12 to 3?
Answer:
23
Step-by-step explanation:
Please solve all of these!
The answers are:
a)the number we're looking for is [tex]2^{(-97.5)}[/tex], or approximately [tex]1.629 x 10^{(-30)}.[/tex]
b)the value of a is -13.
c) there were 61 people in the line before the second round of people squeezing in.
What is algebra?
Algebra involves solving equations and manipulating expressions to find the value of unknown quantities. It involves working with numbers, variables, and mathematical operations such as addition, subtraction, multiplication, and division.
11. We can solve this problem by using the properties of exponents and algebra.
Let the number we're looking for be x. Then, we can write the equation:
x * 8⁶⁵ = 16⁵⁰
We can simplify the right side of the equation by using the property:
[tex]a^2 = (a^{1/2})^2[/tex]
So, we have:
[tex]16^{50} = (2^4)^{50} = 2^{(4*50)} = 2^{200}[/tex]
Now we can substitute this into the equation:
[tex]x * 8^{65} = 2^{200}[/tex]
We can simplify the left side of the equation by using the property:
[tex]a^n * b^n = (ab)^n[/tex]
So, we have:
[tex]x * (8^2)^{32.5} = (2^3)^{32.5} = 2^{(3*32.5)} = 2^{97.5}[/tex]
Now we can substitute this into the equation:
[tex]x * 64^{32.5} = 2^{97.5}[/tex]
We can simplify the left side of the equation by using the property:
[tex]a^{(n/2)} = (a^n)^{(1/2)}[/tex]
So, we have:
[tex]x * (2^6)^{32.5} = x * 2^{(6*32.5)} = x * 2^{195}[/tex]
Now we can substitute this into the equation:
[tex]x * 2^{195} = 2^{97.5}[/tex]
We can simplify both sides of the equation by dividing by [tex]2^{195}[/tex]:
[tex]x = 2^{97.5} / 2^{195}[/tex]
[tex]x = 2^{(-97.5)}[/tex]
Therefore, the number we're looking for is [tex]2^{(-97.5)}[/tex], or approximately [tex]1.629 x 10^{(-30)}.[/tex]
12. We can find the equation of the line using the two given points and then use the fact that the line passes through the origin to solve for a.
First, we can find the slope of the line using the two given points:
slope = (y2 - y1) / (x2 - x1)
slope = (3 - 9) / (40 - (2a + 50))
slope = -6 / (-2a - 10)
slope = 3 / (a + 5)
Now we can use the point-slope form of the equation of a line to write the equation of the line passing through the two given points:
y - 9 = (3 / (a + 5))(x - (2a + 50))
Simplifying this equation, we get:
y - 9 = (3x / (a + 5)) - (6a + 150 / (a + 5))
Now we can use the fact that the line passes through the origin to solve for a:
When x = 0, y = 0, so we can substitute these values into the equation:
0 - 9 = (3(0) / (a + 5)) - (6a + 150 / (a + 5))
-9(a + 5) = 6a + 150
Expanding and simplifying:
-9a - 45 = 6a + 150
-15a = 195
a = -13
Therefore, the value of a is -13.
14. Bree can organize her trip in different ways depending on how many countries she decides to visit. If she visits only one country, there is only one way to organize her trip. If she visits two countries, she can either choose to visit the second country or skip it, which gives her 2 possible ways to organize her trip. If she visits three countries, she has 2 options for the second country and 2 options for the third country (visit or skip), giving her a total of 2x2 = 4 ways to organize her trip. Following this logic, we can create a table to show the number of ways Bree can organize her trip for different numbers of countries:
Number of countries | Number of ways to organize a trip
1 1
2 2
3 4
4 8
5 16
6 32
7 64
Therefore, Bree can organize her trip in a total of 1 + 2 + 4 + 8 + 16 + 32 + 64 = 127 ways.
13. Let's start by working backward. After the second round of people squeezing in, there are 121 people in the line. Let's call the number of people in the line before the second round "x". Then we can set up an equation to represent this situation:
121 = x + (x-1)
The reason we have x-1 in the equation is that between each pair of people in the original line, one person squeezed in during the first round, so we have one less gap between people in the new line.
Simplifying the equation, we get:
121 = 2x - 1
Adding 1 to both sides, we get:
122 = 2x
Dividing both sides by 2, we get:
x = 61
Therefore, there were 61 people in the line before the second round of people squeezing in. But before the first round, there were also gaps between people, so the actual initial number of people in the line is one more than the number of gaps. Since there are x-1 gaps between x people, there were 60 gaps and therefore 61 initial people in the line.
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7. Which of the following is the best estimate of the correlation coefficient for the data shown in the scatter plot? A. -0.9 B. -0.4 C. 04 D. 09
The correlation coefficient for the data shown in the scatter plot is- 0.9.
What does correlation coefficient mean?The correlation coefficient is a measure of the strength of the linear relationship between two variables. It ranges from -1 to 1, where -1 indicates a perfect negative correlation, 0 indicates no correlation, and 1 indicates a perfect positive correlation. The correlation coefficient can be used to measure the strength of the linear correlation between two variables, as well as identify whether a relationship between two variables is positive or negative. It can also be used to compare the strength of different relationships between multiple variables.
The scatter plot shows a strong negative linear relationship between the two variables, indicating that as one variable increases, the other variable decreases. Therefore, the correlation coefficient is likely to be close to -1, making -0.9 the best estimate.
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A book cost $18 that is 3 times more than a dvd how much does a dvd cost
Answer:
Hi! This question tells us that the book costs $18 and that it costs 3 times more than a DVD. In order to determine the cost of the DVD, all we have to do is divide 18 by 3. 18 divided by 3 is 6. Therefore, the DVD costs $6.
Hope this helps!
Answer:$6
Step-by-step explanation: 18÷3=6
round this number to nearest hundredth 45.007
Answer:
45.01
Step-by-step explanation:
You round to the nearest hundredth so since seven is big enough you add a 1 to the hundredth place
After her birthday sleepover, Roxanne's dad made mini pancakes for breakfast. All of the pancakes were either blueberry or chocolate chip. He made 108 mini pancakes in all. There were 3 times as many blueberry pancakes as chocolate chip pancakes. How many blueberry pancakes did Roxanne's dad make?
As per the unitary method, Roxanne's dad make did make 36 blueberry pancakes.
Here we know that Roxanne's dad made 108 mini pancakes in total, with 3 times as many blueberry pancakes as chocolate chip pancakes.
And we need to solve this problem, we can use the unitary method, which is a simple way to solve problems involving ratios.
As we all know that the unitary method involves dividing the total number of items (108 pancakes) by the ratio (3 blueberry to 1 chocolate chip).
=> 3:1 = 108
When we simplify this gives us the result that 36 blueberry pancakes were made. Therefore, Roxanne's dad made 36 blueberry pancakes
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Rhonda claimed that 8th graders performed better than 7th graders on the state English test.
Complete each of the 2 activities for this Task.
Rhonda recorded a random sample for the state English test scores of 40
seventh graders and 40 eighth graders. A score of 4 is the highest score
and a score of 0 is the lowest score.
Random Sample of 7th and 8th Grade
State English Test Scores
Score 7th Graders
4
3
N
1
0
8
9
18
5
0
8th Graders
3
19
10
7
1
Activity 1 of 2
Activity A: Find two measures of center, the mode and the
median to justify Rhonda's claim that 8th graders
performed better than 7th graders on the state English test.
The 7th graders mode Choose...
The 7th graders median Choose...
The 8th graders mode Choose...
Rhonda's claim that 8th graders performed better than 7th graders on the state English test seems to be supported, as the median and mode for the 8th graders are both higher than those for the 7th graders.
How did we arrive at this assertion?The 7th graders mode: 0 (since it appears twice in the sample)
The 7th graders median: 3.5 (since the scores are already sorted, the median is the average of the two middle scores, which are 3 and 4)
The 8th graders mode: 3 (since it appears twice in the sample)
The 8th graders median: 8.5 (since the scores are already sorted, the median is the average of the two middle scores, which are 7 and 10)
Based on these measures of center, Rhonda's claim that 8th graders performed better than 7th graders on the state English test seems to be supported, as the median and mode for the 8th graders are both higher than those for the 7th graders.
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PLS ANSWER QUICKLY!!!! ILL GIVE BRAINLEST AND 50 POINTS!!!!!
Make sure to find the missing angle measure AND the 2 missing side lengths.
Answer:
Below
Step-by-step explanation:
REMEMBER: for a right triangle sin (30) = opposite LEG/ hypotenuse
so sin 30 = 4 / hypotenuse now, with a calculator sin 30 = 1/2
1/2 = 4 / hypotenuse so hypotenuse = 8
Now it is a right triangle so Pythagorean theorem applies
hyp ^2 = 4 ^2 + BM^2
8^2 = 4^2 + BM^2
48 = BM^2 so BM = sqrt (48 ) = 4 sqrt 3
Finally, all of the internal angles of ANY triangle sum to 180 °
so angle x = 180 - 90 - 30 = 60°
A student is graduating from college in six months but will need a loan in the amount of $2,560 for the last semester. the student receives an unsubsidized stafford loan with an interest rate of 6.8%, compounded monthly, with a six month grace period from the time of graduation. after the grace period the student makes fixed monthly payments of $84.34 for three years. determine the total amount of interest the student paid. a. $985.13 b. $3,036.24 c. $476.24 d. $378.81
The total amount of interest that the student paid for the unsubsidized Stafford loan with an interest rate of 6.8%, compounded monthly is,
⇒ $476.24.
Thus, The correct answer is Option C.
What is mean by Loan?A loan is the lending of money by one or more individuals, organizations, or other entities to other individuals, organizations, or other entities in finance.
Given that;
Borrowed money = $2,560
The fixed monthly payment = $84.34
Hence, The total amount that the student paid for 3 years after the grace period is,
= $84.34 × 3 × 12
= $3036.24
Thus, The amount of interest will be;
⇒ Total amount paid - Sum borrowed
Hence, We get;
Interest = $ 3,036.24- $2,560
= $ 476.24
Therefore, $476.24 is the total amount of interest the student paid.
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please help me solve this paragraph proof for geometry, i’ll mark brainliest
Answer:
To prove that AD is a bisector of BC, we need to show that AD divides BC into two congruent segments.
Since AB ≅ AC, we have ∠BAC ≅ ∠CAB by the isosceles triangle theorem.
Since BD ≅ CD, we have ∠CBD ≅ ∠CDB by the same reasoning.
Now, we can use the angle bisector theorem, which states that if a ray bisects an angle of a triangle, it divides the opposite side into segments that are proportional to the adjacent sides.
Applying the angle bisector theorem to triangle BCD with angle ∠BCD, we get:
BD/DC = AB/AC
Since AB ≅ AC and BD ≅ CD, we can substitute and simplify to get:
BD/CD = 1
This implies that BD ≅ CD.
Therefore, AD divides BC into two congruent segments, and AD is a bisector of BC.
Hope this helps!
What is an equation of the line that passes through the points (-4, -2) and (-6, -5)?
Answer:
Step-by-step explanation:
To find the equation of a line that passes through two given points, we can use the point-slope form of the equation of a line. The point-slope form is:
y - y1 = m(x - x1)
where m is the slope of the line, (x1, y1) is a point on the line, and (x, y) are the coordinates of any other point on the line.
To use this formula, we first need to find the slope of the line that passes through the two given points (-4, -2) and (-6, -5). The slope, denoted by m, is given by the formula:
m = (y2 - y1) / (x2 - x1)
where (x1, y1) = (-4, -2) and (x2, y2) = (-6, -5). Substituting these values, we get:
m = (-5 - (-2)) / (-6 - (-4))
= (-5 + 2) / (-6 + 4)
= -3 / -2
= 3/2
So, the slope of the line is 3/2.
Now, we can choose either of the two given points and use it with the slope to write the equation of the line. Let's use the first point, (-4, -2). Substituting the values of x1, y1, and m in the point-slope formula, we get:
y - (-2) = (3/2)(x - (-4))
Simplifying the right side of the equation, we get:
y + 2 = (3/2)(x + 4)
Expanding the right side, we get:
y + 2 = (3/2)x + 6
Subtracting 2 from both sides, we get:
y = (3/2)x + 4
So, the equation of the line that passes through the points (-4, -2) and (-6, -5) is:
y = (3/2)x + 4
What is 70 degree C into F?
After converting from Celsius to Fahrenheit 70 degrees Celsius is equivalent to 158 degrees Fahrenheit.
To convert Celsius to Fahrenheit, you can use the following formula:
°F = (°C x 9/5) + 32
In this case, to convert 70 degrees Celsius to Fahrenheit, we can substitute 70 for °C in the formula:
°F = (70 x 9/5) + 32
Simplifying this expression, we can first perform the multiplication and division:
°F = (126) + 32
Then we can add 126 and 32 to get the final answer:
°F = 158
It's worth noting that the Celsius and Fahrenheit scales are both used to measure temperature, but they have different starting points and different degrees of scale. Celsius is based on the freezing and boiling points of water, where 0 degrees Celsius is the freezing point and 100 degrees Celsius is the boiling point at sea level.
Fahrenheit, on the other hand, is based on a system of degrees devised by Gabriel Fahrenheit, with 32 degrees being the freezing point and 212 degrees being the boiling point at sea level.
To learn more about temperature click on,
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