Answer:
57.1428571429 miles per hour Round off the answer to what your teacher asked.
Step-by-step explanation:
Since we want final answer in miles per hour, lets change the 30 mins to 0.5 hours
Phase 1 =25miles per 0.5 hours
Phase 2 = (200miles-25miles) per 3 hours
Speed = distance/time
Average speed = total distance/ time
Total distance is 200miles because both phases say from new york that means it travels 25 miles away from new york then 3 hours later it is 200 miles away from new york
total time =3 hours+0.5 hours = 3.5 hours
Average speed = 200/3.5
Average speed = 57.1428571429 miles per hour
Rate brainliest please
We want to get the average speed between the 30 minute and 3-hour time frame.
The average speed in that time frame is 70 miles per hour.
We will define average speed as the quotient between the distance travelled and the time it takes to travel that distance.
We know that at 30 minutes, the car is 25 miles away from NY
At 3 hours, the car is 200 miles away from NY.
So the distance travelled in that time frame is:
200 miles - 25 miles = 175 miles.
And the time between 30 minutes and 3 hours is just:
3 h - 0.5h = 2.5 h
So the average speed is:
S = (175 mi)/(2.5 h) = 70 mi/h
The average speed is 70 miles per hour.
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Jamaal knows that it is certain that he will win the election because he is the only person who is running for class treasurer. Which value represents the probability that he will win the election?
Answer:
The probability is 1
Step-by-step explanation:
P ( Jamaal winning) = Jamaal / number of people running
= 1/1
= 1
Answer:
1
Step-by-step explanation: :-)
Rearrange the following steps in the correct order to locate the last occurrence of the smallest element in a finite list of integers, where the integers in the list are not necessarily distinct.
a. return location
b. min ≔a1 and location ≔1
c. min ≔ai and location≔i
d. procedure last smallest(a1,a2,...,an: integers)
e. If min >= ai then
Answer:
The rearranged steps is as follows:
d. procedure last smallest(a1,a2,...,an: integers)
b. min ≔a1 and location ≔1
e. If min >= ai then
c. min ≔ai and location≔i
a. return location
Step-by-step explanation:
The proper steps to perform the task in the question above is dbeca
Here, the procedure (or function) was defined along with necessary parameters
d. procedure last smallest(a1,a2,...,an: integers)
The smallest number is initialized to the first number on the list and its location is initialized to 1
b. min ≔a1 and location ≔1
The next line is an if conditional statement that checks if the current smallest number is greater than a particular number
e. If min >= ai then
If the above condition is true, the smallest value is assigned to variable min; it's location is also assigned to variable location
c. min ≔ai and location≔i
The last step returns the location of the smallest number
a. return location
Pleasssseeeeee helllllllpppppp
Answer:
Question 2:
A) A and C
B) D and F
Which expression is equivalent to
squrt 64a^6
Answer:
[tex]8a^3[/tex]
Step-by-step explanation:
[tex]\sqrt{64a^6}[/tex]
[tex]\sqrt{64} \times \sqrt{a^6}[/tex]
[tex]8 \times \sqrt{a^6}[/tex]
[tex]8 \times a^{6 \times \frac{1}{2} }[/tex]
[tex]8 \times a^{\frac{6}{2} }[/tex]
[tex]8 \times a^3[/tex]
Answer:
[tex]8a^3[/tex]
Step-by-step explanation:
= [tex]\sqrt{64a^6}[/tex]
= [tex]\sqrt{8*8*(a^3)^2}[/tex]
= [tex]8a^3[/tex]
Any help would be great
Hey there! :)
Answer:
[tex]-25m^{6}n^{9}[/tex]
Step-by-step explanation:
The product rule means that when multiplying variables with exponents, the exponents must be added together. Therefore:
[tex](-5m^{5}n^{6})(5mn^{3}) =[/tex]
[tex]-25m^{5+1}n^{6+3} =[/tex]
Simplify:
[tex]-25m^{6}n^{9}[/tex]
This is your answer!
Tasha wants to take money out of the ATM for a taxi fare. She wants to do a quick estimate to see if taking $120 out of her bank account will overdraw it. She knows she had $325 in the account this morning when she checked her balance. Today she bought lunch for $19, a dress for $76, a pair of shoes for $53, and a necklace for $23. She also saw a movie with a friend for $12. Rounding each of her expenses to the nearest tens place, estimate how much money Tasha has left in her account before she goes to the ATM. Do not include the $ in your answer.
Answer:145
Step-by-step explanation: $19=20 76=80 53=50 23=20 12=10 total = 180 325-180 =145
26
Ping lives at the corner of 3rd Street and 6th Avenue. Ari
lives at the corner of 21st Street and 18th Avenue. There is
a gym į the distance from Ping's home to Ari's home.
24
22
20
n
Ari (21.18)
7
x =
18
(x2 – x) + x3
mi+n
16
Avenue
14
-- ( , Jive - y) +
12
10
Where is the gym?
00
6
Ping (36)
4
2
9th Street and 10th Avenue
12th Street and 12th Avenue
0 14th Street and 12th Avenue
15th Street and 14th Avenue
2
x
4 6 8 10 12 14 16 18 20 22 24 26
Street
Corrected Question
Ping lives at the corner of 3rd Street and 6th Avenue. Ari lives at the corner of 21st Street and 18th Avenue. There is a gym 2/3 the distance from Ping's home to Ari's home. Where is the gym?
9th Street and 10th Avenue 12th Street and 12th Avenue 14th Street and 12th Avenue 15th Street and 14th AvenueAnswer:
(D)15th Street and 14th Avenue
Step-by-step explanation:
Ping's Location: (3rd Street, 6th Avenue)
Ari's Location: (21st Street, 18th Avenue)
The gym is at point P which is [tex]\dfrac{2}{3}[/tex] the distance from Ping's home to Ari's home.
That is, Point P divides the line segment in the ratio 2:1.
We use the section formula:
[tex](x,y)=\left(\dfrac{mx_2+nx_1}{m+n}, \dfrac{my_2+ny_1}{m+n}\right)[/tex]
m:n=2:1, [tex](x_1,y_1)=(3,6), (x_2,y_2)=(21,18)[/tex]
[tex]=\left(\dfrac{2*21+1*2}{2+1}, \dfrac{2*18+1*6}{2+1}\right)\\=\left(\dfrac{45}{3}, \dfrac{42}{3}\right)\\=(15,14)[/tex]
The gym is located at 15th Street and 14th Avenue.
Help me please thank u
Answer:
4+3n
Step-by-step explanation:
We get the formula 4+3n because the pattern is +3 each term starting with the first term as 7. Since the first term is 7, we get 4+3n.
Solve 2cos3x=0.9.
Pls help me with this trigonometric equations with multiple angles.
Answer:
[tex]x=\frac{cos^{-1}(0.45)+2n\pi}{3} ,x=\frac{2\pi- cos^{-1}(0.45)+2n\pi}{3}[/tex]
Step-by-step explanation:
Given: [tex]2 cos(3x)=0.9[/tex]
To find: solutions of the given equation
Solution:
Triangle is a polygon that has three sides, three angles and three vertices.
Trigonometry explains relationship between the sides and the angles of the triangle.
Use the fact: [tex]cos x=a[/tex]⇒[tex]x=cos^{-1}(a)+2n\pi,x=2\pi-cos^{-1}(a)+2n\pi[/tex]
[tex]2 cos(3x)=0.9[/tex]
Divide both sides by 2
[tex]cos(3x)=\frac{0.9}{2}=0.45[/tex]
[tex]3x=cos^{-1}(0.45)+2n\pi,3x=2\pi- cos^{-1}(0.45)+2n\pi[/tex]
So,
[tex]x=\frac{cos^{-1}(0.45)+2n\pi}{3} ,x=\frac{2\pi- cos^{-1}(0.45)+2n\pi}{3}[/tex]
What is the product ? (7x^2 )(2x^3 +5)(x^2-4x-9)
Answer:
C
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
Edge 2021
Which means "a number n increased by 6.2"?
Answer:
n + 6.2
Step-by-step explanation:
Increased here means addition, addition of 6.2 with the number n.
1/5 as a percent rounded to the nearest hundredth
Answer:
1/5 as a percent is 20%
Step-by-step explanation:
Answer: 20%
Step-by-step explanation: Let's turn it into a decimal by dividing!
1 ÷ 5 = 0.2
0.2 x 100 = 20 = 20%
I hope this helps!
Jimmie invested $57,500 at 9.38% compounded continuously. What will Jimmie's account balance be in 42 years?
Answer:
$6,259,057.84
Step-by-step explanation:
hello,
compounding continuously means that we have to multiply by
[tex]e^{0.0938*t}[/tex]
t is the number of years
so the account balance in 42 years is
[tex]57,500e^{0.0938*42}=6,259,057.84....\\[/tex]
so it gives
$6,259,057.84
hope this helps
There are 15,958,866 adults in a region. If a polling organization randomly selects 1235 adults without replacement, are the selections independent or dependent? If the selections are dependent, can they be treated as independent for the purposes of calculations? Are the selections independent or dependent?
Answer:
The selections are dependent.
Yes, they can be treated as independent (less than 5% of the population).
Step-by-step explanation:
Since the selections are made without replacement, each selection affects the outcome of the next selection and, therefore, the selections are dependent.
Although they are dependent, the selections can be treated as independent if the sample size is no more than 5% of the total population. In this case, the sample size is 1235 adults out of a population of 15,958,866 adults. The percentage represented by the sample is:
[tex]P=\frac{12,345}{15,958.866}*100\\ P=0.077\%[/tex]
Thus the selections can be treated as independent for the purposes of calculations.
Which answer shows 2.13786 times 10 Superscript 4 written in standard form?
Answer:
Answer:
21378.6
Step-by-step explanation:
You move the decimal point four places towards the right.
Answer:
21378.6
Step-by-step explanation:
Kinda been stuck on this one, someone pls let me know
Answer:
255
Step-by-step explanation:
use calculator
Answer:
255
Step-by-step explanation:
∑ᵢ₌₁⁸ 2ⁱ⁻¹
Using brute force method:
S = 2⁰ + 2¹ + 2² + 2³ + 2⁴ + 2⁵ + 2⁶ + 2⁷
S = 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128
S = 255
Using formula:
S = a₁ (1 − rⁿ) / (1 − r)
S = 1 (1 − 2⁸) / (1 − 2)
S = 255
Which of the following lines has a slope of -1/2? my options are x - 2 y = 0 - x + 2 y = 0 x + 2 y = 0
Answer: So x + 2y = 0 is your answer
Step-by-step explanation:
if you look simplify all of these, you will get:
x - 2y = 0
-2y = -x
y = 1/2x No
-x + 2y = 0
2y = x
y = 1/2x No
x + 2y = 0
2y = -x
y = -1/2x Yes!
So x + 2y = 0 is your answer
Answer:So x + 2y = 0 is your answer
Step-by-step explanation:
if you look simplify all of these, you will get:
x - 2y = 0
-2y = -x
y = 1/2x No
-x + 2y = 0
2y = x
y = 1/2x No
x + 2y = 0
2y = -x
y = -1/2x Yes!
So x + 2y = 0 is your answer
Richard has just been given a 6-question multiple-choice quiz in his history class. Each question has four answers, of which only one is correct. Since Richard has not attended class recently, he doesn't know any of the answers. Assuming that Richard guesses on all six questions, find the indicated probabilities. (Round your answers to three decimal places.)
What is the probability that Richard will answer at least half the questions correctly?
Answer:
0.169
Step-by-step explanation:
This is a question on binomial distribution where we only have two outcomes: success or failure
Binomial distribution formula:
P(X= x) = n!/[x!(n-x)!] p^x × q^(n-x)
n is the number of questions in the quiz n = 6
Probability of guessing a correct number = probability of success = p
We told each question has 4 options in which one is correct.
The probability of guessing a correct answer = p= 1/4
p = 0.25
q = 1-p = 1-0.25
q = 0.75
Probability that Richard will answer at least half the questions correctly = P(X≥3)
P(X≥3) = P(X=3) +P(X=4) +P(X=5) +P(X=6)
See attachment for details
P(X≥3) = 0.01318 + 0.0330 + 0.0044 + 0.0002
P(X≥3) = 0.1694
The probability that Richard will answer at least half the questions correctly = 0.169
Using traditional methods, it takes 11.7 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 23 students and observed that they had a mean of 12.1 hours with a standard deviation of 1.4. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. Find the value of the test statistic. Round your answer to three decimal places.
Answer:
There is no evidence to said that the technique performs differently than the traditional method.
Step-by-step explanation:
First, we need to write the null and alternative hypothesis as:
H0: x = 11.7
H1: x ≠ 11.7
Where x is the population mean for the new method.
Taking into account that the population distribution is approximately normal and the standard deviation of the population is unknown, we can calculated the statistic as:
[tex]t=\frac{x'-x}{\frac{s}{\sqrt{n} } }[/tex]
Where t follows a distribution t-student with n-1 degrees of freedom.
So, replacing x' by the mean of the sample, s by the standard deviation of the sample and n by the size of the sample, we get:
[tex]t=\frac{12.1-11.7}{\frac{1.4}{\sqrt{23} } }=1.37[/tex]
Then, we can find the critical points as:
P(t<t1) = 0.025
P(t<t2) = 0.975
So, with 22 degrees of freedom, the critical point t1 and t2 are equal to -2.07 and 2.07 respectively.
Since 1.37 is between the critical points, we can't reject H0. it means that there is no evidence to said that the technique performs differently than the traditional method.
6, 9, 15, 24, 36, 51, ?
Answer:
6, 9, 15, 24, 36, 51, 69, 90, 114
Answer:
6, 9, 15, 24, 36, 51, 69, 90, 114 and so on........
Golden algae are a group of protists whose color is due to carotenoid pigments: yellow and brown. Most have two flagella and all are photosynthetic. A group of students was given a sample of one of these (Dinobryon) that is colonial. Their instructions were to design two or more experiments that could be done with these organisms. The students decide that for one of their experiments, they want to see whether the organisms can photosynthesize. Which of the following is the most appropriate hypothesis for their experiment?
a. If the Dinobryon are kept in the dark, then one-half will be expected to die in 5 days.
b. If the Dinobryon can live without exposure to light for > 5 days, then they must be able to photosynthesize.
c.If the Dinobryon can live > 5 days without added food, then they must be able to photosynthesize.
d.If the Dinobryon are able to photosynthesize, then they should contain photosynthetic pigments
e. If the Dinobryon photosynthesize, then they must need no other minerals or nutrients and will be able to live in distilled water and light alone.
Answer:
Option-D
Step-by-step explanation:
Golden algae are the protists which can photosynthesize and possess flagella. In the given question, a hypothesis has to be proposed which could explain the photosynthesis process in the golden algae process.
A hypothesis is a predicted statement which is based on the previous knowledge and can explain the natural event in. Also, the hypothesis can be tested with the experiments.
The hypothesis shows the possibility of the natural event therefore hypothesis begins with the If the word. In the given question, the statement that if Dinobryon can photosynthesise then they should contain the photosynthetic pigments is considered correct hypothesis which can be tested through the experiments.
Thus, Option-D is the correct answer.
Please answer this correctly
Answer:
There are 10 teams.
Step-by-step explanation:
Given that the question wants at least 48 swimmers so any numbers above 47 are counted.
In this diagram, there are 10 teams consisting 48 swimmers and above, 48, 52, 53, 63, 76, 79, 82, 84, 85 and 86.
Answer:
10 teams have 48 or more swimmers.
Step-by-step explanation:
If we look at stem 4 there is one team with 48 members.
So counting from there we have:
1 + 2 + 1 + 2 + 4
= 10 teams.
Any help would be greatly appreciated
Answer: 267.9
Step-by-step explanation:
Since we are given the radius, we can plug it into the equation given.
[tex]V=\frac{4}{3} \pi (4)^3[/tex]
[tex]V=\frac{4}{3} \pi (64)[/tex]
[tex]V=267.9[/tex]
PLEASE ANSWER, URGENT!!! In a math exam, Zach, Wendy, and Lee have an average score 91. Wendy, Lee and Chen have an average score 89. Zach and Chen have an average score 95. What is Zach's score?
Answer:
98
Step-by-step explanation:
Z as Zach; W as Wendy; L as Lee; C as Chen
We know that average score of Z,W, and L is 91, so:
(z + w + l)/3 = 91
z + w + l = 273
Average score W, L, C = 89, so:
(w + l + c)/3 = 89
w + l + c = 267
We take both:
(z + w + l) – (w + l + c) = 273 – 267
z – c = 6
Average score Z and C = 95
(z + c)/2 = 95
z + c = 190
(z + c) – (z – c) = 184
2c = 184
c = 92
z + c = 190
z + 92 = 190
z = 98
So, Zachs score is 98
Find the area of the smaller sector.
A
6 in
030°
Area = [? ]in?
B
Round your answer to the nearest hundredth.
Answer:
9.42 in²
Step-by-step explanation:
The area of whole circle S=pi*R² , where pi is appr. 3.14, R= 6 in
S= 3.14*6² =113.04 in²
The area of smaller sector is Ssec=S/360*30=113,04/12=9.42 in²
The area of the smaller sector with a central angle of 30 degrees and a radius of 6 inches is 9.42478 square inches.
To find the area of a sector, you can use the formula:
Area of sector = (θ/360) × π × r²
where θ is the central angle in degrees, r is the radius of the sector.
The central angle is 30 degrees and the radius is 6 inches.
Plugging these values into the formula:
Area of sector = (30/360) × π × 6²
= (1/12) × π × 36
= (1/12) × 3.14159 × 36
= 9.42478 square inches
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will k+10, k+12, k+14 yield consecutive odd integers
Answer:
yes, as long as k is an odd number
Step-by-step explanation:
if k is odd integer
k+10 k +12 K+14 are all odd integer
if k is even integer
k+10 k +12 K+14 are all even integer
hope this helps
The ratio of boys to girls in a group is 2:1. If there are 18 more boys than girls, work out how many girls there are.
Answer:
I think its 18, because if there's 2 boys to 1 girl then if there's 18 girls then there is an equivalent 18 boys to match, plus another 18, which would put the ratio of boy to girl at 2:1
Step-by-step explanation:
Two points are located along a one dimensional coordinate system. The first point is at 2.1 cm and the second point is at 1.8 cm. What is the distance (in cm) between the two points? [Enter only the numerical value, not the unit cm.]
Answer:
Distance = 0.3
Step-by-step explanation:
We have two point in a line (one dimension).
One point is at 2.1 units and 1.8 units.
The distance between two points can be calculated as the absolute value of the difference between the position of each point.
This can be derived from the distance formula for two dimensions:
[tex]d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\\\y_1=y_2=0\\\\d=\sqrt{(x_2-x_2)^2}\\\\d=|x_2-x_1|[/tex]
Then, for this case, the distance is:
[tex]d=|1.8-2.1|=|-0.3|=0.3[/tex]
Caitlin has cut out a square piece of graph paper that contains a total of 81 blocks.How many blocks are there along one side of the square? Look at the bottom of the page (Number 25)
Answer:
9 squares on each side of the square.
Step-by-step explanation:
[tex]\sqrt{81}=\sqrt{9\times 9}=\sqrt{9^2}=9[/tex]
There are 9 equally sized blocks on one side of square piece of graph paper.
Best Regards!
What does 3 represent in the equation y = 3x ? the -intercept the slope yintercept
Answer:
The slope
Step-by-step explanation:
Its equation: y= ax (where a represents the slope)
y =3x
Hope this helps
Good Luck
