Answer:
y equals, 2 x minus 5 in the x y-plane is a line with slope 2 and a y-intercept
Step-by-step explanation:
Answer:
y=2/3+5
Step-by-step explanation:D
This is a very important homework ( pls do answer if u know)
Answ
A., D., B.
Step-by-step explanation:
Marin spends 28% of her monthly income for a Loan payment. her loan payment is rupees 1,736. What is her monthly income?
Answer:
6200 rupees
Step-by-step explanation:
Think the monthly income x
According to the question
The equation is
x×28%=1736
x×28/100=1736
x=1736÷28/100
x=1736×100/28
x=62×100
x=6200
So monthly income is 6200 rupees
Answer:
[tex]6200\ Rupees[/tex]
Step-by-step explanation:
[tex]We\ are\ given\ that,\\Percent\ of\ salary\ Marin\ spends\ for\ her\ loans=28 \% \\Amount\ of\ total\ payment\ on\ the\ loans= 1736\ rupees\\Hence,\\Let\ her\ monthly\ income\ be\ x\\Hence,\\The\ question\ also\ tells\ us\ that:\\28 \%\ of\ Marin's\ Monthly\ Income= Loan\ Payment\\Or,\\28 \%\ of\ x=1736\\Hence\ as\ 28 \%\ can\ also\ be\ represented\ as: \frac{28}{100},\\\frac{28}{100}*x=1736\\Hence\ by\ multiplying\ the\ LHS\ and\ RHS\ with\ \frac{100}{28},\\[/tex]
[tex]\frac{28}{100}*\frac{100}{28}*x=1736*\frac{100}{28}\\Hence,\\x=62*100\\x=6200\\[/tex]
Simplify: 3 + 2s - 4 + 3s
Answer:
-1 + 5s
Explanation:
3 - 4 = -1
2s + 3s = 5s
Answer:
5 − 1
Step-by-step explanation:
Using the elimination method and showing all of your steps. Solve the following System of Equations. Make sure to write your answer as an order pair.
`-3x-4y=2`
`3x+3y=-3`
Answer:
ummm......i need more details.
Step-by-step explanation:
What is the area of the rectangle 3cm 3cm
Answer:
18 square centimeters
Step-by-step explanation:
To find the area of a rectangle follow the formula, A=lw. Where A is the area, l is the length, and w is the width. So to find the area plug the dimensions into the formula. This would be A=6 x 3, which equals 18. Therefore the answer is 18 centimeters squared.
Answer:
9 cm
Step-by-step explanation:
Area is length x width
3 cm x 3 cm = 9 cm
But if you are doing the problem from the picture it is
A = 6 cm x 3 cm
= 18 cm
8. According to the scores on the last math test, 80% or 20. of the students in the class received an A. Find the number of students in the entire class.
Answer:
24
Step-by-step explanation:
20+20% is equal to 24.
(-2/10)^4 power
HELP MEE PLS
Answer:
1/625
Step-by-step explanation:
simply
(-1/5)^4
1/625
Answer:
The answer is 1/625
Step-by-step explanation:
hope this helps
One third of a number T is equal to 12???
Answer:
1/3×t=12
t=3×12
t=36
Step-by-step explanation:
need thanks for the answer.
The diagonals of rhombus ABCD intersect at E. Given that m∠CAD=20° and CE=4, find the m∠CDA.
Answer:
< CDA = 140 degrees
Step-by-step explanation:
For a rhombus, the sum of the interior angles is 360 degrees and also the opposite angles are equal i.e <ABC = <CDA and <BAD = <BCD
Given
<CAD = 20 degrees
<BCE = 20 degrees (based on geometry)
<BAD = <CAD + <BCE
<BAD = 20 + 20
<BAD = 40 degrees
Since <BAD = <BCD, then <BCD = 40 degrees
Get <CDA
<CDA + <ABC + <BAD + <BCD = 360
<CDA + <CDA + <BAD + <BCD = 360
2 < CDA + 40 + 40 = 360
2< CDA + 80 = 360
2< CDA = 360-80
2< CDA = 280
< CDA = 280/2
< CDA = 140 degrees
I need help I forgot how to this
AND THANK YOU
Answer:
x=-2
Step-by-step explanation:
same on both sides
plzzzzzzzzzzzzzzzzzzz help soon asap
Answer:
[tex]m=\frac{5}{4}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-10, -4)
Point (10, -29)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute [SF]: [tex]m=\frac{-29+4}{10+10}[/tex]Add: [tex]m=\frac{-25}{20}[/tex]Simplify: [tex]m=\frac{5}{4}[/tex]Answer: -1.25
Step-by-step explanation:
You can use a graph to help. Plot the points first, then draw a line through them. Then, count the points that rise, over the amount of points that run.
You can also do it the computational way without a graph.
Use this equation:
m = (y2 - y1) / (x2 -x1)
whats the answer giving brainliest
Answer:
A
Step-by-step explanation:
Answer:
c x-110
Step-by-step explanation:
if im wrong im so sorry
Write the numerical answer only. Do not include labels, dollar signs, or units.
A plane flew 720 miles in 6 hours. How many miles did the plane fly in 4 hours?
Answer:
480 miles
Step-by-step explanation: 4 times 120
Justin is considering two websites for downloading music. The costs are detailed here.
Website 1: a yearly fee of $30 and $1.50 for each download
Website 2: $2 for each download
What is a system of equations to represent the costs for one year?
Express your equations in the form of y=mx+b where x is the number of downloads for the year and y is the total cost for the year.
Enter your equations in the boxes.
Website 1:
Website 2:
Answer:
website 2 hope this helps
What is the height of the flagpole?
A. 18ft
B. 676ft
C. 324ft
D. 24ft
Answer:
C
Step-by-step explanation:
The height of flagpole is 24ft.
What is the Pythagoras theorem?The Pythagoras theorem states that the square of the longest side must be equal to the sum of the square of the other two sides in a right-angle triangle.
|AC|^2 = |AB|^2 + |BC|^2
Given;
Hypotenuse=26ft
Base=10ft
Now,
Hypotenuse^2=base^2+Height^2
26^2=10^2+h^2
676=100+h^2
576=h^2
h=24
Therefore, by Pythagoras theorem the height will be 24ft.
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10. A curve has the equation y = ax^3 + x + c, where a
and c are constants. The gradient of the curve at the
point (1, 2) is -2.
(i) Find the value of a and of c.
(ii) Hence, find the coordinates of the other point
on the curve where the gradient is -2.
Answer:
Part I)
[tex]a=-1\text{ and } c=2[/tex]
Giving the equation:
[tex]y=-x^3+x+2[/tex]
Part II)
(-1, 2)
Step-by-step explanation:
We have the equation:
[tex]y=ax^3+x+c[/tex]
Where a and c are constants.
We are given gradient/slope of the curve at the point (1, 2) is -2.
Part I)
We know that the gradient of the curve exactly at the point (1, 2) is -2.
So, we will differentiate our equation. We have:
[tex]\displaystyle y=ax^3+x+c[/tex]
Differentiate both sides with respect to x:
[tex]\displaystyle y^\prime=\frac{d}{dx}\big[ax^3+x+c\big][/tex]
Expand the right:
[tex]\displaystyle y^\prime=\frac{d}{dx}\big[ax^3]+\frac{d}{dx}\big[x\big]+\frac{d}{dx}\big[c\big][/tex]
Since a and c are simply constants, we can move them outside:
[tex]\displaystyle y^\prime=a\frac{d}{dx}\big[x^3]+\frac{d}{dx}\big[x\big]+c\frac{d}{dx}\big[1\big][/tex]
Differentiate. Note that the derivative of a constant is simply 0.
[tex]\displaystyle y^\prime=3ax^2+1[/tex]
We know that at the point (1, 2), the gradient/slope is -2.
Hence, when x is 1 and when y is 2, y’ is -2.
So (we don’t have a y so we can ignore it):
[tex]-2=3a(1)^2+1[/tex]
Solve for a. Simplify:
[tex]-2=3a+1[/tex]
Subtract 1 from both sides yield:
[tex]-3=3a[/tex]
So, it follows that:
[tex]a=-1[/tex]
Therefore, our derivative will be:
[tex]y=-3x^2+1[/tex]
Now, we can go back to our original equation:
[tex]y=ax^3+x+c[/tex]
Since we know that a is -1:
[tex]y=-x^3+x+c[/tex]
Recall that we know that a point on our curve is (1, 2).
So, when x is 1, y is 2. By substitution:
[tex]2=-(1)^3+1+c[/tex]
Solve for c. Simplify:
[tex]2=-1+1+c[/tex]
Then it follows that:
[tex]c=2[/tex]
Hence, our entire equation is:
[tex]y=-x^3+x+2[/tex]
Part II)
Our derivative is:
[tex]y^\prime=-3x^2+1[/tex]
If the gradient is -2, y’ is -2. Hence:
[tex]-2=-3x^2+1[/tex]
Solve for x. Subtracting 1 from both sides yields:
[tex]-3=-3x^2[/tex]
So:
[tex]x^2=1[/tex]
Then it follows that:
[tex]x=\pm1\\[/tex]
Since we already have the point (1, 2) where x is 1, our other point is where x is -1.
Using our equation:
[tex]y=-x^3+x+2[/tex]
We can see that our second point is:
[tex]y=-(-1)^3+(-1)+2[/tex]
Simplify:
[tex]y=1-1+2=2[/tex]
So, our second point where the gradient is -2 is at (-1, 2).
Twenty students from Sherman High School were accepted at Wallaby University. Of
those students, eight were offered military scholarships and 12 were not. Mr. Dory
believes Wallaby University may be accepting students with lower SAT scores if they
have a military scholarship. The newly accepted student SAT scores are shown here.
Military scholarship: 850, 925, 980, 1080, 1200, 1220, 1240, 1300
No military scholarship: 820, 850, 980, 1010, 1020, 1080, 1100, 1120, 1120, 1200,
1220, 1330
Part A: Do these data provide convincing evidence of a difference in SAT scores
between students with and without a military scholarship? Carry out an appropriate
test at the a = 0.05 significance level. (5 points)
Part B: Create and interpret a 95% confidence interval for the difference in SAT
scores between students with and without a military scholarship. (5 points) (10
points)
Answer:
Data provide convincing evidence of a difference in SAT scores between students with and without a military scholarship is explained below in details.
Step-by-step explanation:
This is a quiz of 2 autonomous groups. The population model differences are not understood. it is a two-tailed examination. Let w be the index for scores of students with army research and o be the index for scores of students without army research.
Therefore, the population means would be μw and μo.
The irregular variable is x w - xo = variation in the sample mean records of students with military accomplishments and students without.
For students with military accomplishments,
n = 8
Mean = (850 + 925 + 980 + 1080 + 1200 + 1220 + 1240 + 1300)/8
Mean = 1099.375
Standard deviation = √(summation(x - mean)/n
Summation(x - mean) = (850 - 1099.375)^2 + (925 - 1099.375)^2 + (980 - 1099.375)^2 + (1080 - 1099.375)^2 + (1200 - 1099.375)^2 + (1220 - 1099.375)^2 + (1240 - 1099.375)^2 + (1300 -1099.375)^2 = 191921.875
Standard deviation = √(191921.875/8 = 154.89
For students without military scholarship,
n = 12
Mean = (820 + 850 + 980 + 1010 + 1020 + 1080 + 1100 + 1120 + 1120 + 1200 + 1220 + 1330)/12
Mean = 1073.83
Summation(x - mean) = (820 - 1073.83)^2 + (850 - 1073.83)^2 + (980 - 1073.83)^2 + (1010 - 1073.83)^2 + (1020 - 1073.83)^2 + (1080 - 1073.83)^2 + (1100 - 1073.83)^2 + (1120 - 1073.83)^2 + (1120 - 1073.83)^2 + (1200 - 1073.83)^2 + (1220 - 1073.83)^2 + (1330 - 1073.83)^2 = 238199.4268
Standard deviation = √(238199.4268/12 = 140.89
We would set up the hypothesis.
The null hypothesis is
H0 : μw = μo H0 : μw - μo = 0
The alternative hypothesis is
Ha : μw ≠ μo Ha : μw - μo ≠ 0
Since sample standard deviation is recognized, we would analyis the examination statistic by using the t examination. The formula is
(xw - xo)/√(sw²/nw + so²/no)
From the information given,
xw = 1099.375
xo = 1073.83
sw = 154.89
so = 140.89
nw = 8
no = 12
t = (1099.375 - 1073.83)/√(154.89²/8 + 140.89²/12)
t = 0.37
The formula for determining the degree of freedom is
df = [sw²/nw + so²/no]²/(1/nw - 1)(sw²/nw)² + (1/no - 1)(so²/no)²
df = [154.89²/8 + 140.89²/12]²/(1/8 - 1)(154.89²/8)² + (1/12 - 1)(140.89²/12)² = 21650688.37/1533492.15
df = 14
We would get the probability count from the t test calculator. It becomes
p value = 0.72
Since the level of importance of 0.05 < the p value of 0.72, we would not neglect the null hypothesis.
Therefore, these data do not present an acceptable indication of a difference in SAT scores between students with and without a military scholarship.
Part B
The formula for getting the confidence interval for the difference of two population means is expressed as
z = (xw - xo) ± z ×√(sw²/nw + so²/no)
For a 95% confidence interval, the z score is 1.96
xw - xo = 1099.375 - 1073.83 = 25.55
z√(sw²/nw + so²/no) = 1.96 × √(154.89²/8 + 140.89²/12) = 1.96 × √2998.86 + 1654.17)
= 133.7
The confidence interval is
25.55 ± 133.7
what is 5.45 x 3.275?
Hurry I need help help
Step-by-step explanation:
C. This system is consistent. It has one solution.
particularly in algebra, a linear or nonlinear system of equations is called consistent
3/4 divided by 1/5
HELPPP
Answer:
3.75
Step-by-step explanation:
3/80 as a fraction maybe
3 3/4 as a mixed fraction
The short sldes of a rectangle are 2 Inches. The long sides of the same rectangle are three less than an unknown
number of Inches.
If the area of the rectangle is 22 square Inches, what is the value of the unknown number?
inches
Answer:
33
Step-by-step explanation:
The area is 22, and to find area you do l*w
so 22/2=11
so 11*3=33
your unknown number is 33
Christine needs to make a total of 40 deliveries this week. So far she has completed 14 of them . What percentage of her total deliveries has Christine completed?
Answer:
Christine has completed 35% of her total deliveries.
Step-by-step explanation:
To find the answer, you can use a rule of three considering that as Christine needs to make a total of 40 deliveries this week, this would represent 100% and with this you can find the percentage that the 14 deliveries completed represent:
40 → 100%
14 → x
x=(14*100)/40=35%
According to this, the answer is that Christine has completed 35% of her total deliveries.
. William fills 1/3 of a water bottle in 1/6 of a minute. How much time will it
take him to fill the bottle?
Answer:
1/2 minute
Step-by-step explanation:
We can use a ratio to solve
1/3 bottle 1 bottle
------------ = --------------
1/6 minute x minutes
Using cross products
1/3x = 1/6 *1
1/3 x = 1/6
Multiply each side by 3
3 * 1/3x = 3 * 1/6
x = 3/6
x = 1/2
1/2 minute
Answer:
30 seconds (1/2 minute)
Step-by-step explanation:
We are given that,
Amount of water filled in 1/6 minute = 1/3
Now, Let the time taken to fill the whole bottle with water be x
Hence,
Through the ratio method we get,
1/3:1/6 : : 1:x
Hence, we need to multiply the extremes and the means together and equalize them.
Hence,
x/3=1/6
x=(1/6)×3
x=(1/2) minute or 30 seconds
An isosceles triangle has an angle that measures 50° which other angles could be in that isosceles triangle
Answer:
50 and 80 or 65 and 65
Step-by-step explanation:
two angles in an isosceles are the same.
i need help quick!!!!! Ive been trying to figure this out for 20 mins now.
Whats one plus one?
A: 2
B:11
C:0
or D: not this one
Answer:
take one finger and than the other and how may fingers do you have now 2
Please help I will give brainliest!!
What is the unit rate for meters per second if a car travels 374 meters in 17 seconds?
Answer:
22 m/s
Step-by-step explanation:
We know the car travels 374 m in 17 seconds, so to find out how far it travels in 1 second, divide 374 m by 17 seconds:
unit rate in m/s = 374 m / 17 s = 22 m/s
Rick is buying a $115 tennis racquet from a sporting goods store. If the racquet is on sale for 35% off and sales tax is 8%, how much will he pay in total?
Answer:
$79.65
Step-by-step explanation:
115-40.25= 73.75
73.75 x 0.08 = 5.90
73.75 + 5.90 = 79.65
Rick will pay 80.73 dollar in total.
What is the fundamental principle of multiplication?Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
Given that Rick is buying a $115 tennis racquet from a sporting goods store.
If the racquet is on sale for 35% off and sales tax is 8%,then
First,we need to find 35% of 115.
35% as a decimal is 0.35
0.35 x 115 = 40.25
Now, subtract 40.25 from 115;
115 - 40.25 = 74.75
Now, the sales tax, find 8% of 74.75.
8% as a decimal is 0.08
0.08 x 74.75 = 5.98
Now, subtract add 5.98 to 74.75;
5.98 + 74.75 = 80.73
Therefore, he will pay 80.73 dollar in total.
Learn more about multiplications;
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Andre is trying to solve the equation 2x plus 6 equals 3x minus 8. The result of Andre’s first step was -x + 6 = -8. What was Andre’s first step?
Answer:
C. Subtracted 3x from each side.
Step-by-step explanation:
I'm not 100% sure that this is correct but it's the only one that makes sense in my brain. But I'm going to explain anyways.
2x + 6 = 3x - 8 (initial equation)
subtract 3x from 2x and it leaves you with -xsubtract 3x from 3x and it leaves you with 0 which is why there is no number there anymore.It could also be D. Subtract 6 from each side, which is why I'm confused. Hopefully this helps, sorry if it doesn't. But happy holidays! :))
50 points pls help quick
The map shows the migration of the ancient Hebrews prior to the Exodus.
A map titled Hebrew Migration. A key shows Location where Hebrews settled with a star and Path of Hebrew migration with a purple line. Stars are located near Canaan and the Nile Delta. A purple line begins at Ur, follows the Euphrates River northwest, and then moves south through Canaan into Egypt.
Which statement about the migration of the ancient Hebrew people does the map best support?
The ancient Hebrew people left Ur and went directly to Egypt.
The ancient Hebrew people settled along the Euphrates River.
The ancient Hebrew people migrated from Ur to Canaan and then to Egypt.
The ancient Hebrew people migrated from the Persian Gulf to the Red Sea.
Answer:
The ancient Hebrew people migrated from Ur to Cannan and then to Egypt
Answer:
The ancient here's people migrated from Ur to Canaan and then to Egypt.
Step-by-step explanation:
The stars show where they were migrating witch started from Ur and left.Then went to Canaan where the star is located;and finally Egypt which is where the final star is at.
