What has she done wrong?

What Has She Done Wrong?

Answers

Answer 1

Answer:

see explanation

Step-by-step explanation:

Her error is in squaring (2y)²

She has (2y)² = 2y²

when it should be 2y × 2y = 4y²

Then

(2y)² = 6² + 8²

4y² = 36 + 64

4y² = 100 ( divide both sides by 4 )

y² = 25 ( take square root of both sides )

y = [tex]\sqrt{25}[/tex] = 5


Related Questions

What is the slope of the function?
m=

What is the y-intercept of the function?
b=

Which equation represents the graph of the function?

Answers

slope of the function is 2x
y-intercept of the function is 1
the equation is f(x)=2x+1

There are 32 students in your class. After voting for the class representative, Alan received 3 times as many votes than David. How many votes did Alan receive?

Answers

Answer:

alan received 24 votes

Step-by-step explanation:

bark

Graph: y < 1/3x+1/2 plot this on a graph

Answers

it's was helpful to you dear ❤️❤️❤️

Answer:

Plot (0.5, 1.5) on the graph.

Which point is a solution to the inequality? (3, 1/2)

Step-by-step explanation:

use a point on the number line to represent a number ot whose absulute vaue is?

Answers

Answer:

A

Step-by-step explanation:

If ; gallon of paint covers ; of a wall, then how many
quarts of paint are needed for the entire wall?

Answers

Answer:

how many of a wall a galloon of paint cover?

Step-by-step explanation:

Help me on this I can’t fail

Answers

Answer:

c = green line

GEOMETRY QUESTION W PICTURE

Answers

Answer:

R

Step-by-step explanation:

E is congruent to R because of angle stuff



Which describes how to move from (2, 3) to (6,4) on a coordinate grid?


Answers

Step-by-step explanation:

x = +4

y = +1

it uses a rigid transition formation

8.2x + 9y + 2(2.5x) + 10xy

plz Help

Answers

Answer:

13.2x + 9x + 10xy

Step-by-step explanation:

=> 8.2x + 9y + 2(2.5x) + 10xy

=> 8.2x + 9y + 5x+ 10xy

=> 13.2x + 9y + 10xy

Since we can't simplify it from here, 13.2x + 9y + 10xy is our answer.

if x+y=5,and xy=10, find the value of x2+y2​

Answers

Answer:

Step-by-step explanation:

x+y=10-----(1)

xy=5------(2)

dividing (1) by(2)... we get!

x/y+ y/x=10/5

=>2

we have :[tex]x^{2} +y^{2} = x^{2} +y^{2} + 2xy -2xy = (x+y)^{2} -2xy = 5^{2} -2.10 =25-20=5[/tex]

ok done. Thank to me :>

How to turn improper fractions into mixed numbers.

Answers

Answer:

To convert an improper fraction to a mixed fraction, divide the numerator by the denominator, write down the quotient as the whole number and the remainder as the numerator on top of the same denominator. Let us see an example of this conversion

Step-by-step explanation:

Convert 23/4 into a mixed fraction

a lake has an area of 63800000000 square meters.

write this area in square kilometers, correct to 2 significant figures​

Answers

Answer:

64,000 (2 s.f)

Step-by-step explanation:

1 km is 1000 metres

so, 1 km² = 1000 x 1000 m²

i.e. 1 km² = 1,000,000 m²

=> 63,800,000,000/1,000,000 = 63,800

The second significant figure is 3 --> 3000

so, to the nearest 1000 we have 64,000 (2 s.f)

Hope it help and if it is correct please give brainliest

Thank You

which is bigger 11/18 or 5/14

Answers

Among the fractions given in this question 11/18 and 5/14,  the largest fraction is: 3/5.

Step-by-step explanation:

To find out which fraction is the largest, just divide the numerator by the denominator of the ratio and make the comparisons between them, thus defining which is the largest by decimal places or the largest number.

Resolution:

[tex]\large \sf \dfrac{11}{18} \rightarrow 11\div18\rightarrow 0{,}61111111111[/tex]

[tex]\large \sf \dfrac{5}{14} \rightarrow 5\div14\rightarrow 0{,}35714285714[/tex]

Conclusion:

We can conclude that the largest fraction, being between 11/18 and 5/14, is 11/18.

Anyone Please Help (for A Brainly )

Answers

Answer:

y < x + 1

Step-by-step explanation:

Put the answer in desmos graphing calculator

the answer is y ≤ x + 1

ok done. Thank to me :>

I need help with these. I have no idea how to find the answer for them. My teacher told me the first one was 136 but she didn’t explain how to find the answer or anything. Can someone please explain how you get the answers step by step & not just give them to me. Thank!

Answers

Answer:

136

55

53

70

Step-by-step explanation:

1) here x and 136 are alternate interior angles and they are equal

2) here x and 125 lie on the same straight line

so x  + 125 = 180

x = 55

3) here 53 and x are corresponding angles and they are equal

x = 53

4) for this see picture below

side angle to 110 becomes x because of corresponding angles

and as this x and 110 lie on same line

x + 110 = 180

x = 70

Answer:

A) If a line crosses 2 parallel lines, then each angle it forms with the first line is the same angle on the second line. And when 2 lines crosses, the opposite angles are the same.

B) x is 180° - 125° = 55°

C) x is 53° (If a line crosses 2 parallel lines, then each angle it forms with the first line is the same angle on the second line.)

D) x is 180° - 110° = 70°

Ryan made a $3000 down payment on a car. The total cost of the car was $7500. He made 36 equal monthly payments to pay the car in full. How much did Ryan pay per month?

Answers

Answer:

$125 per month

Step-by-step explanation:

A planee is flying at a speed of 250 miles per hour. How long does it take to fly 250 (show steps)

Answers

Answer:

1

Step-by-step explanation:

If the plane goes 250 per HOUR, then it will take that one hour to get to 250

Solve for s.



s
4
− 2
= 2


s =

Answers

Answer:

is 2

Step-by-step explanation:

is 2 why yes

PARALLEL PERPENDICULAR OR NEITHER OR SAME LINE

Answers

Answer:

1. Parallel

2. Neither

3. Perpendicular

4. Perpendicular

5. Neither

6. Same Line

7. Perpendicular

8. Parallel

9. Same Line

10. Perpendicular

11. Parallel

12. Perpendicular

13. Parallel

14. Same Line

15. Perpendicular

16. Parallel

17. Neither

18. Parallel

19. Parallel

20. Parallel

what could be the value of x in the equation x/2+ 15 =64

Answers

Answer:

x = 98

Step-by-step explanation:

[tex]\frac{x}{2}[/tex] + 15 = 64 ( subtract 15 from both sides )

[tex]\frac{x}{2}[/tex] = 49 ( multiply both sides by 2 to clear the fraction )

x = 98

which is a better buy six cans for $7 or 8 cans for $9?

Answers

Answer:

8 cans for 9$

Step-by-step explanation:

buy 8 cans for 9$

The 8 cans for $9 is better than six cans for $7.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We need to find better buy six cans for $7 or 8 cans for $9.

Let's find the unit rate of both the quantitites;

six cans for $7

Then one can = 7/6 = 1.16

Therefore, 8 cans for $9.

one can = 9/8 = 1.125

Hence, the  8 cans for $9 is better than six cans for $7.

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ2

Find the length of side x to the nearest tenth.
х
600
30°
17

Answers

Answer:

5.3

Step-by-step explanation:

Stare at the triangle for a bit. And try to add another one sharing the unmarked angle. You end up with an equilateral triangle. It means [tex]\sqrt7[/tex] is half the hypotenuse, At this point,

WILL GIVE BRAINLIEST!

Answers

Answer:

1 1/3

Step-by-step explanation:

it's bc the number is closer to one and not in the middle. have a great day

Answer:

The arrow is pointing to 1 1/3. From 1 to 2, there are 3 marks. These three marks are each 1/3. So, from 1 the next mark will be 1 1/3.

:)

Jan is looking for similar figures. Which choice is similar to the figure shown?

Answers

Bottom left as it's measurements and shape are the closest to the one Jan has

(X+9)(x-2)-9x-6 is equivalent to?

Answers

Answer:

[tex]x^{2}[/tex] - 2x - 24

Step-by-step explanation:

(x + 9)(x - 2) - 9x - 6

[tex]x^{2}[/tex] - 2x + 9x - 18 - 9x - 6          Multiply.

[tex]x^{2}[/tex] - 2x - 24                              Combine the like terms.

solve pls brainliest

Answers

1. None, it makes a cylinder

2. C

3. B

4. A

Solve for q.

14 = 3q + 8

q =

Answers

Answer:

q = 2

Step-by-step explanation:

Move all terms that don't contain q  to the right side and solve.

Answer:

q=2

Step-by-step explanation:

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y=-2x+5

Step-by-step explanation:

Use slope intercept form (y=mx+b) to plug in the values for m and b

What are the slope and the y-intercept of the linear function that is represented by the graph?

Answers

Answer:

Slope = -3/4

Y-intercept = (0, 3)

Step-by-step explanation:

Rise/Run

-3 Rise and 4 Run

Meets y-axis at y=3. x=0, so (0, 3).

Answer:

y intercept is 3 and the slope is -3/4

Step-by-step explanation:

the line hits the y axis at point 3, and the slope is the rise over run so it is down three and right 4 so -3/4

Help me someone please my teacher needs this soon or I’m going to fail school

Answers

Answer:

A. 9π/3 · 2

Step-by-step explanation:

Use the equation of circumference and substitute the value of radius:

C = 2πrC = 2π*3 = 6π inches

Compare the answer choices to find the correct one, which is:

9π/3 · 2 = 3π · 2 = 6π
Radius=3in

[tex]\\ \sf\longmapsto Circumference=2\pi r[/tex]

[tex]\\ \sf\longmapsto Circumference=2(3)(π)=6\pi[/tex]

Now

Check 1st option

[tex]\\ \sf\longmapsto \dfrac{9\pi}{3}.2=6\pi[/tex]

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