Jane had $7 and her sister had $2. their parents gave each of them an equal amount of money . then, jane had twice as much money as her sister, how much money did their parents give each of them?been stuck for like an

They each got $3.00

Step-by-step explanation:

7+x = 2(2+x)

7+x = 4 + 2x

-x = -3

x=3

Let's use "x" as the equal amount of money.

Jane now has 7+x dollars

Her sister had 2+x dollars

Since Jane has twice the amount of her sister's money, her sister's money now becomes 2(2+x), or 2 times 2+x

Now just solve for x.

7+x = 2(2+x)

Distribute the 2 to 2+x

7+x = 4 + 2x

Subtract x from both sides

7 = 4 + x

Subtract 4 from both sides

3 = x

Their parents gave them $3.

If you want to check your work, just plug in 3 as x for their equations.

Jane: 7 + 3 = 10

Jane's sister: 2 + 3 = 5

10 is in fact twice of 5.

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl