The midpoint of AB is M(2, 0) . If the coordinates of A are (7, - 2) what are the coordinates of B?

B = ( -3 , 2)

Step-by-step explanation:

You would use a mid point formular because you are trying to find the middle of a line . The midpoint formular is (X1 + X2 , Y1 + Y2 )  

                                                                 /2            /2

From the information given A is (7 , -2 )

If you fill it in it would be 7 + X , -2 + X

                                         /2         /2           =   (2 , 0 )

The only posible solution would be 7- 3 /2  , -2 + 2 / 2

Makeing B (-3, 2).

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls