Question

can someone please help, don't use this for points pls :/
(I'll give brainly)

Answer 1

Answer:

x = 3

AB = 18

Step-by-step explanation:

Based on the midsegment theorem:

$MN = \frac{1}{2}(AB)$

MN = 9

AB = x + 15

Plug in the values and solve for x

$9 = \frac{1}{2}(x + 15)$

Multiply both sides by 2

$9 \times 2 = \frac{1}{2}(x + 15) \times 2$

$18 = x + 15$

Subtract 15 from each side

$18 - 15 = x + 15 - 15$

$3 = x$

x = 3

AB = x + 15

Plug in the value of x

AB = 3 + 15

AB = 18