Question

sat Calc section

I don't think there are questions as difficult as this one, but please help​

Answer 1

Answer: D

Explanation:

Area of triangle = $\frac{1}{2} bh$

• b = base length
• h = height

Area of ΔABC =

• $\frac{1}{2} CE * AB$

• $\frac{1}{2} BD * AC$

Since it's the same triangle, those two areas should equal each other:

$\frac{1}{2} CE*AB=\frac{1}{2} BD*AC\\\frac{1}{2} *9*8=\frac{1}{2} *7*AC\\\frac{1}{2} *72=\frac{7}{2} AC\\36*2=7AC\\AC=\frac{72}{7} =10\frac{2}{7}$

I hope this is correct