Alright,

you will need to solve for each variable to find if they got the equation correctly or not..

Let's start with h
isolate h
(1/2)h = A/(b1+b2)
Now we need to get rid of 1/2 we may do so by multiplying both sides by 2

h = 2(A/(b1+b2))

And that's not how they did it for h so Option D doesn't apply

Let's see C
Also doesn't apply since they multiplied 2 only by A rather than A/h

Let's see B
Also not correct they made the same mistake as with option C

Let's see A
again same mistake
when multiplying both sides by 2
the 2 should be as following
$2\frac{A}{h}$

I believe you should contact your instructor and explain that non of the options is right.

6 0

3 years ago

Also i wanna say thank you for helping me this school year you did a great job have a great summer​

Also i wanna say thank you for helping me this school year you did a great job have a great summer