Question

Where did I make a mistake in this problem?

Answer 1

*waits calmly and collectively to view this problem*.

Answer 2

The equation for the area of a trapezoid is A=1/2(^b1+^b2)h, where A represents the area, b1 and b2 represent the length of the bases, and h represents the height of the trapezoid.

I'm trying to find the height of several trapezoids, and I need to isolate the h variable in the formula.

My work is outlined below:

A=1/2(b1+b2)h

Step A: 2A=2(b1+b2)h

Step B: 2A/2(b1+b2)=h

Step C: A/b1+b2=h

What mistake, if any, did I make? My friend texted me saying it was wrong and now won't reply, and I don't want to submit it if it is.

Answer 3

sorry for taking forever to type it out btw

Answer 4

???

Answer 5

I personally forgot how to do this because my brain is currently fried because of this economics test. Let me plug it into a calculator and see what I get.

Answer 6

after multiplying both side by 2 the 1/2 cancels with the two so that's where u need to check

Answer 7

2A=(b1+b2)h

Answer 8

follow from there

Answer 9

wait so i shouldn't have multiplied both sides?

Answer 10

\[A = \frac{ 1 }{ 2 }(b_{1}+b_{2})h\]
this is how the equation should be right?

Answer 11

Yes

Answer 12

both side by 2 will eliminate the 1/2 on the other side leaving a factor of 1

Answer 13

\[2A = (b _{1}+b _{2})h\]

Answer 14

that's what i was trying to type

Answer 15

I couldn't figure out how to make the b's go up though lol

Answer 16

\[\frac{ 2A }{ (b _{1}+b _{2}) }=h\]

Answer 17

so is that the correct answer then?

Answer 18

it should be according to the first equation i typed which you said was properly written

Answer 19

do you mind using the drawing tool to write equation as you have it?

Answer 20

\[A = \frac{ 1 }{ 2(b_{1} +b_{2})h}\]

Answer 21

is this your equation or the one i asked you previously?

Answer 22

trapezoid should be \[A = \frac{ a+b }{ 2 }h\]

Answer 23

which is the same as the one i originally asked you about, so yeah the answer is correct