Question

Plz help meeeeeeee!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

b1 = 3

Explanation:

Substitute the known measure into the area formula:

60 =
`(1)/(2)`(8)(b1 + 12)

60 = 4(b1 + 12)

/4 /4

15 = b1 + 12

-12 -12

3 = b1

b1 = 3

Now substitute b1 for 3 in the formula

60 =
`(1)/(2)`(8)(3 + 12)

60 = 4(15)

60 = 60, which is correct

So the answer is b1 = 3

Hope this helps :)