Question

Find the value of x, which makes the area of this triangle equal 72.

Answer 1

triangle?

Answer 2

Whoops I mean use Area =1/2 (base x height)

Answer 3

no @study100 , it would be 72 = 1/2 (8 *(2x+3) )

Answer 4

Yes ! :D

Answer 5

so 72 = 1/2 ( 16x+24)
so 72 = 8x +12
now move 12 to the other side :
72-12 = 8x
60 = 8x
x =15/2 =7.5

Answer 6

15/2?

Answer 7

15/2 = 7.5

Answer 8

thank you guys so much.

Answer 9

a. x=9.375
b. x=10.5
c. x=4.6875
d. x=6
those are the answers i have to choose from?

Answer 10

oh wait! 2x-3!!!! we were both doing 2x+3

Answer 11

one second let me fix it

Answer 12

LOL
72 = 1/2 (2x-3)(8)
72= 4(2x-3)
18= 2x-3
21=2x
x= 21/2 = 10.5

Answer 13

72 = 1/2*8* (2x-3)
72 = 1/2*16x-24
72 = 8x-12
84=8x
x = 10.5

Answer 14

thats what i just got .
thank yall .

Answer 15

NP xD

Answer 16

you're welcome XD @study100 , i feel stupid XD

Answer 17

same xDD
I think I started that first o.o

Answer 18

but hey it's funny, had a good laugh with you @Purplerainbowcherry

Answer 19

hahahaha yup, that was pretty funny XD @study100

Answer 20

Triangles confuse me so darn much xD and paralleagrams .i suck at geometry.