Answer:
12
Step-by-step explanation:
2/3 x + x = 20
2/3 x + 3/3x = 20
5/3 x = 20 ... times 3/5 both sides
x = 12
check: 2/3 x 12 + 12 = 8 + 12 = 20
Answer:
=-5ab
Step-by-step explanation:
Rewrite: -15 as 3*5
Rewrite: -5 *2*2 as 1*5
Rewrite: 10 *3 as 6*5
=6* 5ab +4 *5ab +3ab
Factor out common term 5ab
=5ab(6-4-3)
=-5ab
Hi Fareed134,
If you want to find the other lengths of the sides, all you have to do is take the side you know (10) and subtract it from 28. Then, divide it in half to get 2 longer sides, and divide 10 in half to get the 2 shorter sides.
28-10=18
18/2=9
10/2=5
the lengths of the other sides are 9,9,5 and 5.
Hope this helps! :)
D. What must be true is the correct answer