Answer:
-6.07
Step-by-step explanation:
Add 21/2 + 31/5 + 11/3 = 20 11/30
Answer:
x=4/7
Step-by-step explanation:
Change mixed fractions to improper fractions
2 1/4 = 9/4
1 2/7 =9/7
Therefore, we have
9/4=9/7÷x
9/7÷x is 9/7×1/x=9/7x
Then, we have
9/4=9/7x
Cross multipy
9×7x=9×4
63x=36
Make x the subject of the formula, we have
x=36/63
x=4/7
Answer:
it will cost 130
Step-by-step explanation:
10x7=70 12x5=60 60+70=130
TRiangles ABE and ACD are similar because BE and CD are parallel.
Therefore CD / BE = AD / AE
8 / BE = 16 / 10
BE = 8*10 / 16 = 5
Also, 16 / 10 = AC / AB = 20 / AB
AB = 10 * 20 / 16 = 12,5
Perimeter of ABE = 5 + 10 + 12.5
= 27.5 units (answer)
