Answer:
=12
hope that helped you:)
please make my answer brainiest as im trying get 4 brainiest answers
Answer: 4
Step -by-step :
7+7+7=21
5+12+a=
17+a
21-17=4
Answer:
7 years
Step-by-step explanation:
Given that:
Let Richard's age = x
Elder sister's age = 2x
Youngwr sister's age = x - 2
Product of sisters ages = 70
2x * (x - 2) = 70
2x² - 4x = 70
2x² - 4x - 70 = 0
x² - 2x - 35 = 0
x² - 7x + 5x - 35 = 0
x(x - 7) +5(x - 7) = 0
(x - 7) or (x + 5) = 0
x = 7 or x = - 5
X can't be negative
Hence, x = 7
Richard is 7 years
Answer:
D) 59.66 m
Step-by-step explanation:
circumference = 19π = 59.66 m
