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:
12, 72, 180
Step-by-step explanation:
A I am pretty sure. I apologize if I am incorrect.
Answer:
x = π(n - 
)
Step-by-step explanation:
Find attached Solution
Answer:
Ok, If you are trying to solve for x then your answer in fraction form is x=4/11. If you want it in decimal form the answer is 0.36(Repeats forever). And these answers are also implying that when you typed a "^" it meant multiplcation
Step-by-step explanation:
I have used an Online Algebra Calculator to help guide me to my answer and this answer is 100% correct so,
PLEASE MARK BRAINLIEST
