Answer:
11 years old
Step-by-step explanation:
If four brothers have the average age 6, then the sum of their ages is
years.
Let x years be the age of sister. If four brothers and their sister have the average age 7, then
Multiply this equation by 5:
The sister is 11 years old.
The output is the cute of the input is written as y = x³.
I got -3.........................
-7 - 7p = 3p + 23
Move the -7p over to the right....by adding
-7 = 10p +23
Move the 23 over to the left by subtracting
-30 = 10p
divide by 10
p = -3
You divide then you square root the answer. once you get the answer you squate root again giving you 1.2
Answer:
B, because thats dividing, which equals 3. for the answer A, did you mean 15*5?
Step-by-step explanation: