Answer:
9 years old.
Step-by-step explanation:
Since the ages of all of these students are being represented in relation to the middle student's age then we can create formulas for each student and then apply them to the formula for the sum of their ages and solve for the middle child's age (M) like so... (oldest child's age is represented by variable O and youngest child's age is represented by variable Y)
O = M + 6
Y = M - 3
30 = (M+6) + M + (M-3) ... combine like terms
30 = 3M + 3 ... subtract 3 from both sides
27 = 3M ... divide both sides by 3
9 = M
Now we know that the middle child is 9 years old.
Answer:
here is the answer
Step-by-step explanation:
hope it is helpful
I’m guessing you mean he saves 15%?
He saves $975
Spends: $5525
Answer:
true
Step-by-step explanation:
a prime number is an odd number.
If you add 1 to an odd number, it will become an even number, then it is divisible by 2.
