Answer:
10
Step-by-step explanation:
Let c = sum of ages of all children.
mean age of all children = c/15 = 7
c = 15 * 7 = 105
The sum of the ages of all children is 105.
Let b = sum of ages of the 9 boys.
mean age of boys = b/9 = 5
b = 9 * 5 = 45
The sum of the ages of the boys is 45.
The sum of the ages of the girls is c - b.
c - b = 105 - 45 = 60
The number of girls is 15 - 9 = 6
mean age of girls = (sum of ages of the girls)/(number of girls) =
= 60/6 = 10
2x+7=?
X=6
2(6)+7=
12+7=19
In six years, the tree will be 19ft
2x+7=44
Minus seven on both sides
2x=37
Divide two from both sides
X=18.5
Thus, it will take 18 and a half years for the tree to reach 44ft
Answer:
A. winning games with his new racket
Step-by-step explanation: It's A because he's going to spend the money anyways every kid can't hope but, to spend their money $100 is a lot. He wouldn't be worried about losing out on savings because you get birthday money every year there is always a Opportunity for more cash.
If I'm wrong please let me know that means it was (B.) Spending the cash..
Semi-monthly means twice every month, typically either on the 1st and 15th,
or on the 15th and last.
Months don't line up with weeks in any regular way. Depending on the
company, if they say "bi-monthly", they may pay 24 times a year, or else
26 times a year.
If they pay every 2 weeks, the semi-monthly is $2400.
