There are 4/7 boys, so there are 3/7 girls.
Let the total number of children be x.
4/7x = 8
1/7x = 8 ÷ 4
1/7x = 2
3/7x = 2 x 3
3/7x = 6
There are 6 girls.
2. Definition of supplementary angles
I’m not too good with proofs but hopefully at least one answer helped lol sorry
Answer:
2x+30
Step-by-step explanation:
The perimeter of a rectangle is
P = 2(l+w)
The length is 2/3 x+10 and the width is 1/3x +5
P = 2(2/3x +10 + 1/3x +5)
Combine like terms
P = 2(2/3x + 1/3x +10+5)
= 2(x +15)
Distribute the 2
= 2x+30
Answer: 12 1/2 years
Step-by-step explanation:
If the salary doubling in currency, it would need a 100% raise. Simply divide 100% by 8% to get the number of years needed.
100 / 8 = 12.5 or 12 1/2
8% of 25,000 = 2,000
25,000 / 2,000 = 12.5 or 12 1/2