Answer:
The radius of the circle with the circumfrence we need to find is 15+3=18.
18*2pi=113.04
Answer:
6/5
Step-by-step explanation:
2/3 ÷ 5/9
2/3 × 9/5 ( while changing division to multiple, numerator and denominator changes
2 × 3/5 ( 9/3 =3
Ans =6/5
Answer:
$3.17
Step-by-step explanation:
Take the $12.69 and divide it by the 4 kilograms and you get 3.17. (This is rounded)
Answer:
$43.20
Step-by-step explanation:
To find the original purchase price, write a proportion and solve. A proportion is an equation where two ratios are set equal.
If the discount if 15% then you pay 85%.

To solve for y, cross multiply the numerator and denominator of each fraction.
36.72(100) = 85y
3672= 85y
43.2 = y