The diameter of a circle is 18 cm. Find the circumference to the nearest tenth to the nearest tenth.

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Indicate the formula for the following conditions: p^c(n,r)=

The graph represents f(x)=[x]+3. what is f(-2.2)?