Find the area of a circle whose circumference is 87 m.
A 47 m2
B. 87 m2
C. 167 m2
D. 647 m2

Clara solved the equation 7/3x = −2/3 as shown → 7/3x( 3/7 ) = −2/3 ( 3/7 ) x = −14 what is clara’s error?

Is a positive integer raised to a negative power always positive

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?