La figura 3.12 Cuantos angulos obtusos internos hay ?

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Lucy spent $165 in december using a new credit card. in january, she began paying between $15 and $25 each month towards her account balance.

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.