-4(-6 - 2n) = 30 + 8n

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

What is the absolute value of the complex number -4-sqrt2i

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?