Is negative square root of 4 a rational number

The diameter of a ball was measured with a degree of accuracy to the nearest 1cm; the diameter equaled 20 cm. What is the largest possible volume of the ball (V = 4 3 πr3) to the nearest cm3? A) 2255 cm3 B) 4511 cm3 C) 18043 cm3 D) 36087 cm3

What is the value of y so that the ordered pair (2, y) is a solution to the equation 2x + y = - 2? A. - 6 B. - 2 C. - 1/2 D. 0

Find area of a rectangle whose vertices are - 6,10 - 6,6 2,10 and 2,6

One craft stick is 5 centimeters long and the other is 8 centimeters long. which of the following cannot be the length of the craft stick that she will use for the third side of the triangle? * 4 ... * 9 ... * 12 ... * 14

2 = 5p - 7/4 What is the value of p?

16 years from now, Pia's age will be twice her age 12 years ago. Find her present age by using an equation.

22n=418 what is the vaule of n.

Find x so that a is parallel to b. 3_21

What does double brackets mean in calculus?

How do I simplify (3²) - ³