Find the area of equilateral triangle of side 4 cm.

Write a linear function f with f (5) = - 1 and f (0) = - 5.

C. f (x) = 2x (x - 6) (4x - 3) / (2x + 1) (x - 7)

What value should be added to make a perfect square? x^2+16x a. 4 b. 8 c. 16 d. 64

Let vectors A = (2,1,-4), B = (-3,0,1), and C = (-1,-1,2) What is the angle θAB between vector A and B?

A mountain road rises 10 feet for a 175-foot run. What is its slope?

A scientist is measuring the temperature change and a chemical compound the temperature dropped 11 Fahrenheit per hour from the original temperature after four hours the temperature was 90°F find the compounds original temperature

Concrete can be purchased by the cubic yard. How much will it cost to pour a slab that is 17 ft by 17 ft by 2 ft if the concrete costs $40.00 per cubic yard?

A county government says that a safe level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.

I have no idea about this! You need to simplify this:

2x+4y+2z = - 8 5y-2z = 0 4z = - 20