Eliminate the parameter, t, in the parametric equations, x = 2cost and y = 4sint.

x2 + y2 = 4

x2 + y2 = 16

4x2 + y2 = 16

x2 + 2y2 = 16

Select the equation that most accurately depicts the word problem. Two sides of a triangle are equal in length and double the length of the shortest side. The perimeter of the triangle is 36 inches.

The width of a telescope lens is measured to be 3 cm, but the actual size of the lens is 3.1 cm. What is the percent error in the measurement? 0.3% 0.31% 3.3% 31%

What is the answer to - 6=b/18

Gabriela's monthly take-home pay is $2800, and her monthly rent is $700. If both her monthly take-home pay and her rent increase by $210, what percentage of Gabriela's take-home pay will be used to pay rent?

How do I show my work for this statistics problem? There are 5 boys 3 girls in a class and 4 boys and 2 girls in another. Are the boys in the second class or girls in first class more likely to be randomly selected?

Why do you suppose the United States still uses the English System for everyday measurements, while almost every other country uses Sl? Give several possible reasons

Solve the system of equations by graphing. x+y=3, y=2x-15

If you work for an hourly wage, your gross pay is a function of the number of hours that you work. Your hourly wage is $8.50 per hour. Let n represent the number of hours worked and f (n) represent the gross pay.

What is (4*3) + (2*3) = (6*3) =

What is the value of the expression shown when x = - 4? 6 + 3 (x - 5) - (x + 3) A. -9 B. 4 C. 2 D. -20