Use substitution to solve the system of equations.

y = - 2x

x - 3y = 21

A) (3, - 6)

B) (3, 4)

C) (-2, - 6)

D) (-6, 12)

What remains when 50 p is divided by 8

An ostrich egg has about the same volume of a sphere with a diameter of 5in. If the eggshell is about 1/12 in thick, find the volume of just the shell, not including the interior of the egg. Round your answer to the nearest tenth and use 3.14 for pi.

Mrs. Duncan measured the lengths of a crayon and a pencil. The pencil is twice as long as the crayon. The sum of their lengths is 24 cm. What are their lengths?

Listed below are the overhead widths (in cm) of seals measured from photographs and the weights (in kg) of the seals.

Simplify (w/6) ^-2 A. w^2/36 B. 1/36w^2 C. 36/w^2 D. 36w^2

What is the slope of the line represented by the equation @ = - 42 Slope

The owner of two restaurants asked you to determine whether the variances of the number of customers differ in two locations You collect daily data about the total number of customers in both restaurants.

When you combine like terms from both sides, what is the result? (A) - 3 = 3x (B) 3 = 3x

What is 4/8 and 3/7 close to 0 1/2 or 1

Employees at an office were surveyed about what types of hot beverages they drank that day. It was found that 50% of them drank coffee and 25% drank tea. The survey showed that 10% of the employees drank both coffee and tea.