Solving each system by elimination

-9x+y=11

-8x-y=6

Which value of x will satisfy the inequality x + 7 < 15? A. 7 B. 8 C. 9 D. 10

Factor 5xz+10yz completely

Write the equation 2y - 4x = 5 in the form y = mx + b

The price of a smart watch is $109.99 and the sales tax is 6.5%. What is the total cost of the smart watch? Enter your answer in the box

This is a shorthand way of writing very large or very small numbers, in which a number is expressed as a number between 1 and 10, times 10 raised to an exponent.

What is a negative plus a negative

I just completed 12 questions on a test the progress bar shows 20% is complete how many total questions are on the test?

A parabola, with its vertex at the origin, has a directrix at y = 3. Which statements about the parabola are true? Check all that apply. The focus is located at (0,-3). The parabola opens to the left. The p value can be determined by computing 4 (3).

True or false? in order to circumscribe a circle about a triangle, the circle's center must be placed at the incenter of the triangle.

If the diameter of a circle is half of a yard then its radius is how many inches?