Solve the following system of equation. express your answer as an ordered pair in the format with no space between the number or symbols

2x+7y=-7

-4x-3y=-19

A mixture contains 40oz of glycol and water, and it is 10% glycol. The mixture is to be strengthened to 25% by adding glycol. How much glycol is in the original mixture?

Convert the angle 4 radians to degrees, rounding to the nearest 10th.

If - 3 (x+2) = 15 what is the value of 2x-1

Solve the proportion for t 15:75=30:t

Josh is trying to factor the expression - 20a - 8 - 12b. He writes - 4 (5a + 2 + 3b). What error did Josh likely make?

Drivers ed you are required to park 12 inches of

Is it true true that two segments that have the same length must be congruent

The diameter of a sphere is 4 centimeters. Which represents the volume of the sphere? 이 me O 81 cm O 64 cm O 167 cm

Kesha sharpened 4 colors of pencils for her teacher. She sharpened equal amounts of red and green pencils. Then she sharpened twice as many blue and yellow pencils in equal amounts. How many of the 42 pencils were yellow?

Hello so i'm so confused! Fill in the missing numbers in the calucations below: It might be the website, but I'm to confused 263 + ___ = 1011 405 + ___ = 653