What is the slope of (0,-4) and (-5,2) ? And determine the equation of the line.

What is the sum of the digits of all 2-digit numbers from 10-99?

How can you tell that a number is rational?

What is 5/16 expressed as a percent? Enter your answer in the box.

Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 20 pounds of salt in 7.0 pints of water. Which scentist made a concentrated salt solution? Explain.

What's 1628 rounded to 3 significant figures

Factor the polynomial completely. x2 + 3x + 4

Round 4,279 to the nearest thousand

the 6:00 a. m. temperatures for four consecutive days in the town of Lincoln were - 12.1 C, - 7.8 C, - 14.3 C and - 7.2 C what was the average 6:00 a. m. temperatures for the four days

11x² + 2x + 16 2x² + x + 2 -

Find the measure of ∠D if ∠A = 5 2 x + 16 ∠B = 7 2 x + 20 ∠C = 3 2 x + 68 ∠D = 3 2 x + 40