In a science experiment, the temperature of a substance is changed from 42 degrees Fahrenheit to - 54 at an average rate of-12 degrees Fahrenheit per hour. Over how many hours does the change take place

It costs a band $ 8 per T-shirt produced. At a small festival the band gives away 10 T-shirts, and sells others for $ 20 each.

Factor the trinomial 15a^2-22ab-5b^2

A) how many ways are there to choose 10 players to take the field? b. how many ways are there to assign the 10 positions by selecting players from the 13 people who show up? c. of the 13 people who show up, three are women.

You bought 5 pounds of hamburger meat, and you want to make quarter pounders (each weigh. 25 of a pound). How many quarter pounders can you make? Show your work and explain your reasoning. Katie's answer: To determine how many.

How do you find the product of 4x^2 (3x^2+1)

Jen solves the equation 100-1/2x=92 to determine the number of questions, x, she answered incorrectly on a test. She began by subtracting 100 from both sides, then multiplying both sides by - 2. Which best describes the accuracy of jen's work?

2x + y = 20 6x - 5 y = 12

What is the greatest common factor of 96 48 84

The perimeter of a rectangle is 100 yd. if its width is four times its length, what is the area?

Find the sum 45+46+47+48 ... + 127+128