When a number is decreased by 43%, the result is 20. What is the original number

Started at 0 degrees and rose 2 degrees each minute

Graph each line y=-3x+4

Steve, Mark, Melissa, Joe, and Mary are in a group. They randomly line up at the door. What is the probability that the first person in the line is a girl?

7 A triangle is right-angled if the sides are a = m2 - n2, b = 2mn and c = m2 + n2 where m and n are positive integers, and m > n. Show that this is true by substituting into the equation c2 = a2 + b2.

You have $6,500 to deposit. If you deposit the money in a savings account at your local bank, you will earn 1.45% annual interest and will be able to make ATM withdrawals at your bank's ATMs.

How do you factor numbers ex. 9t-27

What is the solution to the system of equations? y = - 5x + 3 y = 1

4r+3=r+21 How do I do this?

The half life of caffeine in a healthy adult is 5.7 hours. Jeremiah drinks 16 ounces of caffeinated coffee in the morning. How long will it take for only 40% of the caffeine to remain in his body?

Start with the equation 0⋅2=0 to explain why - 4⋅2 must equal - 8. Drag descriptions and equations to the table to complete the explanation.