The difference of two numbers. (a, b) is 21. The difference of 5 times a and 2 times b is 18. What are the values of a, b?

Add the following rational expression k^3/k+5 + (7k^3) / k+5 = A.) 8k^3+3/k+5 B.) 23k^3+7/3k+10 C.) 6 (3k+1) / 3k+4 D.) 20k^3+1/k+8

Which equation is representative of "3 less than a number is 6"? A. x-6=3 B. x-3=6 C. x+3=-6 D. 3-x=-6

a rare coin was bought for $30.00 2 years ago. It is now worth $75.00. What is the percent increase in worth?

Dion practiced the long jump. He jumped 3.05 meters, 2.74 meters and 3.3 meters. What was the average length of Dion's jumps?

When collecting data from real-world problems, it is always best to represent the data in a pie chart. True or false

Wake up cereal comes in 2 types, crispy and crunchy. If researcher has 10 boxes of each, how many ways can this be done?

Which city is cooler, Mobile (3°F) or Memphis (9°F) ?

A composite figure has three congruent triangles removed from it. A square and a rectangle. The square is 8 feet by 8 feet, and the rectangle is 16 feet by 8 feet. 3 triangles are cut out of the figure.

A diderenca do carro azul 1/2e so verde 1/4

A box is tossed upward from a cliff that is 15 meters high, at a speed of 4 meters per second. The height of the box is given in meters by h (t) = -4.9t^2+4t+15 where t is seconds. What is the height of the box at 1 second?