Explain with example of why 2^ (-8) * 2^ (-7) is equal to 2^ (-15)

Find the product of (3x + 7y) ^2

Joshua had $415.29. He got $175 for his birthday and spent $59.99 on a video game. How much money will he be able to deposit into the bank on his next visit?

What are the five rules of significant figures (for year 9) ?

A cookie jar contains 9 chocolate chip, 5 oatmeal, and 6 sugar cookies. What is the probability that a cookie selected at random will be a chocolate chip cookie? Group of answer choices

Use the numbers 2,3,5 and 8 to write an expression that has a value of - 1. You may use any operations, and you must use each of the numbers at lest once.

Lee's turtle has a shell that is 14.12 centimeters long. Ty's turtle has a shell that is 12.14 centimeters long. Which is the best estimate of the difference A. 1 Centimeter B. 2 Centimeters C. 4 Centimeters D. 6 Centimeters

Which equation is represented by the table? x y (x, y) 0 - 1 (0, - 1) 1 4 (1, 4) 2 9 (2, 9) A. y = 5x - 1 B. y = - 3x + 3 C. y = 3x - 4 D. y = 3x + 3

Which number produces a rational number when added to 0.25? A. Pie B. 0.54732871 ... C. 0.45 D. - √15

Which store is offering the best deal A. 8 for $6 B. 10 for $10 C. 2 for $3 D¢0.8 each And why

What is the table of values for 2x+3y=24