4. The SR-71 Blackbird" is one of the world's fastest airplanes. It is capable of traveling at a cruising speed of Mach 3, or three times the speed of sound. The speed of sound is approximately
7.6 x 10 miles per hour. What is Mach 3 in miles per hour? Write your answer in scientific
notation

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation: