The friends will hike through sections trail during 3 summers, over a total of 9 months. they wanted to cover about the same distance each month. reaserch the length of the trail in miles. use compatible numbers to estimate the numbers each month

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)