Help please and help me understand how to solve

Step-by-step explanation:

You have a right triangle here.  The way to solve for a missing side in a right triangle is to use Pythagorean's Theorem.  You can't use right triangle trig because you don't have an angle. Pythagorean's Theorem is, in this case,

and

and

so

which simplifies down to

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)