In δwxy, m∠w = (7x+8) , m∠x = (2x−15), and m∠y = (2x+0) . find m∠y.

  m∠Y = 34°

Step-by-step explanation:

We know what the sum of the angles is, so we can use that to write an equation that we can solve for x. Knowing x, we can find the measure of angle Y.

The sum of angle measures is 180°, so we have ...

  m∠W + m∠X + m∠Y = 180°

  (7x+8) +(2x -15) +(2x +0) = 180

  11x -7 = 180 . . . . . collect terms

  11x = 187 . . . . . . . add 7

  x = 17 . . . . . . . . . . divide by 11

The measure of ∠Y is ...

  m∠Y = 2x+0 = 2·17 = 34 . . . . . degrees

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)

the answer is 489

step-by-step explanation: