Just have 2 questions again to be answered. i will mark you and will spare 50 points for good answers < 3

71

Step-by-step explanation:

The given triangle is an isosceles triangle so the base angles are congruent (equal).  So, the angles are x + x + 38. Since the sum of the angles of a triangle equal 180°, we can set up an equation to solve for x:

x + x + 38 = 180

2x + 38 = 180

      -38   -38

2x         = 142

÷2           ÷2

x          =  71

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x = 90 , y = 43

Step-by-step explanation:

The large triangle is an isosceles triangle so the base angles are congruent (equal).  So, the angles are 47 + 47 + ∠A. Since the sum of the angles of a triangle equal 180°, we can set up an equation to solve for x:

47 + 47 + ∠A = 180

    94   +  ∠A = 180

               ∠A  = 86

Since ∠A is bisected by segment AD, then y = (86) = 43

ABD is a triangle with angles y , x, and 47.  Their sum equals 180°:

43 + x + 47 = 180

        x + 90 = 180

               x = 90

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)

step-by-step explanation:

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