Ineed someone to explain these questions to me and how to find the answer i will seriously pay someone i have a final tomorrow and need

#21. 44 degrees #23. 30 degrees

Step-by-step explanation: The full triangle equals 180 degrees that's a fact. In #21 we have to find the value of x. To do so we add up all the phrases in the triangle and make the equal to 180, then you get x+-7 and you substitute -7 for x to get 44 degrees as your answer.

For #23 we see a linear pair with the angle that equals 130 degrees so we know the blank angle to the left will equal 50 degrees. the angle that equals 8x+4 is a vertical angle to the angle above so that angle also equals 8x+4 and knowing all the measures of the triangles we can add up the degrees to equal 180 degrees as we did in #21. we get that x=12 and we substitute 12 in for x in the phrase 3x-6 to get that the angle equals 30

answer: d. $20

step-by-step explanation:

just took the test

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17