The 3 inside angles of a triangle equal 180.
Add the 3 angles together to equal 180:
X + (5x-20) + 4x = 180
Simplify the left side by adding like terms:
10x-20 = 180
Add 20 to each side:
10x = 200
Divide both sides by 10:
x = 20
Angle A = x = 20
Angle B = 4X = 4(20) = 80
Angle C = 5x-20 = 5(20) -20 = 100-20 = 80
Answer:
look below
Step-by-step explanation:
I'll go in order from top to bottom
Answer:
Part A: He can use distance formula. The formula is:
Part B: 41.63 (rounded to nearest hundredth)
Step-by-step explanation:
Plug this into the formula. First, subtract the numbers in the parentheses. Then, square them. Add those totals together. Lastly, take the square root using a calculator.
We can use the points (-4,-6) and (9,-6) to solve.
Slope formula: y2-y1/x2-x1
= -6-(-6)/9-(-4)
= 0/13
= 0
Hope This Helped! Good Luck!