supercool445 supercool445

14-10-2019
Mathematics

contestada

Find the measure of ∠A if

∠A = 3/2x + 20
∠B = 7/2x + 20
∠C = 5/2x + 40
∠D = 3/2x + 10

A) 55°
B) 65°
C) 76°
D) 104°

Respuesta :

amariahlusher amariahlusher

14-10-2019

Answer:

Step-by-step explanation:

(32x+20) + (72x+20) + (52x+40) + (32x+10)=180 \\ 32x+72x+52x+32x +20+20+40+10 =180 \\ 188x+90=180 \\ -90 \\ 188x=90 \\ /188 \\ x=0.478


then 52(0.478)+40 \\ 24.856+40=64.856


C=64.856

Answer Link

Otras preguntas

During the American occupation of Japan following World War II, the Japanese observed soldiers playing baseball and later adopted it as one of their favorite pa

y=3(2)^x what is the y intercept the x intercept and is the graph increasing or decreasing

Which sentence from the conclusion represents a summarizing statement? Select one: a. When all the vampires are iced, take a step back and look at your creation

The Welfare Reform Act of 1996 ended the concept of entitlements by requiring recipients of welfare to find work within two years of receiving assistance. How h

A discount given to encourage prompt payment is called: Multiple Choice A. a cash discount. B. a sales discount by the seller. C. a purchase discount by the buy

Inspired by Valentine's Day, Bob decides to travel to Buenos Aires, Argentina (in South America) so he can learn the tango. Should he pack his warm parka and Wh

What is the formula for the area of a hemisphere?

Which statement about education in the late nineteenth century is FALSE? It was a period of rapid expansion for public schools. Educational opportunities extend

Steve Hill, a 51-year-old salesman, is at his health clinic for an annual physical exam. After walking from the car to the clinic, he develops substernal pain.

The graph shows how many basketballs and how many whoopee cushions can be produced given a limited supply of resources. Such a graph is called a A) price graph