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

5x+2×+3-8+5x simplify

All of the following are good, healthy habits of someone looking to increase their fitness except...

Find Hypotenuse HELP

Scarecrow and the Tin Man are walking in a field toward Emerald City! When they start walking, Scarecrow is 25 meters away and Tin Man is 40 meters away. Scarec

3b.) Nora is buying a used car valued at $22,730. It is expected to depreciate an average of 9.5% each year. Predict the value of Nora's car in 6 years. Help ??

Solve the system of equations Y= -7x+3 Y= -x -3 What is X What is Y

I'm giving branliest if you just help me with this.

What is the slope of the line that passes through the points (1,−6) and (−8,9)?

Who wrote this letter???

Magnesium metal reacts with oxygen gas What is the initial appearance of Magnesium metal?