ssssssssssss30 ssssssssssss30
  • 24-08-2021
  • Mathematics
contestada

please guys someone help i need the answer

please guys someone help i need the answer class=

Respuesta :

maishasoha7
maishasoha7 maishasoha7
  • 24-08-2021

Step-by-step explanation:

2x + y + x+ 2y = 180

3x + 3y = 180

3y +20+2x+y=180

4y + 2x = 160

3x + 3y = 180

2x + 4y = 160

elimination

6x + 6y= 360

6x + 12y = 480

= 6y = 120

y= 20

substitute

3x + 3y = 180

3x + 3(20)= 180

3x + 60 = 180

3x = 120

x= 40

x+2y

40+2(20)=80

<4=<8= 80°

<7=180-<8=<180-80= 100°

angle 7 = 100°

angle 8 = 80°

Answer Link

Otras preguntas

Explain what the variable represent in an addition or subtraction expression.
Forty tickets are sold for a raffle with two prizes. You buy two tickets. What is the probability that you will win both prizes?
how do you write 3.04 as a mixed number?
Solve the linear system1).5x + 4y = 16 y = -16 2). 3x + 6y = 15 -2x + 3y = -3 3). 7y = -14x + 42 7y = 14 x + 14
Chickasaws and cherokees both succeeded in.............
3m(2m+9)=0 what is the factor of m
Compute without using a calculator. sin (9π/4)tan(7π/3)
Could the last carbon atom chain make bonds with four hydrogen atoms?why or why not?
what were some characteristics of Aryan culture ?
In the sentence You may have an apple or an orange but you can't have both . Where would the commas be ?