Answer:
It is B 40.
Step-by-step explanation:
60+x+2x=180
120=3x
x=40
Answer:
Step-by-step explanation:
(1) 
First, let's expand the expression:
Next, let's factor the quadratic:
Finally, set the equation equal to 
to find the solutions
(2) During the step 
, when you take the square root of both sides, you have two equations, rather than one:
and 
, so the solutions should be 
(3)
Add 
to both sides
Multiply both sides by 
Take the square root of both sides
±
Subtract 
from both sides
I think it’s 10 because if you add 7 and 3 you get ten then you subtract i dont really know
Answer:
1/ x = 22.5°
2/ x = 60°
Step-by-step explanation:
1/ We have: 3x + 2x + 3x = 180°
=> 8x = 180° => x = 22.5°
2/ We have: x + x + x = 3x = 180°
=> x = 60°
Answer:
fourth option
Step-by-step explanation:
Given
= 
( cross- multiply )
y(w + 2) = 2z(2x - 1) = 4xz - 2z ( divide both sides by y )
w + 2 = 
( subtract 2 from both sides )
w = - 2
