255/(7-4)^2-15 is 40/3 or 13 1/3 or 13.3333
Answer:
( x ÷ 4 ) - 3
Step-by-step explanation:
3 less than means minus 3 and the quotient of a number ( x ) and 4.
Answer
2x
Step-by-step explanation:
-14=20y-7x,10y+4=2x i think
Given:


To find:
The value of x and measure of angle A
Solution:
Alternate interior angle theorem:
If two parallel lines cut by a transversal, then the alternate interior angles are congruent.
⇒ m∠A = m∠B

Add 18° on both sides.


Subtract 3x from both sides.


Divide by 2 on both sides.
⇒ x = 30°
Substitute x = 30° in ∠A.
m∠A = 5x - 18°
= 5(30°) - 18°
= 150° - 18°
= 132°
The measure of ∠A is 132°.