Answer:
a
Step-by-step explanation:
Answer: 22.5 degrees
Step-by-step explanation:
The sum of the angles of a triangle is 180 degrees.
So we can set up an equation to solve for x.
x + 45 + 5x = 180.
Combine like terms of x:
6x + 45 = 180
Subtract 45 from both sides:
6x = 135
Divide both sides by 6:
x = 22.5 degrees
-5x - 7 < 28.....add 7 to both sides
-5x < 35....divide both sides by -5, change the inequality sign (u change the inequality sign when dividing/multiplying by a negative number)
x > -7
You will at 7 to both sides and then divide 2 on both sides to find x. :)
2x-7=3
+7=+7
—————
2x = 10
— —-
2 2
X = 5
