Answer:
x = 10
I used the Interior Angles of a Triangle Rule --The sum of all 3 interior angles in a triangle is always 180°.
(3x + 28) + (5x - 18) + 90° = 180°
Now i can get rid of the parentheses and combine like terms.
3x + 5x + 28 - 18 + 90 = 180
8x + 10 + 90 = 180
8x + 100 = 180
Then i subtract 100 from both sides to isolate x.
8x + 100 - 100 = 180 - 100
8x = 80
Then, i divide both sides by 8 to find x.
8x ÷ 8 = 80 ÷ 8
x = 10
Answer:
Step-by-step explanation:
42.6 divided by 0.07 is 608.571428
Regular division.
Answer:
−
2
−
6
+
8
Step-by-step explanation:
Yes; to figure this out just plug the x,y values into the equation and make sure they come out true
Answer:
.
Step-by-step explanation:
So the standard form of a circle is 
where (h,k) is the center and r is the radius.
You are given (h,k)=(1,4) and r=2.
So we are going to plug in 1 for h, 4 for k, and 2 for r:
.
