You have to think about what y and x can be equal to for you to get 12. (Hint: y is going to be a bigger number than x)
Ex: 3y-5x=5
Think: 3 x 10(y) - 5 x 5(x)= 5
So, y would be 10 and x would be 5.
Answer: x = 6
Step-by-step explanation:
First step is to distribute the 5(x + 2).
5x + 10 = 6x + 3x - 14
The 6x and the 3x on the right can be combined.
5x + 10 = 9x - 14
Now add 14 to both sides to isolate the 9x.
5x + 24 = 9x
Subtract 5x from both sides.
24 = 4x
Divide by 4 to get x by itself.
6 = x
Answer:
55 m²
Step-by-step explanation:
The arc length of a half-circle is πr, so the area of the curved surface is ...
A = πrl = π(2.5 m)(7 m) = 17.5π m² ≈ 55 m²
