Answer: B
Step-by-step explanation:
The area of a circle is pi*radius^2. But only a diameter is given, so in order to find the radius, you must divide the diameter by 2:
3.6/2 = 1.8
Now, you can plug the radius, 1.8, into the equation pi*radius^2 (
):
= about 10.18
Lastly, you must divide the area 10.18 by 2 because you are looking for only half the area.
10.18/2 = 5.09
Answer:
B
Step-by-step explanation:
Multiply through by x+5
2(x + 1) = x + 5 - 1 Combine like terms
2x + 2 = x + 4 Subtract 2 from both sides.
2x = x + 4 - 2
2x = x + 2 Subtract x from both sides.
2x - x = 2 Combine
x = 2
B
So 0.25 is essentially 25/100. Divide 25 from the top and bottom to get 1/4
Answer:
x = -4
Step-by-step explanation:
x/8 = -1/2
-1/2 = ?/8
2 * 4 = 8
-1 * 4 = -4
2 * 4 = 8
-1/2 = -4/8
x = -4
