Answer:
A = 156.25 pi cm^2
Step-by-step explanation:
The circumference of a circle is given by
C = 2 * pi *r
25 pi = 2 * pi *r
Divide each side by 2 pi
25 pi/2 pi = 2 pi r / 2 pi
12.5 = r
We can find the area by
A = pi r^2
A = pi ( 12.5) ^2
A = 156.25 pi cm^2
If the item is 30% off, the new price is 0.7p because we want to know how much 70% of the original price was.
Answer:
First one is 9 the second one is 3.75 and the last one is 8
Step-by-step explanation:
I just did it
Answer:
II and III are right
Step-by-step explanation:
The reason I is wrong is the zeros are (-2, 0) and (4, 0)
Answer:
17, 19, 21
Step-by-step explanation:
x = first number
x+2 = second number
x+4 = third number
4x + 3(x+2) + 2(x+4) = 167
simplify:
4x + 3x + 6 + 2x + 8 = 167
combine like terms:
9x + 14 = 167
subtract 14 from each side of the equation:
9x = 153
divide both sides by 9:
x = 17
