We must find the area of each cake's top.
Formula for area of a circle:

where r is the radius.
<span>small cake:
</span>Plug in 4 for r because the radius is 4. (They give us the diameter, which is 8, and the radius is half that)

A = 16π
<span>big cake:
</span>Repeat the process:
Plug in 12 for r because the radius is 12. (They give us the diameter, which is 24, and the radius is half that)

A = 144π
So our two radii are 144π and 16π.
The large cake's top is not 3 times the area of the small cake's.
This makes sense because you are squaring the radius, which makes the fact that the larger cake's diameter is triple the smaller cake diameter irrelevant.
Hope this helped! ^-^
Answer:
Multiyply all 3 numbers to get your answer.
Step-by-step explanation:
4.5*2*2
C) I think you know the increasing line is the one with 3*x and the other one is -2*x, then the dotted line requires <, instead of <=, the rest I'm sure you can figure out.
Let me know if you need more explanation, but it's to make sure next time you answer someone, instead of asking! :)
Answer:
(2x-1)(x+5)
Step-by-step explanation:
Given the equation (2x² + 9x-5=0, we are to factorize it
2x² + 9x-5=0
2x² + 10x-x-5=0
2x(x+5)-1(x+5) = 0
(2x-1)(x+5)
Hence the factorized form of the equation is (2x-1)(x+5) = 0