Can someone help me with my homework for free it won’t let me put my question?
1 answer:
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Distributive property means that you have to multiply everything directly outside the parent hes to everything inside the parentheses. For this problem multiply 7 to the 9x and to the -9 like so:
7(9x) + 7(-9)
63x + (-63)
63x - 63
Look at image below if you are still confused
Hope this helped!
Answer:
Container will have less label area than container
by about
.
Step-by-step explanation:
A rectangular sheet of paper can be rolled into a cylinder. Conversely, the lateral surface of a cylinder can be unrolled into a rectangle- without changing the area of that surface.
Indeed, the width of that rectangle will be the same as the height of the cylinder. On the other hand, the length of that rectangle should be exactly equal to the circumference of the circles on the top and the bottom of the cylinder. In other words, if a cylinder has a height of and a radius of
at the top and the bottom, then its lateral surface can be unrolled into a rectangle of width
and length
.
Apply this reasoning to both cylinder and
:
For cylinder ,
while
. Therefore, when the lateral side of this cylinder is unrolled:
- The width of the rectangle will be
, while
- The length of the rectangle will be
.
That corresponds to a lateral surface area of .
For cylinder ,
while
. Similarly, when the lateral side of this cylinder is unrolled:
- The width of the rectangle will be
, while
- The length of the rectangle will be
.
That corresponds to a lateral surface area of .
Therefore, the lateral surface area of cylinder is smaller than that of cylinder
by
.