If all the dimensions of a cube are multiplied by five, the surface area of the cube will change by a factor of ten. TrueFalse P
1 answer:
Answer:
False (see explanation)
Step-by-step explanation:
Let say that the edge length of a cube is x. The surface area is ,. Now if we take five times the x (5x) we get that the surface area is
. We see that indeed, the surface are changes not by a factor of ten but 5. But then again, if you really mean <em>factor</em> of 10. Then it will be True, as 10 is divisible by 5. There you need to decide for yourself :)
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Answer: Option 'd' is correct.
Step-by-step explanation:
Since we have given that
Margin of error = 0.5 years
Standard deviation = 5
At 90% confidence, z = 1.645
We need to find the minimum size of the sample they must take.
So,
Hence, Option 'd' is correct.
Answer:
The measure of each side of the cube is
<h2>15 inches</h2>Step-by-step explanation:
Since it's a cube all it's sides are equal
To find the length of each side we use the formula
Volume of a cube = l³
where l is the measure of one side
From the question
Volume = 3375 cubic inches
Substitute this value into the formula and solve for l
That's
<h3>Find the cube root of both sides
That's
<h3>We have the final answer as
<h3>l = 15 inches</h3>Hope this helps you