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2 years ago

Which of the following is equivalent to (n-3)(n-5) a. n2-8n+15, b. n2+8n-15, c. n2-15n+8

1 answer:

5 0

Foil the binomials

First: n*n=n^2
Outer: n*-5=-5n
Inner: -3*n=-3n
Last: -3*-5=15

Put it together and simplify
n^2-5n-3n+15
n^2-8n+15

Final answer: A

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Answer:

4.6

Step-by-step explanation:

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Answer:

A. 14x14x28

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Step-by-step explanation:

The problem states that the box has square ends, so you can express volume with:

$v=x^{2} y$

Using the restriction stated in the problem to get another equation you can substitute in the one above:

$4x+y=84\\\\$

Substituting <em>y</em> whit this equation gives:

$v=x^{2} (84-4x)\\\\v=84x^{2} -4x^{3}$

Now find the limit of <em>x</em>:

$\frac{84x^{2}-4x^{3}}{dx}=168x-12x^{2}\\\\x=\frac{168}{12}=14$

Find the length:

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You can now calculate the maximum volume:

$v=(14)^{2}(28)= 5488$

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2 years ago

Taking color into account, does the shape have rotational symmetry? If so, what is the angle of rotation, rounded to the nearest

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Answer:
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2 years ago

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makvit [3.9K]

Answer:

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Step-by-step explanation:

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