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3 years ago

Given the function below, find f(7) f(x)=-x^2+9x

Mathematics

1 answer:

sashaice [31]3 years ago

3 0

Answer:

f(x) = 7

-7^2 + 9(7)= -49 + 63 = 14

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A sequence of transformations was applied to an equilateral triangle in a coordinate plane. The transformations used were rotati

Svetlanka [38]

Answer:

A- It must be an equilateral triangle with the same side lengths as the original triangle

Step-by-step explanation:

Well The Equilateral Triangle dont change at all But its position on the coordinate plane changes, So it must be still a Equilateral Triangle.

The other options are talking about how the equilateral triangle changes, But it not true only the positions on the coordinate plane changes.

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3 years ago

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2 years ago

A new baby elephant ate 23

sergejj [24]

If you multiply 23 by 12 you will get 276.

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3 years ago

Read 2 more answers

The graph of f(x) is shown. Estimate f(-3). f(-3) = 1

Effectus [21]

Answer:

There is no graph.

But 1 would be a good estimate if f(-3)=1

Step-by-step explanation:

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3 years ago

A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 84 inches. (A

Kisachek [45]

Answer:

A. 14x14x28

B. The maximum volume is 5488 cuibic inches

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 y whit this equation gives:

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

Now find the limit of x:

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

Find the length:

$y=84-4(14)=28$

You can now calculate the maximum volume:

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

6 0

2 years ago