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3 years ago

Enter an algebraic expression for the word expression.

Mathematics

2 answers:

statuscvo [17]3 years ago

7 0

Answer:

2x - 11

Explanation:

We multiply x by 2 which gives us 2x, then subtract it by 11 which gives us 2x - 11.

I hope this helps!! ^-^

Anna11 [10]3 years ago

6 0

Answer:

2x-11

Step-by-step explanation:

twice a number x= 2x

minus 11= (-11) after 2x

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Write a rule for the linear function in the table.

Ira Lisetskai [31]

Answer:

f(x) = 4 - x

Step-by-step explanation:

'f(x) = blah-blah' is the same as saying 'y = blah-blah', except it is also telling you that the x-y relationship is a function.

I notice that for each case, x + y = 4, so y = 4 - x

Or in 'function' terminology, f(x) = 4 - x

5 0

3 years ago

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

olchik [2.2K]

Answer:

14.52 seconds.

Step-by-step explanation:

We have been given that the height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation $y=-16x^2+224x+121$ . We are asked to find the time, when the rocket will hit the ground.

We know that the rocket will hit the ground, when height will be 0. So to find the time when rocket will hit the ground, we will substitute $y=0$ in our given equation as:

$0=-16x^2+224x+121$

Let us solve for x using quadratic formula.

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-224\pm\sqrt{224^2-4(-16)(121)}}{2(-16)}$

$x=\frac{-224\pm\sqrt{50176+7744}}{-32}$

$x=\frac{-224\pm\sqrt{57920}}{-32}$

$x=\frac{-224\pm240.66574}{-32}$

$x=\frac{-224+240.66574}{-32}, x=\frac{-224-240.66574}{-32}$

$x=\frac{16.66574}{-32}, x=\frac{-464.66574}{-32}$

$x=-0.520804375, x=14.520804375$

Upon rounding to nearest 100th of second, we will get:

$x\approx -0.52, x\approx 14.52$

Since time cannot be negative, therefore, the rocket will hit the ground after 14.52 seconds.

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3 years ago

Read 2 more answers

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butalik [34]

Answer:

503 is the answer

Step-by-step explanation:

If you use Pemdos you have to start by doing the exponent then you multiply then after that you will have to do addition and that is how you get your answer

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3 years ago

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What is the value of 4^-2?

sammy [17]

Answer:

1/16

Step-by-step explanation:

<h2><em>Hope This Helps :)</em></h2><h2><em></em></h2>