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DerKrebs [107]
3 years ago
5

If f(x) = −-4x^{2} + 15, then f(−3) =

Mathematics
2 answers:
Naddik [55]3 years ago
6 0

Answer:

\Huge \boxed{-21}

Step-by-step explanation:

f(x) = -4x^{2} + 15

<em>f(-3)</em>, the input is -3 for the function <em>f(x)</em>.

The value of<em> x</em>  =  -3

f(-3) = -4(-3)^{2} + 15

Evaluate the expression.

f(-3) = -4(9)+ 15

f(-3) = -36+ 15

f(-3)=-21

The value of<em> f(-3) </em>is -21.

MariettaO [177]3 years ago
5 0

Answer:

f(-3) = -21

Step-by-step explanation:

To find f(-3), we just need to plug x = -3 into f(x) so:

f(-3) = -4 * (-3)² + 15

= -4 * 9 + 15 = -36 + 15 = -21

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A company requires a password to access a data storage vault. The password must be 4 characters long and may
lisov135 [29]

Answer:

There are 36 possibilities per character (26 lower case letters + 10 numbers), so the total number of permutations are 36^4 = 1,679,616

Step-by-step explanation:

5 0
3 years ago
fatima claims that the distribution of u is uniform with a median of 0.4 field goal percentage. is fatima’s claim supported by t
Amanda [17]

Fatima's claim is not supported by the table because, the distribution is skewed right, with a median of 0.4 field goal advantage.

From the table, the median position is calculated as:

\mathbf{Median = \frac{1}{5} th}

\mathbf{Median = 0.2\ nd }

The 0.2nd data falls in the 0.4 field goal category.

So, the median element is:

\mathbf{Median = 0.4}

However, the distribution of the table are concentrated on the left.

This means that, the distribution is not uniform, instead it is skewed right.

A uniform distribution has a skewness of 0.

Hence, Fatima's claim is not supported by the table

Read more about distributions at:

brainly.com/question/13233983

8 0
3 years ago
2x+5=10<br> I need to find out x pls help​
Finger [1]

Answer:

5

Step-by-step explanation:

2x + 5 = 10

you minus the 5

2x = 5

you divide both sides by 2

x = 5

7 0
3 years ago
Read 2 more answers
Plot the points and find the slope (-3,5) (0,8)
iren [92.7K]
- 3 - 8 = - 11
5 - 0 = 5
- 11 / 5 = - 2 . 2
3 0
3 years ago
Find the reciprocal of the expression. 10b/2b + 8
Alexus [3.1K]
Comment
I think you need brackets to clarify what you mean. I think it should be written as 
10b/(2b + 8) 

If that is the case the reciprocal is

(2b + 8)/10b You just turn everything up side down. There are technical ways of doing this, but the easiest way is just to do what I just did. 

Put the numerator in  the denominator,
Put the denominator in the numerator.

You could simplify this a bit.
2b/10b + 8/10b
which reduces further.

1/5 + 4/5b 
Just to make sure you understand where that b is, I will do this in

Latex.\frac{2b + 8}{10b} =  \frac{2b}{10b} +  \frac{8}{10b} =  \frac{2}{10} + \frac{4}{5b} =  \frac{1}{5} +  \frac{4}{5b}

Alternate answer
If you do mean what your wrote then the reciprocal is 2b / 10b + 8 which is 1/5 + 8 = 8 + 0.2 = 8.2 

The 8 has nothing to do with the reciprocal under these conditions.

The answer
I have given you all the choices I can think of without going into decimals. If you have choices, please list them under the comments.
6 0
3 years ago
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