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3 years ago

WILL MARK BRAINLIEST!! PLEASE BE QUICK!!

Mathematics

2 answers:

Zina [86]3 years ago

6 0

Answer is B,
I put it into a graph and when I put in f(x)=15/2x -20 then I looked at the graph to find if 0,-20 and 4,10 passed through the line and they did. Hope this helps you out

DiKsa [7]3 years ago

5 0

That’s so much to read but I’ll do my best to help

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How to find area of a parallelogram

olganol [36]

Answer:

BxH

Step-by-step explanation:

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3 years ago

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How do I make 24/9 into a mixed number

wlad13 [49]

U divide 24 to 9, which is not going to be an exact number, but you can do 9times2=18 so then if you do it in a long division bar you will put 2 on top then minus 18 from 24 which will give you 6, then ur answer is going to be 2 6/9 the nine stays the same (the denominator stay put)

HOPE IT HELPS :)

7 0

3 years ago

4x - 7y - 5z + 6<br><br> Write an expression equal that only uses addition

scoray [572]

4x + (-7y) + (-5z) + 6

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3 years ago

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iragen [17]

D. (120,80,40) just add it up really

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3 years ago

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Consider f(x)=3ax−x2. write down a formula in terms of a for the maximum of f(x).

lidiya [134]

For this case we have the following function:
$f (x) = 3ax-x ^ 2
$
To find the maximum of the function, what we should do is to derive the equation.
We have then:
$f '(x) = 3a-2x
$
We match zero:
$3a-2x = 0
$
We clear the value of x:
$2x = 3a

x = (2/3) a$
We substitute the value of x in the function to find the maximum:
$f ((2/3) a) = 3a ((2/3) a) - ((2/3) a) ^ 2
$
Rewriting:
$f ((2/3) a) = 2a ^ 2 - (4/9) a ^ 2

f ((2/3) a) = (18/9) a ^ 2 - (4/9) a ^ 2

f ((2/3) a) = (14/9) a ^ 2$
Answer:
a formula in terms of a for the maximum of f (x) is:
$f ((2/3) a) = (14/9) a ^ 2$

7 0

3 years ago