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3 years ago

Hi how do I have a teacher help me on here like I did it before can someone help

Mathematics

2 answers:

Gennadij [26K]3 years ago

5 0

Answer:

Like a tutor?

Step-by-step explanation:

spayn [35]3 years ago

3 0

Answer:

Hi I am willing to help you. What is your question?

Step-by-step explanation:

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Evaluate each expression.<br> 12<br> N<br> 3<br> (2511)<br> -<br> DONE

blondinia [14]

Answer:

Step-by-step explanation:

$(25^{-3/2})^{1/3} = 25^{-3/2*1/3} = 25^{-1/2}=5^{-1/2*2}=5^{-1}=1/5$

3 0

2 years ago

Read 2 more answers

Find the derivative of f(x) = 4 divided by x at x = 2.

polet [3.4K]

<h2>Hello!</h2>

The answer is:

$f'(2)=-1$

To solve this problem, first we need to derivate the given function, and then, evaluate the derivated function with x equal to 2.

The given function is:

$f(x)=\frac{4}{x}$

It's a quotient, so, we need to use the following formula to derivate it:

$f'(x)=\frac{d}{dx}(\frac{u}{v}) =\frac{v*u'-u*v'}{v^{2} }$

Then, of the given function we have that:

$u=4\\v=x$

So, derivating we have:

$f'(x)=\frac{d}{dx}(\frac{4}{x}) =\frac{x*(4)'-4*(x)'}{x^{2} }$

$f'(x)=\frac{d}{dx}(\frac{4}{x}) =\frac{x*0-4*1}{x^{2} }$

$f'(x)=\frac{d}{dx}(\frac{4}{x}) =\frac{0-4}{x^{2} }$

$f'(x)=\frac{d}{dx}(\frac{4}{x}) =\frac{-4}{x^{2} }$

Hence,

$f'(x)=\frac{d}{dx}(\frac{4}{x}) =\frac{-4}{x^{2} }$

Now, evaluating with x equal to 2, we have:

$f'(2)=\frac{-4}{(2)^{2} }$

$f'(2)=\frac{-4}{4}$

$f'(2)=-1$

Therefore, the answer is:

$f'(2)=-1$

Have a nice day!

4 0

3 years ago

Read 2 more answers

Help me with Alims sales tax problem

wlad13 [49]

First you need to find the amount for each of the items, then total it up:

T-shirts> 9.50 x 2 = 19
Socks> 7.95 x 3 = 23.85
Shoes> 49.95
Total: 19 + 23.85 + 49.95 = $92.80

Next find the tax:

(to find the taxes you multiply the total by the percent)
92.8 x 0.06 = 5.57
-- then add the amount to your item total
92.8 + 5.57 = 98.37

~OR~

You could multiply the item total by 1.06 so that you wouldn't have to add to taxes to the previous total because it is already part of the equation

92.8 x 1.06 = 98.37

8 0

3 years ago

QUESTION 10, 11, 12 and 13, 40 POINTS FOR CORRECT AWNSER AND WILL BE BRAINLIEST PLS BE FAST!! I WILL DO ANYTHING U WANT

kvv77 [185]

10. The missing conversion is 20.32 inches

11. Total number of red cars is 34

12. Total number of blue cars is 36

13. Total number of silver cars is 70

<h3>What is Ratio?</h3>

Ratio is the number of times a quantity is contained more or less than another in a whole.

Analysis:

10. If 1 inch = 2.54cm

Then 8 inches = 8 x 2.54cm = 20.32 cm

First car park: Total number of cars = 60

ratio of red:blue:silver = 1:2:3

Total ratio = 1+2+3 = 6

number of red cars = 1/6 x 60 = 10

number of blue cars = 2/6 x 60 = 20 cars

number of silver cars = 3/6 x 60 = 30

second car park: Total number of cars = 80

ratio of blue: red: silver = 2:3:5

total ratio = 2+3+5 = 10

number of red cars = 3/10 x 80 = 24

number of blue cars = 2/10 x 80 = 16

number of silver cars = 5/10 x 80 = 40

11. Total number of red cars = 10+24 = 34

12. Total number of blue cars = 20+16 = 36

13. Total number of silver cars = 30+40 = 70

Learn more about ratio: brainly.com/question/2328454

#SPJ1

4 0

2 years ago

If x and y are different numbers from 1-50 what is the greatest possible value for (x+y)/(x-y)

fiasKO [112]

Answer:

Step-by-step explanation:

Evaluate (x+y)/(x-y) for greatest possible value with the following constraints:

x ≠ y

1 ≤ x ≤ 50

1 ≤ y ≤ 50

To achieve greatest possible value:

Numerator should be as large as possible.

Denominator should be as small as possible without being negative.

x = 50

y = 49

= (50 + 49)/(50 - 49)

= 99/1 = 99

5 0

3 years ago