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xeze [42]
3 years ago
11

For the given function ​f(x)equals2.8xplus4.4​, x is the number of years since 2000 and y​ (or f(x)) is the percent of students

taking at least one online course. Find ​f(9​) and describe in words what this means.
Mathematics
1 answer:
slega [8]3 years ago
7 0
Use photo math is very useful for things
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I don’t understand this
Oxana [17]

You have to multiply whats outside the parenthesis with everything that is inside, so

x^{-3}y^0.(x^2-3x^5y^4)

x^{-3}y^0.x^2-x^{-3}y^0.3x^5y^4

Multiplication of same bases we sum the exponents

x^{-3+2}y^0-3x^{-3+5}y^{0+4}

x^{-1}.1-3x^2y^4

x^{-1}-3x^2y^4

Alternative B.

7 0
3 years ago
A cylindrical bin with a diameter of 15 feet 3 inches and a height of 24 feet 4 inches is used to hold wheat on the farm where y
Zepler [3.9K]

Given

A cylindrical bin with a diameter of 15 feet 3 inches and a height of 24 feet 4 inches is used to hold wheat.

One cubic foot holds 0.804 bushels

Find out bushels of wheat can be stored.

To proof

Formula

Volume\ of\ a\ cylinder = \pi r^{2}h

where r is the radius and h represent the height.

As given in the question

diameter = 15 feet 3 inches

height = 24 feet 4 inches

First convert inches into feet

I inches = 0.083 feet

15 feet 3 inches = 15 + 3 × 0.083

                          =    15.25 feet

Diameter = 15.25 feet

24 feet 4 inches = 24  + 4 ×0.083

                           = 24.33 feet

Height = 24.33 feet

Radius\ of\ cylinder = \frac{Diameter}{2}

Radius = 7.63 feet

\pi = 3.14

Put all the value in the above formula.

we get

Volume of the cylinder = 3.14× 7.63× 7.63× 24.33

                                      = 4447.55 foot³ ( approx)

As given

One cubic foot holds 0.804 bushels

Total bushels of wheat can be stored = 4447.55×0.804

                                                               = 3575.83 ( approx)

Total bhushels of wheat stored are  3575.83 ( approx).

Hence proved

6 0
3 years ago
Read 2 more answers
A city has an elevation of 465 feet. Another city has an elevation of -45 feet. Which expression can be used to find the differe
KengaRu [80]
465 -(-45) = x

This creates a double negative which becomes a positive and you solution would be 465+45 =X, X = 510
6 0
3 years ago
Mr. Crosby's is driving jack, cassidy, and victor to the library. Jake lives 1/4 miles from the library, cassidy lives 1)3 mile
irakobra [83]

Answer:

5/8, 1/3, 1/4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Sven has a lawn mowing business. He earns $30 for every 2 weeks of mowing
NeX [460]
Whats your question? What are you trying to find?
4 0
2 years ago
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