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Volgvan
3 years ago
10

a television program is 60 minutes long, and 20% of the time is taken up by commercials. How many minutes of commercials are the

re
Mathematics
1 answer:
hodyreva [135]3 years ago
7 0
There would be 12 minutes of commercials
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Write down a formula for the nth term for each number pattern below
tresset_1 [31]

Answer:

Step-by-step explanation:

a_{n} =2(2n+1)

a_{n} =1-3n\\

4 0
2 years ago
What is the surface of a sphere with the radius of 5 ft
iragen [17]

Hello there, to answer your question...

Surface Area =  4πr2

=  4×π×52

=  100π

<h2>=  314.159</h2>

5 0
3 years ago
Which statement is true of the function f(x) = Negative RootIndex 3 StartRoot x EndRoot? Select three options.
ycow [4]

Answer:

Options (2), (3) and (4) are correct.

Step-by-step explanation:

The given function is f(x) = -\sqrt[3]{x}

1). First derivative of the function = f'(x) = \frac{d}{dx}(-\sqrt[3]{x} )

  f'(x) = -\frac{1}{3}(x)^{-\frac{2}{3}}

  Since derivative is negative, function will be decreasing everywhere.

  Therefore, Option (1) is incorrect.

2). Since value of the function is true for every value of all real values of x.

  Domain of the function is (-∞, ∞).

  Therefore, Option (2) is correct.

3). For the given domain, range of the function will be all real values of y Or (-∞, ∞)

  Therefore, Option (3) is correct.

4). Function 'f' when reflected across x axis, equation of the reflected function will be g(x) = \sqrt[3]{x}.

 Therefore, Option (4) is correct.

5). For a point (3, -27),

  -27 = -\sqrt[3]{3}

  Therefore, Option (5) is incorrect.

8 0
3 years ago
Diego plans to build an extension to his rectangular model bridge. Let x represent the increase, in centimeters, of the model's
marishachu [46]

Answer:

(21x+168)cm²

Step-by-step explanation:

If the expression 2 1 (x + 8) represents the area of the model bridge, where 2 1 is the width, in centimeters, and (x + 8) represents the extended length, the expression that is equivalent to 21(x+8) can be gotten by expanding the function. The expansion of the function will give the area of the rectangular model bridge as shown;

21(x+8) = 21x+ 168

The expression equivalent to 21(x+8) is therefore (21x+68)cm²

Note that the the unit of the value and function given is in cm therefore the unit of their equivalent expression will be in cm²

8 0
3 years ago
Read 2 more answers
The average score on a test taken by 200 students is 80 and standard deviation is 10. if each student's score is increased by 5,
Jlenok [28]
New mean = 100 I believe. Could be wrong. I’m tired so I might not be thinking straight
5 0
3 years ago
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