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Brums [2.3K]
3 years ago
14

I asked this question yesterday, but no one answered, and i really need help! it would be nice if u halped :) thank you

Mathematics
1 answer:
babymother [125]3 years ago
3 0

Answer:

Total running time is 22.5

Step-by-step explanation:

The running time of TV episode is given by

where c is the number of commercials.

now it is given that number of ads are 15.

Inserting value of 15 as c in the equation,

Thus the total running time is 22.5

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HELP PLEASE LOTS OF POINTS!!
Paladinen [302]

Answer:

<em>Thus, f and g are inverse functions</em>

Step-by-step explanation:

<u>Inverse Functions</u>

If two functions f(x) and g(x) are inverses, then it follows that:

f\circ g(x)=x

Or:

g\circ  f(x)=x

We are given

\displaystyle f(x)=\frac{1}{4}x-6

g(x)=4x+24

Let's test if they are inverse functions:

f\circ g(x)=\frac{1}{4}(4x+24)-6

Simplifying:

f\circ g(x)=x+6-6=x

Now find:

\displaystyle g\circ f(x)=4\left(\frac{1}{4}x-6\right)+24

Operating:

\displaystyle g\circ f(x)=x-24+24=x

Thus, f and g are inverse functions

6 0
3 years ago
Read 2 more answers
On a hot, sunny day, a random selection of people in a small town were given a photo of a skating rink in a big city and asked t
tresset_1 [31]
It can't be timing or cost since it is only a few people , i chose bias because a few people is actually 7 - 8 people 

8 0
3 years ago
Sandy surveyed band students to determine the music for the school dance. Many students were unhappy with the selection. What mi
saw5 [17]

Answer: C.)The survey should include all music choices.

Step-by-step explanation: To be honest i'm not sure-.

8 0
2 years ago
Which of the following is a point slope equation of the line below (10,5)(2,2)
salantis [7]
Point slope form follows the equation y-y₁=m(x-x₁), so we want it to look like that. Starting off with m, or the slope, we can find this using your two points with the formula \frac{ y_{1}  -y_{2} }{ x_{1} - x_{2} }. Note that y₁ and x₁ are from the same point, but it does not matter which point you designate to be point 1 and point 2. Thus, we can plug our numbers in - the x value comes first in the equation, and the y value comes second, so we have
\frac{5-2}{10-2} = \frac{3}{5} as our slope. Keeping in mind that it does not matter which point is point 1 and which point is point 2, we go back to  y-y₁=m(x-x₁) and plug a point in (I'll be using (10,5)). Note that x₁, m,  and y₁ need to be plugged in, but x and y stay that way so that you can plug x or y values into the formula to find where exactly it is on the line. Thus, we have our point slope equation to be y- 5= \frac{3}{5} (x-10)

Feel free to ask further questions!
7 0
3 years ago
How many different ways can 5 students line up in a cafteria
lina2011 [118]
Ans: 120 different ways
7 0
3 years ago
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