If f(x) and 1(x) are inverse functions of each other and f(x) = 2x+5, what is ri(8)?-1
3/2
41/8 23

Answers

Answer 1

Answer:

3/2

Step-by-step explanation:

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John has a job transporting soft drinks by truck. his truck is filled with cans that weigh 14 ounces each and bottles that weigh 70 ounces each. there is a combined total of 820 cans and bottles in his truck. let x be the number of 14 -ounce cans in his truck. write an expression for the combined total weight

Zoe put in 80 hours of work in July for which she is entitled to $920.65. She also works 5 hours overtime. If she receives a paycheck of $1030.45 for the month, how much is she paid for an hour of overtime work?

Answers

Answer:

1951.1

Step-by-step explanation:

Just add her money up 920.65 + 1030.45= 1951.1

QUESTION 6 6.1 The following marks out of 50 were scored by learners in a Mathematics test. 41 33 26 14 45 23 24 27 13 33 12 6.1.1 Write down the range. 6.1.2 What is the modal mark? 6.1.3 Calculate the mean of the marks correct to two decimal places. 6.1.4 Determine the median mark.

Answers

Answer:

The range of a set of numbers is the difference between the highest and lowest values. In this case, the highest mark is 45 and the lowest mark is 6.1.1 Therefore, the range is 45 - 6.1.1 = 38.9.

Step-by-step explanation:

hope it helped, darling

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Janna is making a prediction of the frequency of a key that is 12 keys from middle c. which best describes her prediction? interpolation, because a key that is 12 keys from middle c is within the data set interpolation, because a key that is 12 keys from middle c is outside the data set extrapolation, because a key that is 12 keys from middle c is within the data set extrapolation, because a key that is 12 keys from middle c is outside the data set

Answers

The correct answer is:

Extrapolation, because a key that is 12 keys from middle c is outside the data set.

Explanation:

Interpolation is inserting an intermediate value into an existing series using estimation or calculations from nearby values. A key 12 keys from middle C is not in the data set involved, so this is not interpolation.

Extrapolation involves using a trend or pattern to estimate unknown values past the values we have. Since this key would be past our data set that we have, this would be extrapolation.

Among the choices the one that best describes her prediction is "extrapolation, because a key that is 12 keys from middle C is outside the data set".

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The temperature one morning in Shasta was LaTeX: -12^\circ F− 12 ∘ F. By the afternoon, the temperature had risen LaTeX: 8^\circ F8 ∘ F. What was the temperature in the afternoon.

Answers

Answer:

The Temperature in the afternoon was $-4\° F$ .

Step-by-step explanation:

Given:

Temperature in the morning = $-12\° F$

Rise in temperature = $8\° F$

We need to find the temperature in the afternoon.

Solution:

Now we know that;

temperature in the afternoon is equal to Temperature in the morning plus Rise in temperature in afternoon.

framing in equation form we get;

temperature in the afternoon = $-12\° F+8\° F=-4\° F$

Hence the Temperature in the afternoon was $-4\° F$ .

The teachers’ edition of a statistics textbook sells for $150, and students’ edition of the book sell for $50 each. Which function can be used to find the average cost per book if two teachers’ editions and x students’ editions are purchased? a) f(x)= 150+50x over 1+x
b) f(x)= 150+50x over 2+x
c) f(x)= 300+50x over 1+x
d) f(x)= 300+50x over 2+x

Answers

Answer: d) f(x)= 300+50x over 2+x

Step-by-step explanation:

Since, the money earned by a teacher in selling a book = $ 150

⇒ The money earned by 2 teacher = $ 300

Now, the money earned by a student in selling the book = $ 50

⇒ The money earned by x students = 50x

Thus, the total collection by 2 teacher and x students = 300 + 50x

And, the total persons = 2 teachers + x students = 2 + x

$\text{ The average collection}=\frac{\text{ Total collection}}{\text{Total persons}}$

$=(300+50x)/(2+x)$

⇒ Option d) is correct.

Average =
Sum of all / total number of things

The sum of that would be 300 + 50x
The total number of things would be 2+x

Therefore it is
(300+50x) /2+x

Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2.