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OverLord2011 [107]
3 years ago
11

The cost for driving a car at various speed is affected by engine efficiency and wind speed. When driving at slow speeds the eng

ine is not very efficient. When driving at high speeds eind resistamce lowers engine efficiency. Moderate speeds are actually. As a result the number of cents per kilometers it costs to drive a car varies quadratically with the number of kilometers per hour.
A. Write a representative quadratic function if it cost 28,21, and 16 cents per kilometer to drive at 10,20 and 30 kph, respectively

B. what would be the cost of driving 150 kph?

C. What range of speeds would allow you to keep your cost at no more than 13 cents per kilometer? Sketch a representative graph for this situation

D.if you wanted your cost per kilometer to be 10 cents , should you purchase a car represented by this data? Explain your answer.

E. At what speed will you get the lowest cost per kilometer? What will be the cost per kilometer at the speed? What part of the function represents this situation?

Please answer all the questions
Mathematics
2 answers:
Afina-wow [57]3 years ago
6 0

Answer:


Step-by-step explanation:D.if you wanted your cost per kilometer to be 10 cents , should you purchase a car represented by this data? Explain your answer.


dexar [7]3 years ago
4 0
The correct answer is d
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Consider the functions. F(x)=(x+1)2-4 and g(x)=-4|x+1| which statement compares the range of the functions?
Andreyy89

Answer:

<h2>        The fourth</h2>

Step-by-step explanation:

Vertex of f is (-1, -4) so its range is limited to y≥-4

|x+1| is always ≥0 therefore -|x+1| is always ≤0 {4 is insignificant to this - slope doesn't mean in range} so its range is limited to y≤0

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3 years ago
In one basketball season, Susan threw the ball and it went in the basket 56 times. If 7/8 of the baskets Susan threw were worth
Ket [755]

Answer:

119

Step-by-step explanation:

Divide the number of baskets (56) by the denominator:

56 ÷ 8 = 7

Multiply by 7 to get the amount of 2 point baskets and multiply by 1 to get the amount of 3 point baskets. (they both add up to 56 baskets)

7 × 7 = 49

7 × 1 = 7

multiply the 49, 2 point baskets by 2 and the 7, 3 point baskets by 3 and add them together to get the total points.

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3 years ago
26(92' please someone tell me what this means
Sphinxa [80]
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2 years ago
Why don’t Noble Gases have a value for electronegativity?
kumpel [21]

Answer:

The answer is 1.

Step-by-step explanation:

Nobel gases have full shell of valence electrons, that is why they tend to not enter any chemical reactions because they are satisfied while metals have very few electrons in the valence shell, so they are active in any chemical reaction.

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Which of the following correctly isolates the constant for the polynomial: x2 – 12x + 27
Andru [333]

Answer:

x^2 - 12x = -27

Step-by-step explanation:

Here, we want to isolate the constant for the polynomial

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