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Mama L [17]
2 years ago
9

Kevin earns $5 per hour at an ice rink. Which graph best represents Kevin's total earnings over time?

Mathematics
1 answer:
Aleonysh [2.5K]2 years ago
6 0

Answer:

If he earns 5$ an hour then just multiply how long he works over time by 5 and you get you answer C:     for ex: if he worked 24h he would get 120$ because 24 x 5=120

Step-by-step explanation:

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Write a word phrase for 25-0.6x
ahrayia [7]

Answer:

twentyfive minus 6tenths multiplied

Step-by-step explanation:

did you give me all the information?

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murzikaleks [220]

Answer:

4^6

Step-by-step explanation:

5 0
2 years ago
Which of the following is a quadratic equation?
Aloiza [94]

Answer:

  3)  4x² -1

Step-by-step explanation:

A quadratic equation is a 2nd-degree polynomial equation.

1) an exponential equation (the variable is in the exponent)

2) a cubic equation (degree = 3)

3) a quadratic equation

4) a linear equation (degree = 1)

4 0
2 years ago
Consider the following probability distribution function of the random variable X which represents the number of people in a gro
Troyanec [42]

Answer:

(a) 3.55

(b) 3.45 and 1.86

(c) 0.25

(d) 0.016

Step-by-step explanation:

The random variable <em>X</em> denotes the number of people in a group (party) at a restaurant.

(a)

The formula to compute the mean is:

\mu=\sum {x\cdot P(X=x)}

Consider the Excel sheet attached.

The mean is, 3.55.

(b)

The formula to compute the variance is:

\sigma^{2}=[\sum {x^{2}\cdot P(X=x)}]-(\mu)^{2}

Consider the Excel sheet attached.

Compute the variance as follows:

\sigma^{2}=[\sum {x^{2}\cdot P(X=x)}]-(\mu)^{2}\\\\=16.05-(3.55)^{2}\\\\=3.4475\\\\\approx 3.45

The variance is, 3.45.

Compute the standard deviation as follows:

\sigma=\sqrt{\sigma^{2}}\\\\=\sqrt{3.45}\\\\=1.85742\\\\\approx 1.86

The standard deviation is, 1.86.

(c)

Compute the probability that the next party will be over 4 people as follows:

P(X>4)=P(X=5)+P(X=6)+P(X=7)+P(X=8)\\\\=0.10+0.05+0.05+0.05\\\\=0.25

Thus, the probability that the next party will be over 4 people is 0.25.

(d)

Compute the probability that the next three parties will each be over 4 people as follows:

It is provided that the three parties are independent.

P (Next 3 parties will be each over 4) = [P (X > 4)]³

                                                           =(0.25)^{3}\\=0.015625\\\approx 0.016

Thus, the probability that the next three parties will each be over 4 people is 0.016.

3 0
3 years ago
Jonny went to the park and spent 80 dollars, he used to have 100, how much does he have now
VLD [36.1K]

Answer:

20$

Step-by-step explanation:

100-80=20

8 0
3 years ago
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