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2 years ago

PLEASE HELP! I NEED THIS IN ORDER TO GRADUATE TOMORROW!!!

Mathematics

2 answers:

lara31 [8.8K]2 years ago

7 0

For the 1st hour the cost is $50 whatever is the duration (providing it's 1 hour max.

From one hour and onward the cost becomes an additional $25 per quater of an hour.

If y is the cost and x the number of hours, then the equation becomes :

y =50 + 0.25.x or y =1/4x + 50

Mashutka [201]2 years ago

4 0

Answer: A

Step-by-step explanation:

Which statement describes the relationship between labor cost and time for a car repair?

All repairs requiring 1 hour or less have the same labor cost.

Labor costs the same no matter how many hours are used for a repair.

Labor costs for a repair are more expensive as the number of hours increases.

There is no cost of labor for a repair requiring less than 1 hour.

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A certain company sends 40% of its overnight mail parcels by means of express mail service A1. Of these parcels, 4% arrive after

Harrizon [31]

Answer:

(a) The probability that a randomly selected parcel arrived late is 0.026.

(b) The probability that a parcel was late was being shipped through the overnight mail service A₁ is 0.615.

(d) The probability that a parcel was late was being shipped through the overnight mail service A₃ is 0.192.

Step-by-step explanation:

Consider the tree diagram below.

(a)

The law of total probability sates that: $P(A)=P(A|B)P(B)+P(A|B')P(B')$

Use the law of total probability to determine the probability of a parcel being late.

$P(L)=P(L|A_{1})P(A_{1})+P(L|A_{2})P(A_{2})+P(L|A_{3})P(A_{3})\\=(0.04\times0.40)+(0.01\times0.50)+(0.05\times0.10)\\=0.026$

Thus, the probability that a randomly selected parcel arrived late is 0.026.

(b)

The conditional probability of an event A provided that another event B has already occurred is:

$P(A|B)=\frac{P(B|A)P(A)}{P(B)}$

Compute the probability that a parcel was late was being shipped through the overnight mail service A₁ as follows:

$P(A_{1}|L)=\frac{P(L|A_{1})P(A_{1})}{P(L)} \\=\frac{0.04\times 0.40}{0.026} \\=0.615$

Thus, the probability that a parcel was late was being shipped through the overnight mail service A₁ is 0.615.

(c)

Compute the probability that a parcel was late was being shipped through the overnight mail service A₂ as follows:

$P(A_{2}|L)=\frac{P(L|A_{2})P(A_{2})}{P(L)} \\=\frac{0.01\times 0.50}{0.026} \\=0.192$

Thus, the probability that a parcel was late was being shipped through the overnight mail service A₂ is 0.192.

(d)

Compute the probability that a parcel was late was being shipped through the overnight mail service A₂ as follows:

$P(A_{3}|L)=\frac{P(L|A_{3})P(A_{3})}{P(L)} \\=\frac{0.05\times 0.10}{0.026} \\=0.192$

Thus, the probability that a parcel was late was being shipped through the overnight mail service A₃ is 0.192.

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2 years ago

A mapping diagram shows a relation, using arrows, between input and output for the following ordered pairs: (negative 5, 0), (2,

iVinArrow [24]

Answer:

-1

onyl becausse they are basically -3 4 {r84 if u havent got to that yet basically no

Step-by-step explanation:

-3

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1 year ago

Mike's Bikes has mountain bikes that usually sell for $275 on sale for $220. Mike used this ratio to find the percent change. Is

MrRa [10]

No. Mike wrote the ratio as the amount of change to the new amount. He should have used the ratio of the amount of change to the original amount, which is 55

55/275 , or 20%.

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2 years ago

Read 2 more answers

Explain why 3/4 of 16 is the same as 3x16 divided by four?

kolbaska11 [484]

Its not. because 16 / .75 (which is 3/4) = 21.33--

3 * 16 = 48 / 4 = 12

I hope this helps :)

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2 years ago

2.2 A Train is Traveling at...

sdas [7]

Answer:

1.25 kilometers

Step-by-step explanation:

distance divided by time

7.5/6= 1.25

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2 years ago