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evablogger [386]
3 years ago
5

HELPPPP

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Dilation about the origin multiplies every coordinate by the scale factor.

C' = 4(-5, 2) = (-20, 8)

A' = 4(-4, 4) = (-16, 16)

T' = 4(-1, 2) = (-4, 8)

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Out of a group of 120 students that were surveyed about winter sports 28 said they ski 53 said they snowboard Sixteen of the stu
hjlf

Answer:

P ( snowboard I ski)​ = 0.5714

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

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

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Ski

Event B: Snowboard.

28 out of 120 students ski:

This means that P(A) = \frac{28}{120} = 0.2333

16 out of 120 do both:

This means that P(A \cap B) = \frac{16}{120} = 0.1333

P ( snowboard I ski)​

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1333}{0.2333} = 0.5714

So

P ( snowboard I ski)​ = 0.5714

7 0
3 years ago
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a. Suppose a BMW dealer in Fullerton, CA is trying to calculate the probability of his car sale for next week. The dealer knows
egoroff_w [7]

Answer:

0.45576

Step-by-step explanation:

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σ is the population standard deviation.

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= 3

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Probability value from Z-Table:

P(x<51) = 0.54424

P(x>51) = 1 - P(x<51)

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= 0.45576

The probability that the dealer will sell 51 or more cars is 0.45576

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Answer:

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Step-by-step explanation:

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saveliy_v [14]

Answer:

yes i am

Step-by-step explanation:

thank you for noticing my style

8 0
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Mrs. ciampa had 27 students In her class last year and this year she had 30 students in her math class. What is the percent of c
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Answer:

10%

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