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lana [24]
2 years ago
6

The price of a

Mathematics
2 answers:
Nat2105 [25]2 years ago
8 0

Answer:

$31.5

Step-by-step explanation:

The t-shirt is worth $42

$42 is 100% of the actual price or the real price of the t-shirt

25% off, means you subtract 25% of 42 off of the t-shirt, or you find 100% - 25% of the t-shirt

25% - 100% = 75%

75% of 42 = 0.75 * 42 = 31.5

The sale price of the t-shirt is $31.5

-Chetan K

RideAnS [48]2 years ago
7 0

Answer:

$31.5

Step-by-step explanation:

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Your family needs a set of 4 tires. Which of the following deals would you prefer? Complete the explanation below to tell which
kherson [118]

Answer

Buy 2, get 2 free and/or 1/2 off

Step-by-step explanation:

OK, lets say that the tire price was 15. (l)= 15+15=30 (ll)= 15/45%= 33.33x4=133.32 (lll)= 15/2=7.5   7.5x4=30

6 0
3 years ago
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes
Komok [63]

Answer:

a. The probability of completing the exam in one hour or less is 0.0783

b. The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is 0.3555

c. The number of students will be unable to complete the exam in the allotted time is 8

Step-by-step explanation:

a. According to the given we have the following:

The time for completing the final exam in a particular college is distributed normally with mean (μ) is 77 minutes and standard deviation (σ) is 12 minutes

Hence, For X = 60, the Z- scores is obtained as follows:

Z=  X−μ /σ

Z=60−77 /12

Z=−1.4167

Using the standard normal table, the probability P(Z≤−1.4167) is approximately 0.0783.

P(Z≤−1.4167)=0.0783

Therefore, The probability of completing the exam in one hour or less is 0.0783.

b. In this case For X = 75, the Z- scores is obtained as follows:

Z=  X−μ /σ

Z=75−77 /12

Z=−0.1667

Using the standard normal table, the probability P(Z≤−0.1667) is approximately 0.4338.

Therefore, The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is obtained as follows:

P(60<X<75)=P(Z≤−0.1667)−P(Z≤−1.4167)

=0.4338−0.0783

=0.3555

​

Therefore, The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is 0.3555

c. In order to compute  how many students you expect will be unable to complete the exam in the allotted time we have to first compute the Z−score of the critical value (X=90) as follows:

Z=  X−μ /σ

Z=90−77 /12

Z​=1.0833

UsING the standard normal table, the probability P(Z≤1.0833) is approximately 0.8599.

Therefore P(Z>1.0833)=1−P(Z≤1.0833)

=1−0.8599

=0.1401

​

Therefore, The number of students will be unable to complete the exam in the allotted time is= 60×0.1401=8.406

The number of students will be unable to complete the exam in the allotted time is 8

6 0
3 years ago
Evan drew 8 pictures. Alexa drew p fewer pictures than Evan. Write an expression that shows how many pictures Alexa drew.
zhenek [66]

Answer:

8 - p

Step-by-step explanation:

X is p fewer than Y … X = Y - P

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1 year ago
The table shows the location of four cites relative to sea level. Find the city that is closest to sea level.
STatiana [176]
The answer is C.
Because it is closest location relative to the sea!
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You compare the number of words per sentence in a sports magazine to the number of words per sentence in a fashion magazine. The
goldenfox [79]

Answer:

answer is b

Step-by-step explanation:

8 0
3 years ago
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