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dimaraw [331]
3 years ago
7

It’s for a quiz :,) any help would be appreciated!

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
8 0

Answer:

im pretty sure a, b, and d

Step-by-step explanation:

the domain is 3, 0 and for every y value the x value is 3

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What's a simplified form of x-1+4+7x-3
Dovator [93]
Ok so right now leave the x's alone. Now add/subtract the numbers without variables which would equal to 0 since -1+4 = 3 and 3-3 =0

now 7x+x =8x so 8x is answer
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3 years ago
Which division expression means that the temperature is falling at a rate of 3 degrees every 4 hours?
stira [4]
The answer would be a -3/4 I’m almost positive
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3 years ago
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The measurement of the height of 600 students of a college is normally distributed with a mean of
ioda

Answer:

68

Step-by-step explanation:

We let the random variable X denote the height of students of the college. Therefore, X is normally distributed with a mean of 175 cm and a standard deviation of 5 centimeters.

We are required to determine the percent of students who are between 170 centimeters and 180 centimeters in height.

This can be expressed as;

P(170<X<180)

This can be evaluated in Stat-Crunch using the following steps;

In stat crunch, click Stat then Calculators and select Normal

In the pop-up window that appears click Between

Input the value of the mean as 175 and that of the standard deviation as 5

Then input the values 170 and 180

click compute

Stat-Crunch returns a probability of approximately 68%

5 0
3 years ago
It would take Marco 6 hours to paint a fence by himself. It would take Jaylyn 5 hours to paint the same fence by herself. Marco
Lyrx [107]

<u>Answer</u>

Time taken to paint the fence by Marco  and Jaylyn is 2.72 hours

Heading can be given to this is work per hour

<u>Explanation</u>

Macro 6 hours to paint fence by himself

Therefore his 1 hour work = 1/6

Jaylyn 5 hours to paint the same fence by herself

Therefore 1 hour work of  Jaylyn  = 1/5

Together 1 hour work = 1/6 + 1/5 = 11/30

Therefore time taken to paint the fence together by them = 30/11 = 2.72 hours

4 0
3 years ago
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A presidential candidate plans to begin her campaign by visiting the capitals in 44 of 5050 states. what is the probability that
defon
Part A:

Given that <span>A presidential candidate plans to begin her campaign by visiting the capitals in 4 of 50 states.

The number of ways of selecting the route of 4 specific capitals is given by

^{50}P_4= \frac{50!}{(50-4)!} =  \frac{50!}{46!} =50\times49\times48\times47=5,527,200

Therefore, the probability that she selects the route of four specific​ capitals is \frac{1}{5,527,200}



Part B:
</span>
<span>The number of ways of selecting the route of 4 specific capitals is 5,527,200.

Since </span><span>the number of ways of selecting the route of 4 specific capitals is too large it is not practical to list all of the different possible routes in order to select the one that is​ best.

Therefore, "</span><span>No, it is not practical to list all of the different possible routes because the number of possible permutations is very large."</span>
3 0
3 years ago
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