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Vsevolod [243]
3 years ago
7

12 problems in45 mins 20 problems in how much time

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

Step-by-step explanation:

well i think it would be 45÷12 and then your answer would be how many minutes per question and theres your answer. hope this helps

Anni [7]3 years ago
5 0

Answer:

75 mins or 1 hour 15 min :)

Step-by-step explanation:

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Please help i will give brainliest
Mnenie [13.5K]

Answer:

d is the answer

7 0
2 years ago
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Determine the explicit equation for the arithmetic sequence given below.-3,-7,-11,-15,-19
liraira [26]

Answer:

-3 + (n-1)(-4)

Step-by-step explanation:

We follow the formula.

a1 + (n-1)d

d is the common difference.

7 0
3 years ago
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At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 18 m
Colt1911 [192]

Answer:

99.7% of customers have to wait between 8 minutes to 30 minutes for their food.

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 18 minutes

Standard Deviation, σ = 4 minutes

We are given that the distribution of amount of time is a bell shaped distribution that is a normal distribution.

Empirical Formula:

  • Almost all the data lies within three standard deviation from the mean for a normally distributed data.
  • About 68% of data lies within one standard deviation from the mean.
  • About 95% of data lies within two standard deviations of the mean.
  • About 99.7% of data lies within three standard deviation of the mean.

Thus, 99.7% of the customers have to wait:

\mu -3\sigma = 18-3(4) = 6\\\mu +3\sigma = 18+3(4) = 30

Thus, 99.7% of customers have to wait between 8 minutes to 30 minutes for their food.

3 0
3 years ago
32, 28, 21, 31, 18<br><br> Is 18 an outlier or no?
Kryger [21]

Answer:

No because 21 is close to it.

Step-by-step explanation:

To be considered an outlier, it would need to be a farther distance such as the distance from 28 to 21.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

4 0
3 years ago
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PLEASE PLEASE HELP ME!!
Ivenika [448]

Answer:

A-

X=11

(the solution is down)

B-

x+x+1+x+2=36

3x+3=36

3x=36-3

3x=33

x=33/3

x=11

------------

X=11

X+1=12

X+2=13

11+12+13=36

8 0
3 years ago
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