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lora16 [44]
3 years ago
12

Please help please i dont know how to do it I need to get my grades up asap

Mathematics
1 answer:
bearhunter [10]3 years ago
6 0

Answer:

Well if you need help with graphing, there's a website named Desmos Graphing calculator. If you want to get your grades up, listen to some music then do the easy stuff. I dont know any websites from the top of my head :p

Step-by-step explanation:

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The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi
rewona [7]

Answer:

a. 8.66 minutes

Step-by-step explanation:

Since the flight times are uniformly distributed, the standard deviation can be calculated as follows:

\sigma = \frac{b-a}{\sqrt{12}}

Where '<em>b' </em>is the maximum flight time (150 minutes) and '<em>a' </em>is the minimum flight time (120 minutes):

\sigma = \frac{150-120}{\sqrt{12}}\\\sigma = 8.66\ minutes

The distribution's standard deviation is 8.66 minutes.

4 0
3 years ago
Simplify 16 - 12 ÷ 4 +3 (6-2) show working plz ​
ira [324]

Answer:

20

Step-by-step explanation:

16-12/4+3(6-2)      subtract 6 and 2

16-12/4+3+4          divide 12 and 4

16-3+3+4              subtract 16 and 3

13+3+4                 add all 3 numbers

13+7

20

4 0
3 years ago
Identify the percent of change as an increase or a decrease.<br><br> 75 people to 25 people
Anna11 [10]

Answer:

1/3

Step-by-step explanation:

im not sure what answer you were looking for but hope this helps

6 0
2 years ago
Find the product.
algol13
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3 years ago
Which of the following is an algebraic expression that represents the phrase X increased by 20
iren2701 [21]

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The expression means that X+20

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