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ohaa [14]
3 years ago
14

Hey can yalls help me plz ​

Mathematics
2 answers:
katen-ka-za [31]3 years ago
4 0

Answer:

4

Step-by-step explanation:

Cloud [144]3 years ago
3 0

Answer:

4 hours

Step-by-step explanation:

550 divided by 11 gets you 50 which means they were going 50 miles per hour then divide 50 by 200 and you get 4 hours.

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Simplify to create an equivalent expression.<br> −4(−11+4n)−3(−2n+9)
solmaris [256]

-4(-11 + 4n) - 3(-2n + 9) Given

44 - 16n + 6n - 27 Distributive property

17 - 10n Combine like terms

17 - 10n is our final answer. :)

5 0
3 years ago
Read 2 more answers
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
iris [78.8K]

Answer:

By the Empirical Rule, 99.7% of the students have grade point averages that are between 1.28 and 3.8.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed(bell-shaped) random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 2.54

Standard deviation = 0.42.

Between 1.28 and 3.8?

1.28 = 2.54 - 3*0.42

So 1.28 is 3 standard deviations below the mean

3.8 = 2.54 + 3*0.42

So 3.8 is 3 standard deviations above the mean

By the Empirical Rule, 99.7% of the students have grade point averages that are between 1.28 and 3.8.

5 0
3 years ago
Read 2 more answers
Solve for x pleaseeee!
Kaylis [27]

Answer:

x=-20

Step-by-step explanation:

3x+178=6x+238

-3x=60

x=-20

6 0
2 years ago
David bought a cape and mask for each of the 9 boys at his party. The capes cost $5.25 each and the masks cost $4.35 each. How m
Mila [183]
The clown earned$104.75
4 0
3 years ago
Can someone please help
blagie [28]

Answer:

Which one

Step-by-step explanation:

8 0
3 years ago
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