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ICE Princess25 [194]
3 years ago
14

4. B А. Angle A is 135º. What is angle B? (show math and explain why)

Mathematics
1 answer:
ziro4ka [17]3 years ago
6 0
Where is the angle b???
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The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea
zheka24 [161]

Answer:

$301 - $397

Step-by-step explanation:

Using the Empirical rule

1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .

2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

3)99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .

From the above question,

Mean = 349 , standard deviation = 24.

Confidence interval = 95%

Using 2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

μ – 2σ

= 349 - 2(24)

= 349 - 48

= 301

μ + 2σ

349 + 2(24)

= 349 + 48

= 397

Therefore, according to the standard deviation rule, approximately 95% of the students spent between $301 and $397 on textbooks in a semester.

8 0
3 years ago
Mick paid 2.94 in sales tax on an item that cost $42.00 before tax.at that rate how much would he pay in sales tax for an item t
Soloha48 [4]
0ne dollars and forty- seven cents
4 0
3 years ago
A color printer prints 7 pages in 3 minutes.
mojhsa [17]

Answer:

2 pages per minute

Step-by-step explanation:

when you divide 7 by 3, your answer would be 2.3333333333 and so on.

however, you can say

iT pRiNtS 2 aNd A tHiRd pAgEs PeR MiNuTe.

you should say it prints 2 whole pages a minute.

i hope this helps!

stay safe!

:)

4 0
3 years ago
Tell whether each statement about the expression 5y + 9 is True or False.
pishuonlain [190]

Answer:

False.

Step-by-step explanation:

The number 5 IS a coefficient because it is the first number in the expression.

5 0
3 years ago
Gaus method to collect 1-100
jolli1 [7]

Answer:

5050

Step-by-step explanation:

S=n*(n+1) / 2

S=100 * (100+1) /2 = 50 * 101 = 5050

6 0
3 years ago
Read 2 more answers
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