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inna [77]
2 years ago
9

The number of students at Marita’s school decreased to 98% of last year’s number. Currently, there are 1,170 students. How many

students were there last year?
Mathematics
1 answer:
77julia77 [94]2 years ago
8 0

Answer:

  1194 students last year

Step-by-step explanation:

The problem statement tells us ...

  98% × (students last year) = 1170

Dividing by 98%, we get ...

  1170/0.98 = (students last year) = 1193.88 ≈ 1194

___

<em>Check</em>

1170/1194 = 0.979899... ≈ 0.98 = 98%

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When n = 3, which of the expressions below will be greater than 50? Select all that apply. A) (8n2÷9)⋅7 B) 2n2⋅3 –4n C) 4n2–6n+1
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Answer:

<u><em>A</em></u>

Step-by-step explanation:

<u>a)</u>

<u></u>(8(3)^{2} / 9) * 7<u></u>

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b)

2(3)^{2} * 3 - 4(3)

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5 0
3 years ago
Are:
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Step-by-step explanation:

a. The mean can be found using the AVERAGE() function.

x = 272.7

b. The standard deviation can be found with the STDEV() function.

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t = 2.162

d. Find the lower and upper ends of the confidence interval.

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3 years ago
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