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shutvik [7]
3 years ago
10

Help! Please I got till tomorrow

Mathematics
1 answer:
serious [3.7K]3 years ago
4 0

Answer:

6) Total number of students who took the test = 240

7) (2) 90% of the students who took the test ha scored equal or less Sal's score.

Step-by-step explanation:

<h3>6)</h3>

Formula to calculate 5th percentile

percentile = (# students who scored ≤ 60 / total number of students) * 100

5th  = 12/n * 100

5/100 = 12/n

0.05 = 12/n

n = 240

Total number of students who took the test = 240

<h3>7)</h3>

90th percentile means Sal scored better than 90% of people who took the test.

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Mars2501 [29]
M(Pb(C2H5)4 = M(PB)*1 + 4*( M(C)*2 + M(H)*5)
M(Pb(C2H5)4 = 207.2 + 4(12.0*2 + 1.0*5)
M(Pb(C2H5)4 = 207.2 + 4(28.0 + 5)
M(Pb(C2H5)4 = 207.2 + 4*33
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M(Pb(C2H5)4 = 339.2 g/mol

Hope this helps !

Photon

4 0
4 years ago
a customer purchases windows for $15,000 using a credit card. If the interest is compounded monthly at a rate of 16% per year, h
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Answer:

≈ $9164.35

Step-by-step explanation:

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A = 15000 (1+\frac{0.16}{12}) ^{(12(3))}

   = 15000 ((1.01333)^{36}

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7 0
3 years ago
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5 0
3 years ago
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zzz [600]

Answer:

\frac{17}{96}

Step-by-step explanation:

Given  m = - \frac{96}{17}

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Answer:

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Replacing with the real values, we have:

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