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marusya05 [52]
3 years ago
10

Thirty-nine and seventy-two hundredths in decimal point​

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
8 0

Answer:

39.72

Step-by-step explanation:

39 is the whole number and 72 is out of 100. the place values after the decimal are tenths hundredths and thousands

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four sisters bought a present for their grandfather that cost each sister $8. they recieved a 20% discount how much was the orig
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8x4=$32
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Subtract a plus 3 from 3a - 5
elena-s [515]
(3a-5)-(a+3)\\ 3a-4-a-3\\\\ 2a-7
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Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors
tino4ka555 [31]

Answer:

\chi^2 = \frac{(83-90)^2}{90} +\frac{(68-72)^2}{72}+\frac{(85-78)^2}{78}+\frac{(64-60)^2}{60} = 1.66

And the answer would be:

c. 1.66

Step-by-step explanation:

We need to conduct a chi square test

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

the observed values for this case are:

Freshemen=83

Sophomores=68

Juniors = 85

Seniors= 64

The expected values for this case are:

Fres_E =0.3*300= 90

Sop_E =0.24*300= 72

Jun_E = 0.26*300 =78

Sen_E = 0.20*300= 60

Then the statistic would be given by:

\chi^2 = \frac{(83-90)^2}{90} +\frac{(68-72)^2}{72}+\frac{(85-78)^2}{78}+\frac{(64-60)^2}{60} = 1.66

And the answer would be:

c. 1.66

4 0
4 years ago
Please help! im confused <br>​
anastassius [24]

Answer: Then dont get confused then you wont be confused

Step-by-step explanation:

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3 years ago
a cylindrical shaped container is 8 in. tall with a diameter of 6 in. How much water could this container hold?​
Marina86 [1]

Answer:

226.08 in

Step-by-step explanation:

To find how much water this container can hold, we should find the volume of this container.

Volume of cylinder = πr²h

= 3.14 × 3² × 8           (r= d/2   => 6/2 = 3)

= 226.08 in

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3 years ago
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