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nika2105 [10]
3 years ago
8

The dimensions of a triangular prism are shown in the diagram.

Mathematics
1 answer:
Dominik [7]3 years ago
7 0

the answer is :c

hope this helps

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Multiply the decimal numbers 37.4 x 2.2 =
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Basically you multiply like normal and then add in the decimal point (to figure out where it goes count how many numbers are behind the decimal (in this case 2) and then count that many places from the right into your answer and that's where it goes). So here 374 x22 =8228 but when you add in the decimal you get 82.28 :)
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The electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kWh per day. A
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Answer: (14.4, 17.2)

Step-by-step explanation: We are to construct a 98% confidence interval for mean household usage of electricity.

We have been given that

Sample size (n) = 872

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Population standard deviation (σ) = 1.8

The formulae that defines the 98% confidence interval for mean is given below as

u = x + Zα/2 × σ/√n...... For the upper limit

u = x - Zα/2 × σ/√n...... For the lower limit

Zα/2 = critical value for a 2% level of significance in a two tailed test = 2.33

By substituting the parameters we have that

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u = 15.8 + 2.33 × (1.8/√872)

u = 15.8 + 2.33 (0.6096)

u = 15.8 + 1.4203

u = 17.2

For lower tailed

u = 15.8 - 2.33 × (1.8/√872)

u = 15.8 - 2.33 (0.6096)

u = 15.8 - 1.4203

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3 years ago
A car has a mass of 2400 kg, correct to the nearest hundred kilograms.
erma4kov [3.2K]

Answer:

3805kg

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2400 ≥ 2350

1460 ≥ 1455

2400 + 1460≥ 2350 + 1455 = 3805

The lower bound is 3805kg

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2 years ago
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