3 years ago

Pls help me with this ASAP

Mathematics

1 answer:

Sladkaya [172]3 years ago

6 0

The answer is the first option, 3/1

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aleksandrvk [35]

Answer:

3,1

Step-by-step explanation:

(3+6)= 9

times 1 would also be 9.

4 0

2 years ago

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In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi

lana [24]

Answer:

Confidence interval: (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

$\bar{x} = 1858 \text{ kWh}$

Population standard deviation =

$\sigma = 450 \text{ kilowatt-hours}$

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

$\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

$1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)$

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3 years ago

Leona is having a birthday party on Sunday. Jeanette wants to know how many people will be coming. Leona tells her that there wi

konstantin123 [22]

Answer:77 and 87

Step-by-step explanation:

7×6=42 + 5+7=35/\ 35+42=77(first outcome)

7×6=42 + 5×9=45/\42+45=87 (second outcome.

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2 years ago

3 × 1 1/2 as a mixed number in simplest form

Anna11 [10]

Answer:

1.5 - 1 1/5 = 3

= 0.3

Step-by-step explanation:

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3 years ago

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Simplify the following expression.<br><br> 0.466 × 1.2

Ganezh [65]

Answer:

$0.466 \times 1.2 \\ \frac{699}{1250} \: \: or \: \: 0.55$

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2 years ago

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