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4 years ago

Round 9.88930605114 to the nearest ten-thousand

Mathematics

2 answers:

vlabodo [156]4 years ago

8 0

Answer:

It is 9.8893

Step-by-step explanation:

user100 [1]4 years ago

5 0

Answer:

9.8893

Step-by-step explanation:

the ten thousands place is where the 3 is and in order to tell whether to round that up to a 4 or keep it at a 3, you look at the place to the right (hundred thousandths place) and since the number is less than 5 you keep it as a 3.

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A ramp is in the shape of a triangular prism. The ramp and its net are shown below. What is the surface area of the ramp?

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Answer:

180 ft^2 (squared)

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3 years ago

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tankabanditka [31]

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3 years ago

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A plumber charges of fee of $75 to make a house call. He also charges $50 per hour for labor.

Hoochie [10]

Answer:

For part 1- y=50x+75 For part 2- y=325

Step-by-step explanation:

the cost is increasing 50 for every hour

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3 years ago

Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard d

Ostrovityanka [42]

The margin of error of the random selection is 0.29

The given parameters are:

$n = 320$ --- the sample size

$\sigma = 2.9$ --- the standard deviation

$\bar x = 24$ --- the mean

$\alpha = 90\%$ --- the confidence level.

The margin of error (E) is calculated as follows:

$E = z \times \sqrt{\frac{\sigma^2}{n}}$

So, we have:

$E = z \times \sqrt{\frac{3.2^2}{320}}$

$E = z \times \sqrt{\frac{10.24}{320}}$

The z-value for 90% confidence level is 1.645.

Substitute 1.645 for z

$E = 1.645 \times \sqrt{\frac{10.24}{320}}$

$E = 1.645 \times \sqrt{0.032}$

Take square roots

$E = 1.645 \times 0.1789$

Multiply

$E = 0.2943$

Approximate

$E = 0.29$

Hence, the margin of error is 0.29