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4 years ago

What is 871 rounded to the nearest ten

2 answers:

7 0

871 rounded is; 870.
When you round; you round down if the last digit is under 5. But if it is 5 or above you round up.

This obviously doesn't apply if you are using significant figures.

Hope this helped :)

goblinko [34]4 years ago

4 0

870 is the answer. when rounding ask yourself whats the number before.
If it's a 1 thru a 4 you round down. If it's 5 trhu 9 you round up.

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The GCF of seven and 21 is

iris [78.8K]

Answer: gcf is 7

Step-by-step explanation:

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3 years ago

Suppose you toss a quarter, a dime and a nickel. Find the sample for all the possible ways the three poins and (heads, tails)

Katarina [22]

The answer is 24 but i am not sure for the sample

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3 years ago

The administrator of a nursing home would like to do a time-and-motion study of staff time spend per day performing nonemergency

WINSTONCH [101]

Answer:

32 days must be sampled to test the proposed hypothesis.

Step-by-step explanation:

Consider the provided information.

The average number of person-hours per day spent on these task was $\mu_0=16$ .

The actual value of μ is 12 hours or less i.e μ=12

She wants a test having α=0.05

The probability of a type II error of at most β=0.10 and σ=7.64.

δ = μ-μ0

= 12-16

= -4

Now use the formula for calculating the sample size:

$N=\frac{(Z_{\alpha}+Z_{\beta})^2\sigma^2}{\delta^2}$

Substitute the respective values.

$N=\frac{(Z_{0.05}+Z_{0.1})^2(7.64)^2}{(-4)^2}$

$N=\frac{(1.6449+1.2816)^2(7.64)^2}{16}$

$N=31.2437958482\approx 32$

Hence, 32 days must be sampled to test the proposed hypothesis.

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3 years ago

From measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 μm2. Convert the area into squa

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So the problem ask to find and convert the area into square meters. So to convert is you must do the cross multiplication process that could cancel out unit and made the answer into a square meter, so the answer would be 1. x10^-12m^2. I hope you are satisfied with my answer and feel free to ask for more

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3 years ago

Which of the following is the correct ratio for converting kilograms to grams

Brrunno [24]

Answer:

1000 Grams : 1 Kilogram or 1 Kilogram : 1000 Grams

Step-by-step explanation:

In the metric system the value of a kilogram is solved like:

$Kg = \frac{g}{1000}$

When converting from grams to kilograms, we solve it like:

$g = \frac{kg}{0.0010000}$

Let's take for example:

2 KG is how many grams?

We use the grams to kilograms formula like so:

$g = \frac{2}{0.0010000}$

Then we end up with:

g = 2000

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4 years ago