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3 years ago

8

Please help me!! 1st question 9−32÷4 2nd question 108÷9⋅(−12)÷6−(100÷5) 3rd question 6 + 8 ÷ 2 4th question 40÷[24−4×(2+3)] 5th

question 3u+7v+4u−2v

1 answer:

erma4kov [3.2K]3 years ago

3 0

Answer:

1. 1

2. -44

3. 10

4. 10

5. 7u+5v

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Find the slope of the line passing through the points -8,8 and 7,8

avanturin [10]

Answer:

Slope =0

Step-by-step explanation:

Because the same Y value means they are level and not increasing in slope

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3 years ago

The following six independent length measurements were made (in feet) for a line: 736.352, 736.363, 736.375, 736.324, 736.358, a

horrorfan [7]

Answer:

Assuming population data

$\sigma = \sqrt{0.000354}=0.0188$

Assuming sample data

$s = \sqrt{0.000425}=0.0206$

Step-by-step explanation:

For this case we have the following data given:

736.352, 736.363, 736.375, 736.324, 736.358, and 736.383.

The first step in order to calculate the standard deviation is calculate the mean.

Assuming population data

$\mu = \frac{\sum_{i=1}^6 X_i}{6}$

The value for the mean would be:

$\mu = \frac{736.352+736.363+736.375+736.324+736.358+736.383}{6}=736.359$

And the population variance would be given by:

$\sigma^2 = \frac{\sum_{i=1}^6 (x_i-\bar x)}{6}$

And we got $\sigma^2 =0.000354$

And the deviation would be just the square root of the variance:

$\sigma = \sqrt{0.000354}=0.0188$

Assuming sample data

$\bar X = \frac{\sum_{i=1}^6 X_i}{6}$

The value for the mean would be:

$\bar X = \frac{736.352+736.363+736.375+736.324+736.358+736.383}{6}=736.359$

And the population variance would be given by:

$s^2 = \frac{\sum_{i=1}^6 (x_i-\bar x)}{6-1}$

And we got $s^2 =0.000425$

And the deviation would be just the square root of the variance:

$s = \sqrt{0.000425}=0.0206$

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3 years ago

How can estimating the quotient help you check that your answer to a division problem is reasonable?

neonofarm [45]

Explanation:

If your actual answer is very far from your estimate, you probably made a mistake somewhere.

__

<em>Additional comment</em>

50 years ago, when a slide rule was the only available calculation tool, making an estimate of the result was a required part of doing the calculation. Not only were the first one or two significant digits needed, but also the power of 10 that multiplied them. Use of a slide rule required the order of magnitude be computed separately (by hand) from the significant digits of the result.

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You may also find it useful to estimate the error in your estimate. That is, you may want to know the approximate answer to 2 (or more) significant digits in order to gain confidence that your calculation is correct.

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3 years ago

White blood cells, I Helper cells and antibodies are all a part

ioda

Answer:

D.)

Step-by-step explanation:

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3 years ago

Kara is 4 more than twice as old as Julia. The sum of their ages is 13. How old is Julia?

Thepotemich [5.8K]

Let julia's age be x
Let Kara's age be 4x
x+4x=13
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x=13/5
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4 years ago