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3 years ago

If each quadrilateral below is a rectangle find the missing measure in #5

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

7 0

Answer:

What do you mean by #5?

Step-by-step explanation:

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Evaluate 0 × |-6|. ......

kupik [55]

Answer:

Step-by-step explanation:

Any value multiplied by zero equals zero , thus

0 × | - 6 | = 0

6 0

3 years ago

(17+4) + 9 = 17 + (4+9)

valina [46]

That's the associative property of addition

it is normally written as
(a+b)+c=a+(b+c)
which is like what you have
(17+4)+9=17+(4+9)

6 0

3 years ago

You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you beli

zhuklara [117]

Answer:

We need to sample at least 1069 parents.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many parents do you have to sample?

We need to sample at least n parents.

n is found when $M = 4, \sigma = 79.5$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$4 = 1.645*\frac{79.5}{\sqrt{n}}$

$4\sqrt{n} = 1.645*79.5$

$\sqrt{n} = \frac{1.645*79.5}{4}$

$(\sqrt{n})^{2} = (\frac{1.645*79.5}{4})^{2}$

$n = 1068.92$

Rounding up

We need to sample at least 1069 parents.

6 0

3 years ago

Read 2 more answers

P is inversely proportional to V.<br> When V = 8, P = 5<br> Find a formula for Pin terms of V.

AveGali [126]

Answer:

P = $\frac{40}{V}$

Step-by-step explanation:

given P is inversely proportional to V then the equation relating them is

P = $\frac{k}{V}$

to find k use the condition when V = 8 , P = 5 , then

5 = $\frac{k}{8}$ ( multiply both sides by 8 to clear the fraction )

40 = k

P = $\frac{40}{V}$ ← equation of proportion

6 0

2 years ago

Read 2 more answers

1+1^22+9^1=?<br> Please help!

german

1+1^22+9^1=?

1^22 = 1

9^1 =9

1 + 1 + 9

8 0

3 years ago

Read 2 more answers