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SVEN [57.7K]
3 years ago
14

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:

0

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

11

8 0
3 years ago
Read 2 more answers
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