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olya-2409 [2.1K]
3 years ago
5

What is the difference between -4=7 vs 5=5

Mathematics
1 answer:
KiRa [710]3 years ago
3 0

Answer:

{-4 = 7, 5 = 5} = {False, True}

Step-by-step explanation:

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The slope intercept form of (-4, 8) and (9, 8)
Black_prince [1.1K]

Step 1: Find the slope

(y-y)/(x-x) = (8-8)/(9+4) = 0

Step 2: Substitute into the slope intercept equation

y - y = m(x - x)

y - 8 = 0(x - 9)

If the problem just wants plain, slope intercept form, then this is your answer.

If not, y = 8

3 0
3 years ago
Hello santiago <br><br><br>are you there?<br><br><br>45+67×56​
Lerok [7]

Answer:

45+67×56=37,565

Step-by-step explanation:

i hope it helps you

7 0
2 years ago
Read 2 more answers
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate
Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

\sigma^2 = 484\\\sigma =\sqrt{484} = 22

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get

E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0
2 years ago
-4b - 5 + 2b =10. Can I have some help solving this.
kramer

Answer:

-7.5

Step-by-step explanation:

Simplify

-4b - 5 + 2b = 10

-2b - 5 = 10

-2b = 15

b = -7.5

5 0
3 years ago
Read 2 more answers
8.2<br> 5. In a '70% off' sale, a hat was £33.60.<br> Work out the original price.
Aleks [24]

100% - 70% = 30%

30% of what = £33.60?

Let p = original price

0.30p = 33.60

p = 33.60 ÷ 0.30

p = £112

3 0
3 years ago
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