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3 years ago

I'm so confused please help

Mathematics

2 answers:

vova2212 [387]3 years ago

7 0

Answer:

Step-by-step explanation:

Blizzard [7]3 years ago

7 0

Answer:

What do you need help with

Step-by-step explanation:

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Pls help me and thank you!

Rudik [331]

Answer : -3/4 ..............

6 0

3 years ago

Which is greater, 35% of 60 or 30% of 80?

lara [203]

35% of 60 = (35/100)*60 = 0.35 * 60 = 21

30% of 80 = (30/100)*80 = 0.30 * 80 = 24

24 is greater than 21.

30% of 80 is greater.

8 0

3 years ago

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What is W when 4w-18>10

Degger [83]

Answer:

Inequality of W would be w>7

Step-by-step explanation:

Isolate the variable by dividing each side by factors that do not contain the variable. Hope this helps.

4w-18>10

4w>28 [Moved +18 over]

4w>7 [28 divided by 4]

8 0

3 years ago

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Suppose a simple random sample of size nequals36 is obtained from a population with mu equals 74 and sigma equals 6. (a) Descri

OlgaM077 [116]

Part a)

The simple random sample of size n=36 is obtained from a population with

$\mu = 74$

and

$\sigma = 6$

The sampling distribution of the sample means has a mean that is equal to mean of the population the sample has been drawn from.

Therefore the sampling distribution has a mean of

$\mu = 74$

The standard error of the means becomes the standard deviation of the sampling distribution.

$\sigma_ { \bar X } = \frac{ \sigma}{ \sqrt{n} } \\ \sigma_ { \bar X } = \frac{ 6}{ \sqrt{36} } = 1$

Part b) We want to find

$P(\bar X \:>\:75.9)$

We need to convert to z-score.

$P(\bar X \:>\:75.9) = P(z \:>\: \frac{75.9 - 74}{1} ) \\ = P(z \:>\: \frac{75.9 - 74}{1} ) \\ = P(z \:>\: 1.9) \\ = 0.0287$

Part c)

We want to find

$P(\bar X \: < \:71.95)$

We convert to z-score and use the normal distribution table to find the corresponding area.

$P(\bar X \: < \:71.95) = P(z \: < \: \frac{71.9 5- 74}{1} ) \\ = P(z \: < \: \frac{71.9 5- 74}{1} ) \\ = P(z \: < \: - 2.05) \\ = 0.0202$

Part d)

We want to find :

$P(73\:$

We convert to z-scores and again use the standard normal distribution table.

$P( \frac{73 - 74}{1} \:< \: z$

5 0

3 years ago

3x + 2 = 2x + 6 Please hurry

telo118 [61]

Answer:

Solve for x by simplifying both sides of the equation, then isolating the variable.

x = 4

Step-by-step explanation:

I hope this helps! Have a good day!

3 0

3 years ago

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