PLZZZ HELP ME 10 PTSS

Mathematics

2 answers:

Anestetic [448]3 years ago

5 0

Answer:

5 31/ 30 or 6 1/30

Step-by-step explanation:

I wish this helped you

Vilka [71]3 years ago

5 0

Answer:

D. 29

Step-by-step explanation:

First, let's make things a bit easier for ourselves and convert mixed numbers to improper fractions

$-\frac{10}{3}* -\frac{87}{10}$

Next, we check for numbers that can cancel out. In this case, we have 10.

$-\frac{1}{3}*-\frac{87}{1}$

Because negatives cancel out, we get

$\frac{87}{3}$

when we multiply.

Fractions just mean division, so we divide 87 by 3 and get

D. 29

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The variables y and x have a proportional relationship, and y = 7 when x = 2. What is the value of y when x = 5? Enter your answ

Vsevolod [243]

Answer:

17.5

Step-by-step explanation:

Given that the variables x and y have a proportional relationship.

i.e. y is directly proportional to x or can be written as

y = mx where m is the constant of proportionality.

When x =2, y =7

Substitute this to get the value of m.

7 =2m or m = 3.5

Thus the relationship between x and y is

y = 3.5x

So when x=5, y = 3.5(5) = 17.5

3 0

3 years ago

Determine

Luden [163]

Answer:

$\mu_{x} = 64, \sigma_{x} = 12.83$

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n of at least 30 can be approximated to a normal distribution with mean $\mu_{x} = \mu$ and standard deviation $\sigma_{x} = \frac{\sigma}{\sqrt{n}}$