3 years ago

4=2/7x please helppp

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

8 0

Answer: x=14

Step-by-step explanation:

1. Isolate x. Multiply both sides by 7. You should get 28=2x.

2. Divide each side by 2. You should then get 14=x.

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Solve for x.

Scorpion4ik [409]

Answer:

x = 4.3588989435406

I hope it's helps you

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2 years ago

The shape of the distribution of the time required to get an oil change at a 10 minute oil change facility is unknown. However,

lyudmila [28]

Answer:

The answer is below

Step-by-step explanation:

a) For a normal model the sample size has to be equal or greater than 30 so that it can be a normal distribution.

b) Given that:

μ = 11.2 minutes, σ = 4.8 minutes, n = 45

The z score determines how many standard deviations the raw score is above or below the mean. It is given by:

$z=\frac{x-\mu}{\sigma} \\For\ a\ sample\ size(n)\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

For x < 10 minutes

$z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\ z=\frac{10-11.2}{4.8/\sqrt{45} }= -1.68$

Therefore from the normal distribution table, P(x < 10) = P(z < -1.68) = 0.0465

7 0

3 years ago

Help please I don't know what to do plz just send the answers because I'm tired and I cba to do calculations

Lyrx [107]

Answer is A
Just make sure you do know how to do them :)

4 0

3 years ago

Convert the mixed number to an improper fraction. 2 7/10 A.14/10 B.27/10 C.34/10 D.37/10

boyakko [2]

So, to make a mixed number into an improper fraction, you have to multiply the whole number by the denominator and then add the numerator o that number.
2 and 7/10:
2x10=20+7=27/10!
<u>The answer would be B!</u>
I hope this helps!

7 0

3 years ago

Read 2 more answers

Sheriff raises is 2 ft wide 6 ft long 2 ft deep what is the volume of her freezer

USPshnik [31]

Answer:24sq.ft.

Step-by-step explanation: v=6*2*2

6×2=12

12×2=24sq.ft.

5 0

3 years ago