All categories

3 years ago

Bonus: Find the value of x.

Mathematics

1 answer:

Mars2501 [29]3 years ago

6 0

Answer:

12 (i think)

Step-by-step explanation:

so you see the problem the first problem is 3x-9. and you see 27

then you multiply 12 by 3 and you get 36 then you minus 36 by 9 and you get 27

You might be interested in

The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand

alexira [117]

Answer:

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

t = 1.076

Step-by-step explanation:

Step(i):-

Given Mean of the Population (μ) = 8.0

Mean of the sample (x⁻) = 8.25

Given data

8,9,9,8,8,9,8,7

Given sample size n= 8

Given sample standard deviation(S) = 0.661

Step(ii):-

Null hypothesis : H: (μ) = 8.0

Alternative Hypothesis :H:(μ) > 8.0

Degrees of freedom = n-1 = 8-1=7

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }$

t = 1.076

Critical value

t₍₇,₀.₀₅₎ = 2.3646

The calculated value t = 1.076 < 2.3646 at 0.05 level of significance

Null hypothesis is accepted

Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0

3 0

3 years ago

Which set of shapes appear to be similar? (Answers in picture)

12345 [234]

Answer: D

Step-by-step explanation: The Right Shape On D Is Just Smaller Than The Left One

8 0

3 years ago

In what year will the two quantities be equal?

Galina-37 [17]

Its the second because i did this already

3 0

3 years ago

Are all checking accounts the same at all banks? Explain.

Wittaler [7]

Answer:

Step-by-step explanation: They are not because different banks have different interest rates on accounts, different fees and more

6 0

3 years ago

How many times can 15 go into 75

Anestetic [448]

It goes into 5 times hope you enjoy

5 0

3 years ago

Read 2 more answers