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3 years ago

Write an equation to describe the relationship in each table

Mathematics

1 answer:

Yuri [45]3 years ago

5 0

Answer:

1: $y=x+6$

2 $y=\frac{1}{2}x$

Step-by-step explanation:

If I helped, a brainliest answer would be greatly appreciated!

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An engineer wants to know if the average amount of energy used in his factory per day has changed since last year. The factory u

m_a_m_a [10]

Answer:

The calculated value Z = 1.8823 <1.96 at 0.05 level of significance

The average amount of energy used in his factory per day has changed since last year.

Step-by-step explanation:

Step(i):-

Given that mean of the Population = 2000 (MWH)

Given that size of the sample 'n' = 400

Given that mean of sample x⁻ = 2040 MWH

Given that the standard deviation = 425 MWH per day

Step(ii):-

Null hypothesis:H₀: μ = 2000 (MWH)

Alternative Hypothesis:H₁: μ≠ 2000( MWH)

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{2040-2000}{\frac{425}{\sqrt{400} } }$

Z = 1.8823

The calculated value Z = 1.8823 <1.96 at 0.05 level of significance

Final answer:-

The calculated value Z = 1.8823 <1.96 at 0.05 level of significance

The average amount of energy used in his factory per day has changed since last year.

3 0

3 years ago

Find the missing length. Area=48cm

kogti [31]

Answer:

Hope this helps

Step-by-step explanation:

Area= 48

If a square= 6.928 by 6.928

If Circle = Radius :3.909

If rectangle = 12 by 4

3 0

3 years ago

15% of what number is 36

DedPeter [7]

15% of what number is 36

15% of 36=5.4

3 0

3 years ago

Read 2 more answers

What is the measure of angle ABC of a circle

RoseWind [281]

Answer:

the angle <ABC is equal to 65°

8 0

3 years ago

(-9) - 9n= (-45) please helpppp!

kozerog [31]

Answer: n=4

Step-by-step explanation:

$\left(-9\right)-9n=\left(-45\right)$

add 9 to both sides

$-9-9n+9=-45+9$

$-9n=-36$

divide both sides by -9

$n=4$

Brainliest please

8 0

3 years ago

Read 2 more answers