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3 years ago

Work out the percentage change to 2 decimal places when a price of £12 is increased to £15.99

Mathematics

1 answer:

NISA [10]3 years ago

6 0

Hence, the percentage increment is 33.25%

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High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The engineers

Maurinko [17]

Answer:

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(536.46, 603.54)

Step-by-step explanation:

Step:-1

Given that the mean of the Population = 540HP

Given that the size of the sample 'n' = 9

Given that the mean of the sample = 570HP

Given that the sample standard deviation = 30HP

Step(ii):-

Degrees of freedom = n-1 =9-1 =8

t₀.₀₀₅ = 3.3554

The 99% of a confidence interval for the average maximum HP for the experimental engine.

$(x^{-} - t_{\frac{0.01}{2} ,8} \frac{S.D}{\sqrt{n} } ,x^{2} + t_{\frac{0.01}{2},8 } \frac{S.D}{\sqrt{n} } )$

$(570-3.354\frac{30}{\sqrt{9} } , 570+3.354\frac{30}{\sqrt{9} } )$

(570 - 33.54 , 570+33.54)

(536.46 , 603.54)

Final answer :-

The 99% of a confidence interval for the average maximum HP for the experimental engine.

(536.46, 603.54)

4 0

3 years ago

Use two unit multipliers to convert 135 square miles to square feet

Inessa [10]

You only need one of them:

   (135 mile²) x (5,280 feet/mile)²

   = (135 mile²) x (27,878,400 feet²/mile²)

   = (135 x 27,878,400) mile² - feet² / mile²

   = 3,763,584,000 feet²

5 0

3 years ago

Cheryl uses the graph below to convert x, a measurement give to y, the equivalent measurement in another unit. Which of the foll

Salsk061 [2.6K]

Where's the graph? If you can give me the graph then I'd be able to answer for you.

4 0

3 years ago

Which one ????????????????????

olga55 [171]

Answer:

A. The first one

Step-by-step explanation:

Because it has a negative slope and if you follow the line you can tell it has a slope of -1/4.

5 0

2 years ago

Read 2 more answers

What is 3 ÷ 2\5 pls answer dis

Anna35 [415]

Answer:

15/2

Step-by-step explanation:

when dividing by fractions, we "flip and multiply"-- therefore:

3 ÷ 2\5 = 3 x 5/2

3 x 5/2 = 15/2

7 0

2 years ago