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3 years ago

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A football pitch ABCD is shown. The length of the pitch, AB = 120 m. The width of the pitch, BO = 90 m. A 120 m B 90 m D C Calcu

late the length of the diagonal BD. Give your answer to 1 decimal place.

1 answer:

Aliun [14]3 years ago

5 0

I hope this helps you feel free to contact me

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The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is

Irina-Kira [14]

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

χ2 = 84.410

df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

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3 years ago

At a pet store, 3/8 of the total animals were dogs. of those dogs 2/7 were labrador dogs. what fraction of the total pets were l

9966 [12]

Answer: 3/28

Step-by-step explanation:

Here we go, whenever you see the word "of" this mean to multiply

2/7 x 3/8 = 3/28

Answer: 3/28 .

I hope this help...

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3 years ago

Find the solution of the system of equations shown on the graph.

Digiron [165]

The answer for this question is Y=3x+1

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3 years ago

Suzanna uses a 1/4 cup measuring scoop to make her coffee. If she needs to fill her coffee filter with 2 cuos of coffe grounds,h

lilavasa [31]

Answer:

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Step-by-step explanation:

1/4 times 8 is 2

6 0

3 years ago

When h has a value 4,calculate 5h+7

Colt1911 [192]

If h=4, then 5(4)+7= 27. Using PEMDAS, do multiplication first, so 20, then add the 7.

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3 years ago

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