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2 years ago

Convert 100 inches per minute to feet per hour?

1 answer:

8 0

100 inches per minute
There are 60 minutes per hour so
100 inches per minute equals
6,000 inches per hour
there are 12 inches per foot so that converts to
500 feet per hour

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Julie built a tower of blocks that stood 22.5 cm tall. Each block is 1.5 cm tall.

Pavel [41]

We must divide the total height by the size of the blocks to work out how many are in the tower
22.5 / 1.5 = 15 blocks

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3 years ago

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drug sniffing dogs must be 95% accurate in their responses because their handlers don't want them to miss durgs and also don't w

GenaCL600 [577]

Answer:

95% Confidence interval: (0.8449,0.9951)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Number of times the dog is right, x = 46

$\hat{p} = \dfrac{x}{n} = \dfrac{46}{50} = 0.92$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.92 \pm 1.96(\sqrt{\dfrac{0.92(1-0.92)}{50}})\\\\ = 0.92\pm 0.0751\\\\=(0.8449,0.9951)$

(0.8449,0.9951) is the required 95% confidence interval for the proportion of times the dog will be correct.

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2 years ago

Please help me now please

Feliz [49]

Answer:

1 1/4

Step-by-step explanation:

turn the 2 into decimals and then subtract and you get 1.25 and that aa a fraction is 1 1/4

7 0

2 years ago

Factor. 2xy+5x−12y−30

worty [1.4K]

2xy + 5x -12y -30
x(2y + 5) - 6( 2y + 5)
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3 years ago

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4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?

ladessa [460]

Answer

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Step-by-step explanation:

Just plug in the numbers.

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3 years ago

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