2 years ago

Converting 52.68 feet per hour into inches per minute

Mathematics

1 answer:

yaroslaw [1]2 years ago

7 0

10.536 inches per minute

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MICHAEL and Kevin are running. Kevin gets a 3 mile head start and runs at a rate of 5.5 miles per hour. Michael runs at a rate

dlinn [17]

5.5x + 3 = y
7x =y

5.5x + 3 = 7x (-5.5x both sides)

3 = 1.5x (÷1.5 both sides)

X = 2

Michael takes two hours

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2 years ago

Diego can type 140 in 4 minutes

oksano4ka [1.4K]

Answer:

11 min and 525 words

Step-by-step explanation:

I put 140 words/ 4 mins and simplified it to 35 words /1 min

Doing so i plug in what was given and used cross multiply and divid :D

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Im so confused rn i have no idea how to do this my teacher didnt teach us this

dimulka [17.4K]

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2 years ago

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Suppose that in a random selection of 100 colored candies, 26% of them are blue. The candy company claims that the percentage

quester [9]

Answer: a) -0.2252, b) 0.8219

Step-by-step explanation:

Since we have given that

Sample size n = 100

Probability that candies are blue = p= 0.26

Probability that company claims that it is blue candy = P = 0.27

So, Q = 1-P= 1-0.27 = 0.73

So, Null hypothesis : $H_0:p=P$

Alternate hypothesis : $H_1:p\neq P$

So, the test statistic would be

$z=\dfrac{p-P}{\sqrt{\dfrac{P.Q}{n}}}\\\\z=\dfrac{0.26-0.27}{\sqrt{\dfrac{0.27\times 0.73}{100}}}\\\\z=-0.2252$

Since α = 0.05

So, critical value of z = 1.96

p-value = P(Z>Z(calculated)

Using the excel function , we get that

$P(z>0.2252)\\\\=2\times 0.410.911845\\\\=0.8219$

Hence, a) -0.2252, b) 0.8219

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2 years ago

What is the value of (-7+3i)-(2-6i)?

IRISSAK [1]

The answer is -9 + 9i. Hope this helped.

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3 years ago

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