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3 years ago

15

What is the probability that the mean time for the sample of 100 returns is between 88 minutes and 92 minutes?

1 answer:

mr Goodwill [35]3 years ago

4 0

A coin is flipped three times<span>; give the </span>probability<span> distribution of the number of heads. ... waiting to be served in a certain bank was counted every 15 </span>minutes<span> for five hours. ... 11) Suppose that the</span>probability<span> that a federal income tax </span>return<span> contains an .... 35) A certain </span>probability<span> distribution has</span>mean 100<span> and variance 5</span><span>.</span>

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In ΔCAB, if m∠A = 10x + 9, m∠B = 34°, and m∠C = 97°, what is the value of x?

Zolol [24]

<em>x = 4</em>

<em>Here is why:</em>

When adding up all angles of a triangle, they will be equal to 180.

Let's add ∠B and ∠C together.

$34+97=131$

Let's subtract it from 180, that will be the value of ∠A.

$180-131=49$

Now we can set ∠A equal to 49.

$10x+9=49$

Subtract 9 from both sides.

$10x=40$

Divide.

<u>x = 4</u>

7 0

3 years ago

Is 3(–2) + 7(2) equivalent to (–3)(–3) + (–1)(1)? Let negative numbers be represented with a "–" symbol and positive numbers be

jek_recluse [69]

3(-2) + 7(2) = 8
(-3)(-3) + (-1)(1) = 8
yes

3 0

3 years ago

Joaquin is thinking hard about equations and inequalities and comes up with this idea: If 45+15=t, then t=45+47. So, if 45+47

SOVA2 [1]

Answer:

That doesn't make sense, it's wrong. t=60 because 45+15=60

Step-by-step explanation:

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3 years ago

Brian has 14 bins and 70 books. He places the same number of books, x in each bin.

adelina 88 [10]

Answer:

14x=70

Step-by-step explanation:

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3 years ago

the moon is about 240,000 miles from earth what is this distance written as a hole number multplied by the power of ten

guajiro [1.7K]

2.4 to the 5th power of 10

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3 years ago