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hodyreva [135]
3 years ago
11

Help, please

Mathematics
1 answer:
Elanso [62]3 years ago
5 0

Answer: 10.5 is my guess

Step-by-step explanation:

1. 30% = 8.4

   100      x

cross multiply

30(x) = 840

divide both sides by 30 = 28

2. 37.5% = y

     100     28

cross multiply

1050 = 100y

divide both sides by 100 = 10.5

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Answer:

The correct options are a and b.

Step-by-step explanation:

It is given that triangle ABC with segment AD drawn from vertex A and intersecting side BC.

Two triangle are called similar triangle if their corresponding sides are proportional or the corresponding interior angle are same.

To prove ΔABC and ΔDBA are similar, we have to prove that corresponding interior angles of both triangle as same.

If segment AD is an altitude of ΔABC, then angle ADB is a right angle.

\angle BDA=90^{\circ}

The opposite angle of hypotenuse is right angle. If segment CB is a hypotenuse, then angle ABC is a right angle.

\angle BAC=90^{\circ}

In triangle ΔABC and ΔDBA

\angle ABC\cong \angle DBA              (Reflexive property)

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3 0
3 years ago
Read 2 more answers
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3 years ago
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Consider the probability that greater than 77 out of 131 computers will crash in a day. Assume the probability that a given comp
sweet-ann [11.9K]

Answer:

A Normal approximation to binomial cannot be applied to approximate the distribution of <em>X</em>, the number of computer crashes in a day.

Step-by-step explanation:

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The probability of a computer crashing in a day is, <em>p </em>= 0.99.

A random sample of <em>n</em> = 131 is selected.

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The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 131 and <em>p</em> = 0.99.

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The second condition is not fulfilled.

A Normal approximation to binomial cannot be applied to approximate the distribution of <em>X</em>, the number of computer crashes in a day.

6 0
3 years ago
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kompoz [17]

Answer:

1.5 in ^3

Step-by-step explanation:

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3 years ago
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