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aliina [53]
3 years ago
10

Tables A telephone exchange operator assumes that 8%8% of the phone calls are wrong numbers. If the operator is correct, what is

the probability that the proportion of wrong numbers in a sample of 535535 phone calls would differ from the population proportion by more than 3%3%
Mathematics
1 answer:
Ugo [173]3 years ago
7 0

Answer:

0,375

Step-by-step explanation:

Divide de 3 percent from 8 percent den u get your answer

Pleasure helping you, hope it was helpful

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If a cone has a volume of 60pi cubic meters then what is the radius, height, and diameter
algol [13]

Answer:

60pi = ⅓ × pi × r² × h

180 = r²h

Assuming r and h are whole numbers,

r = 3 m , h = 180/3² = 20 m

Diameter = 6 m

Or,

r = 6 m, h = 180/6² = 5 m

Diameter = 12 m

8 0
3 years ago
Read 2 more answers
First determine the missing angle for triangle 1 and triangle 2. Then apply the angle-angle criterion to determine if the two tr
barxatty [35]

Answer:

  • Triangle 1 – ∠1 = 25°, ∠2 = 115° Triangle 2 – ∠1 = 25°, ∠3 = 40°
  • Triangle 1 – ∠1 = 5°, ∠2 = 15° Triangle 2 – ∠2 = 15°, ∠3 = 160°

Step-by-step explanation:

You can save yourself some trouble if you realize that one of the angles in one pair must match one of the angles in the other pair.

This observation eliminates the first two choices.

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Going further, the triangles will be similar if the dissimilar angles together with one of the similar angles totals 180°.

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Triangle 1 – ∠1 = 50°, ∠2 = 30°

Triangle 2 – ∠2 = 20°, ∠3 = 100°  . . . . . no angles match

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Triangle 1 – ∠1 = 60°, ∠2 = 20°

Triangle 2 – ∠1 = 40°, ∠3 = 100°  . . . . . no angles match

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Triangle 1 – ∠1 = 25°, ∠2 = 115°

Triangle 2 – ∠1 = 25°, ∠3 = 40° . . . . 25° angles match; 25+40+115 = 180

These triangles are similar.

__

Triangle 1 – ∠1 = 5°, ∠2 = 15°

Triangle 2 – ∠2 = 15°, ∠3 = 160° . . . . 15° angles match; 15+5+160 = 180

These triangles are similar.

7 0
2 years ago
0.9&lt;2x-0.7&lt;1.5<br><img src="https://tex.z-dn.net/?f=0.9%20%3C%202x%20-%200.7%20%3C%201.5" id="TexFormula1" title="0.9 &lt;
Nitella [24]

Answer:

0.8<x<1.1

Step-by-step explanation:

Take 0.9<2x-0.7<1.5 add everything by 0.7 to get 1.6<2x<2.2 then divide everything by 2 to get 0.8<x<1.1

3 0
3 years ago
Which of the following has the lower unit rate?<br><br> $$$$$$$$$$$$$$$$$$$$
olga55 [171]

Answer:

Options?

Step-by-step explanation:

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2 years ago
Colin walked a distance of 15 miles in 6 hours. <br> Work out out
butalik [34]

Answer:

Colin walked 2.5 miles every hour

Step-by-step explanation:

The answer is 2.5 because 15 divided by 6 is 2.5

P.S Can I have brainliest?

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2 years ago
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