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Helga [31]
3 years ago
10

Please help anyone I am dumb and don’t know how to do percentages! And I have a quiz tomorrow on them!!! (a) 25% of 200 is what

number? (b) 200 is 25% of what number? (c) Express 2/25 as a decimal; as a percent. (d) Express 24% as a decimal; as a fraction.
Mathematics
2 answers:
Vitek1552 [10]3 years ago
7 0

Answer:

50

Step-by-step explanation:

First you must multiply the number by the percent, then divide by 100.

marusya05 [52]3 years ago
7 0

Answer:

To express a percentage to fraction, you simply divide the number by 100.

Example: 24% is 24/100

When they say "of" its means mutiple

Example: 25% of 200 is (25/100) × 200

When they already present the answer to you, you assume the number to be unknown and solve for it algebratically

Example: 200 is 25% of what number

So let the unknown number be n

Then 25% of n = 200

That is (25/100) × n = 200

Now you solve for n

To change a decimal to percent, you times it by 100 and round it to the nearest whole number

Example: 0.25 is 0.25 × 100 = 25%

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Answer:

Event is not unusual(p>0.05).

Step-by-step explanation:

Given that :

p=0.10\\\\n=1100\\\\x=121

#The sample proportion is calculated as:

\hat p=\frac{x}{n}\\\\=\frac{121}{1100}\\\\=0.1100

#Mathematically, the z-value is the value decreased by the mean then divided  the standard deviation :

z=\frac{\hat p- p}{\sqrt{\frac{p(1-p)}{n}}}\\\\\\\\=\frac{0.11-0.10}{\sqrt{\frac{0.10(1-0.10)}{1100}}}\\\\\\=1.1055

#We use the normal probability table to determine the corresponding probability;

P(X\geq 121)=P(Z>1.1055)\\\\=0.1314

Hence, the probaility is more than 0.05, thus the event not unusual  and thus  this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

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3 years ago
Y = -(x + 5)(x + 1)​
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Answer:

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Step-by-step explanation:

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3 years ago
As a medical examiner, you are asked for many reports related to types of death. You are initially asked for a report on the tem
iVinArrow [24]

The function is updated by calculating the composite function h(f(c)), where f = 1.8c + 32

<h3>How to update the function?</h3>

The function is given as h(c)

Where

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  • h(c) represents the number of heat-stroke deaths per thousand people

When a temperature in Celsius is converted to Fahrenheit, the conversion equation is:

F = 1.8C + 32

This means that we update the function by calculating the composite function h(f(c)), where f = 1.8c + 32

<h3>How the graph would be transformed?</h3>

In (a), we have:

h(f(c)) and f = 1.8c + 32

Substitute f = 1.8c + 32 in h(f(c))

h(1.8c + 32)

The above means that:

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Read more about function transformation at:

brainly.com/question/1548871

#SPJ1

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2 years ago
Dominic is designing a new board game, and is trying to figure out all the possible outcomes. How many different possible outcom
oksian1 [2.3K]

Answer:

If he spins a spinner with 5 equal sections they have equally likely probability of 20%

If he rolls a fair die in the shape of pyramid with 4 sides each side has probability of 25%

If he rolls a fair die in the shape of cube with 6 sides each side has probability of 16.7

Total number of outcomes = 5 * 6 * 4 = 120

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2 years ago
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The answer is C ! The total would be $59
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