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4 years ago

7

5 and below is having a discount sale for 8% off on all items. She wanted to get a shirt that was originally $25.00. How much wi

ll the discount sales price be?

2 answers:

leva [86]4 years ago

6 0

So

x/25 = 8/100

cross multiply

100x= 8•25

100x= 200

divide

100x/100= 200/100

x=2

so 25$ - 2$ = 23$

Lena [83]4 years ago

3 0

AnswerNaruto fan?

Step-by-step explanation:

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In what 3 forms can probability be written?

Romashka [77]

Answer:

unlikely,likely,and certain

Step-by-step explanation:

The probability of an event can only be between 0 and 1 and can also be written as a percentage. The probability of event A is often written as P ( A ) P(A) P(A)P, left parenthesis, A, right parenthesis.Probability. Probability is the likelihood or chance of an event occurring. For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½ .Examples of Probability. ... Probability can be expressed in a variety of ways including a mathematically formal way such as using percentages. It can also be expressed using vocabulary such as "unlikely," "likely," "certain," or "possible." Explore several probability examples.And an event is one or more outcomes of an experiment. Probability formula is the ratio of number of favorable outcomes to the total number of possible outcomes. Measures the likelihood of an event in the following way: - If P(A) > P(B) then event A is more likely to occur than event B.

Hope that was helpful.Thank you!!!

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3 years ago

PLEASE I NEED HELP!!! ITS DUE TONIGHT

Afina-wow [57]

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3 years ago

Researchers believe that 24.5% of the adults in the United States are obese. A Gallup poll examined the rate of obesity in Ameri

Setler79 [48]

Answer:

The p-value of the test is 0 < 0.05(standard significance level), which means that this is enough evidence to state that more than 24.5% of all adults in the U.S. are obese

Step-by-step explanation:

Researchers believe that 24.5% of the adults in the United States are obese. Test if there is enough evidence to state that more than 24.5% of all adults in the U.S. are obese.

At the null hypothesis, we test if the proportion is of 24.5% or less, that is:

$H_0: p \leq 0.245$

At the alternative hypothesis, we test if this proportion is greater than 24.5%, that is:

$H_1: p > 0.245$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.245 is tested at the null hypothesis:

This means that $\mu = 0.245, \sigma = \sqrt{0.245*0.755}$

Survey 86,664 randomly sampled U.S. adults. Of the adults surveyed, 23,053 said that they were obese.

This means that $n = 86664, X = \frac{23053}{86664} = 0.266$

Value of the test statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.266 - 0.245}{\frac{\sqrt{0.245*0.755}}{\sqrt{86664}}}$

$z = 14.37$

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion of 0.266 or higher, which is 1 subtracted by the p-value of z = 14.37.

The p-value of z = 14.37 is 1.

1 - 1 = 0

The p-value of the test is 0 < 0.05(standard significance level), which means that this is enough evidence to state that more than 24.5% of all adults in the U.S. are obese

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3 years ago

The histogram shows the ages of cars sold at a car auction.

BabaBlast [244]

Adding up all of the values in the histogram, there were 20 cars sold in total. Of those, 5 were under 20 years old and 3 were more over 40. That means that 8/20 of the cars fit the bill. Multiplying the numerator and denominator by 5, we find that 8/20 = 40/100, or 40%.

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3 years ago

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Pavlova-9 [17]

Answer:

Step-by-step explanation:

4. Nicole can make 7 quarts of lemonade with 10 cups of sugar.

If 3/4 cup of sugar is used to make 1 quart of lemonade and 10 cups of sugar are available, then you multiply 3 times 10 (when multiplying fractions, you only multiply with the numerator, not the denominator) which will give you 30.

Now, you can write it as 30/4. Using simple division, you find that 30/4 is 7.5 (or 7 and 1/2), and because we're trying to find how many full quarts we can make using 10 cups of sugar, your answer will be 7.

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In this problem, we have 6 people and we have to share 5 boxes of raisins among all of them. We know that each person can't get 1 because there would have to be 6 boxes (1 for each person), so we have a fraction (or decimal, depending on where you're at).

Dividing 5/6, you'll simply get 5/6 because you can't simply this any further, but if you were to write this as a fraction, you'd get 0.83 repeating (over the 3).

6. Each class will receive 30 boxes of cracker jacks.

We know that there are 153 boxes of cracker jacks available, and this needs to then be split among 5 different classes. So, to find the answer, we have to divide 153 by 5. In doing that, we get 30.6, but because we're trying to find the whole number that the classes will receive, as you can't get a fraction of a box (at least, I assume), then each class will get 30 with 3 boxes remaining.

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2 years ago