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Dahasolnce [82]
2 years ago
13

The marked price of a textbook is $20. A school is given a 6.5% discount. Find the amount of money the

Mathematics
2 answers:
ladessa [460]2 years ago
6 0
6.5% of 20 is 1.3
20-1.3 = 18.7 (new price with discount)

18.7x200 = $3740
joja [24]2 years ago
4 0
7 times200=1,400 that’s your answer to your problem
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What is 2,605 rounded to the nearest hundred
AveGali [126]
2,600 is the answer to your question
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3 years ago
A basketball player has made​ 70% of his foul shots during the season. If he shoots 3 foul shots in​ tonight's game, what is the
yulyashka [42]

Answer:

There is a 34.3% probability that he makes all of the​ shots.

Step-by-step explanation:

For each foul shot that he takes during the game, there are only two possible outcomes. Either he makes it, or he misses. This means that we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 3, p = 0.7

What is the probability that he makes all of the​ shots?

This is P(X = 3).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{3,3}.(0.7)^{3}.(0.3)^{0} = 0.343

There is a 34.3% probability that he makes all of the​ shots.

7 0
3 years ago
Martha earned $180 during the summer doing chores. She bought 3 books worth $14 each using her chore money. How much money was l
Viktor [21]

Answer:

$138

Step-by-step explanation:

We can first turn the words into a mathematical equation by substituting words with the information we have:

Total earning - ( Price of three books)

$180 - (Price of one book x 3)

$180 - ($14 x 3)

Finally, after we have created the mathematical equation, we solve it!

$180 - ($14 x 3)

$180 - $42

$138

6 0
2 years ago
What is the probability that a data value in a normal distribution is between a z-score of -1.32 and a z-score of -0.3? round yo
elena55 [62]

Answer:

A

Step-by-step explanation:

Use the table of Z-score, considering it represnts the probability of data to the left of Z-value, the needed probability would be the subtraction of Z -0.3 to Z -1.32 value.

38.209% - 9.342% =29.867%

The neaerest answer is A

4 0
2 years ago
Is the square root of 23 rational or irrational
skelet666 [1.2K]
It is irrational because it’s not terminating (please hit “thanks”
3 0
2 years ago
Read 2 more answers
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