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VashaNatasha [74]
3 years ago
13

An item is regularly priced at $35 . it is on sale for 80% off the regular price. how much (in dollars) is discounted from the r

egular price?
Mathematics
1 answer:
skad [1K]3 years ago
4 0
28$ is discounted off the original price.
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The height of a certain banner is equal to one third of its length. If the banner is 5 feet tall, write an equation that can be
Deffense [45]

Answer: the banner has a height of 1.6

Step-by-step explanation:

5 divided by 3

4 0
4 years ago
Perform the indicated operation and simplify the result 4x^3/3×(9/x)^3
STatiana [176]
The first thing we are going to do for this case is to rewrite the function correctly.
 We have then:
 \frac{4x^3}{3} *  (\frac{9}{x})^3
 For power properties we have:
 \frac{4x^3}{3} * \frac{9^3}{x^3}
 Canceling similar terms we have:
 \frac{4*9^3}{3}
 Doing the calculations we have:
 972
 Answer:
 
The result of the expression is:
 
A 972
4 0
4 years ago
a test consists of 10 multiple choice . to pass the test a student must answer exactly 5 of the questions correctly. if a studen
s2008m [1.1K]

Complete question :

A test consists of 10 multiple choice questions. Each question has 5 choices. To pass the test, a student must answer at least 6 questions correctly. If a student guesses on each question, the probability of getting it right is 20%. What is the probability that the student will pass the test?

Answer:

0.006370

Step-by-step explanation:

Number of options = 5, with only one correct,hence, p = 1/5 = 0.2

Number of questions = 10

Number of correct answers required to pass = 6

Using binomial distribution formula :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

p = 0.2 ; 1 - 0.2 = 0.8

n = 10 ; x = 6

P(x ≥ 6) = p(6) + p(7) + p(8) + p(9) + p(10)

The formula above can be used to obtain the individual probabilities then taking the sum or we can obtain the solution using a calculator ;

Using a binomial probability distribution calculator with the parameters given :

P(x ≥ 6) = 0.0063693824

= 0.006370 ( 4 decimal places)

3 0
3 years ago
Subtract. Write your answer in simplest form. 8 7/10- 3 4/10
Misha Larkins [42]

Answer:

Exact form: 53/10 , Decimal form: 5.3 , Mixed number form: 5 3/10

Step-by-step explanation:

7 0
3 years ago
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How long did it take each time 18 liters of water were drained?
kolbaska11 [484]

Answer: 1/4 minutes

Step-by-step explanation:

8 0
3 years ago
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