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pogonyaev
3 years ago
11

What is the percent of change if 20 is increased to 25?

Mathematics
2 answers:
natima [27]3 years ago
6 0
That would be 25%

that is because 5 is 25% of 20

Hope this helps!
aniked [119]3 years ago
4 0
Since 25 is 5 more than 20,
and 5 is 1/4 of 20,
1/4 is 25%,
so the percent of change from 20 to 25 is 25%

Hope this helps :)
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The probabilty that a student owns a car is 0.65 the porbability that a student owns a compuer is 0.82 the probability that a st
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Question:  The probability that s student owns a car is 0.65, and the probability that a student owns a computer is 0.82.

a. If the probability that a student owns both is 0.55, what is the probability that a randomly selected student owns a car or computer?

b. What is the probability that a randomly selected student does not own a car or computer?

Answer:

(a) 0.92

(b) 0.08

Step-by-step explanation:

(a)

Applying

Pr(A or B) = Pr(A) + Pr(B) – Pr(A and B)................. Equation 1

Where A represent Car, B represent Computer.

From the question,

Pr(A) = 0.65, Pr(B) = 0.82, Pr(A and B) = 0.55

Substitute these values into equation 1

Pr(A or B) = 0.65+0.82-0.55

Pr(A or B) = 1.47-0.55

Pr(A or B) = 0.92.

Hence the probability that a student selected randomly owns a house or a car is 0.92

(b)

Applying

Pr(A or B) = 1 – Pr(not-A and not-B)

Pr(not-A and not-B) = 1-Pr(A or B) ..................... Equation 2

Given: Pr(A or B)  = 0.92

Substitute these value into equation 2

Pr(not-A and not-B) = 1-0.92

Pr(not-A and not-B) = 0.08

Hence the probability that a student selected randomly does not own a car or a computer is 0.08

8 0
2 years ago
An apple farmer has planted 0.3 of his orchard with cherry trees. The orchard is 8.59 acres in size. How many acres are planted
Lynna [10]
0.3(8.59) = 2.577 rounds to 2.58 acres
6 0
3 years ago
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