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2 years ago

Are you good at maths?????????????????????????

Mathematics

1 answer:

Flauer [41]2 years ago

7 0

The probability that a student, chosen at random, does not study chemistry is 20/41.

<h3>What is Probability?</h3>

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.

Probability(Event) = Favorable Outcomes/Total Outcomes = x/n

Here, Total number of student = 41

Student who does not study chemistry = 20

So, the probability = favorable outcome / total outcomes

P(not studying chemistry) = 20 / 41

Thus, The probability that a student, chosen at random, does not study chemistry is 20/41.

Learn more about Probability from:

brainly.com/question/11234923

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If 2000 dollars is invested in a bank account at an interest rate of 6 percent per year, find the amount in the bank after 7 yea

AfilCa [17]

Answer:

$3007.26

Step-by-step explanation:

Step one:

given data

Principal= $2000

rate= 6%= 0.06

time= 7years

Required:

The final amount A

Step two:

the expression for the compound interest is

$A= P(1+r)^t$

substituting we have

$A= 2000(1+0.06)^7\\\\A= 2000(1.06)^7\\\\A=2000*1.50363\\\\A=3007.26$

6 0

3 years ago

Which graph shows the image of the triangle reflected across the line of reflection shown I can’t post the choices but if you’ve

Naya [18.7K]

Answer:

Here we have to find the distance of the points from the mirror, and then plot it on the other side of the mirror.

Step-by-step explanation:

⇒Here the x-coordinate will not change

the point(4,2)is one unit far from the mirror. then we will plot it on the other side of the mirror which is (4,4)

we will do same with the other two points.

here are the changes:

(4,2)⇒(4,4)

(2,4)⇒(2,2)

(9,6)⇒(9,0)

then join the new points.

Hope it helps!

8 1

4 years ago

Brian can run 5 km in 18.4 minutes. If he keeps on running at the same speed, how far can he run in 23 minutes?

valina [46]

First you need to find how far he can run in one minute. To do that divide 18.4 by 5. I got 3.68.
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3 0

3 years ago

65% of what number is 39? A. 25.35 B. 60 C. 166.7 D. 2535

aleksandrvk [35]

B: 60. You solve it by dividing 39 by 0.65

3 0

4 years ago

Read 2 more answers

In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66.What

Lunna [17]

Answer:

We conclude that the lower limit of a box-and-whiskers display is 65.

We conclude that the upper limit of a box-and-whiskers display is 77.

Step-by-step explanation:

Definition: A box-and-whisker plot or boxplot is a diagram based on the five-number summarytext annotation indicator of a data set.

In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66.

We conclude that the lower limit of a box-and-whiskers display is 65.

We conclude that the upper limit of a box-and-whiskers display is 77.

3 0

3 years ago