A band leader randomly selects 2 students out of 100 band members. If you and your brother are band members, what is the probability that you are bothselected?
a. 1/2500
b. 1/9900
c. 1/4950
d. 2/100
need right now please

Answers

Answer 1

Answer:

Answer: Hello mate!

There are 100 students, and each one has the same probability of being selected, which is 1/100

The chances that the band leader selects you is 1/100

now the chances that the band leader selects your brother is one over the total number of people in the band, but you have already been selected, so there are 99 people right now in the band, this probability is of 1/99.

The joint probability of both events is the product of the probabilities, this is:

P = (1/100)*(1/99) = 1/9900

But there is also the chance where your brother is picked first and you second, which also has a probability of 1/9900.

Then the total probability of you and your brother to being selected is:

P = 1/9900 + 1/9900 = 2/9900 = 1/4950

te right option is option C.

Answer 2

Answer: That probability is 1/4950 .

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Which statements are true for irrational numbers written in decimal form? A. Irrational numbers are nonterminating. B. Irrational numbers are repeating. C. Irrational numbers are nonrepeating. D. Irrational numbers are terminating.

Answers

The correct options are A and C because irrational numbers are nonterminating and nonrepeating.

Given:

Some statements for irrational numbers are written in decimal form.

Explanation:

Rational number: A rational number can be defined in the form of $(p)/(q),q\neq 0$ . Rational numbers are either terminating or repeating decimal numbers.

Examples: $(3)/(5),2.555...,4.5$ etc.

Irrational number: An irrational number cannot be defined in the form of $(p)/(q),q\neq 0$ . Irrational numbers are nonterminating and nonrepeating decimal numbers.

Examples: $√(3),\pi ,1.35742784...$ etc.

Therefore, the correct options are A and C.

Learn more:

brainly.com/question/16940513

The correct answers are

A. Irrational numbers are nonterminating; and C. Irrational numbers are nonrepeating.

Explanation:

Irrational numbers are numbers that cannot be written as rational numbers, or fractions.

Terminating decimals have a specific endpoint; this means we can find the place value of the last digit of the number and write it as a fraction (if it ends in the tenths place, it is a fraction over 10; if it ends in the hundredths place, a fraction over 100; etc.).

Repeating decimals can also be written as a fraction; for example, 0.3 repeating is 1/3; 0.6 repeating is 2/3; 0.1 repeating is 1/9; etc.

This means that irrational numbers must be nonrepeating and nonterminating.

The diameter of a bicycle wheel is 2 feet.About how many revolutions does the wheel make to travel 2 kilometers?Explain.Hint 1 km =3280ft.

Answers

We can work out the circumference of the wheel by using the equation

C = πd

C = π × 2
C = 6.28318530718
C = 6 feet

If 1km is 3280 feet, 2km is 6560 feet

6560 ÷ 6 = 1093.33333333 (recurring)
= 1093

Therefore the bike wheels rolls (approximately) 1093 times to cover 2km.

Beth runs 20 miles each week for 8 weeks.How many miles does Beth run in 8 weeks?

Answers

Beth runs 160 miles.

beth runs 160 miles in 8 weeks

A firm starts work with 110 employees for the 1st week. The number of employees rises by 6% per week. How many weeks will it take for 250 persons to be employed?

Answers

1 % of 110 = 1.1
x 6 = 6.6
round up because you can't have 0.6 of a person.
7 people a week.
250 - 110 = 140
140 divided by 7 = 20
20 weeks

110 x 1.06 = 116.6
Now if 116.6 is x repeat this step till you get 250 people
X x 1.06
, so it will take roughly 14-15 times to get 250 employees but 14 times is the closer one

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Answers

the answer is the last one

THE LAST ONE IS TRUE

good luck

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