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3 years ago

What is the domain of this relation? (20, 14) (-10, 10) (20, -1)

Mathematics

2 answers:

ehidna [41]3 years ago

8 0

Answer:

Domain is 10 and 14 range

Step-by-step explanation:

because set of all first element of order pairs 9f a relation is called domain

hope it helps u

Airida [17]3 years ago

6 0

Answer:

domain=(20, -10)

I hope this will help you

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A coin, having probability p of landing heads, is continually flipped until at least one head and one tail have been flipped. (a

Natali [406]

Answer:

(a)

The probability that you stop at the fifth flip would be

$p^4 (1-p) + (1-p)^4 p$

(b)

The expected numbers of flips needed would be

$\sum\limits_{n=1}^{\infty} n p(1-p)^{n-1} = 1/p$

Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

Step-by-step explanation:

(a)

Case 1

Imagine that you throw your coin and you get only heads, then you would stop when you get the first tail. So the probability that you stop at the fifth flip would be

$p^4 (1-p)$

Case 2

Imagine that you throw your coin and you get only tails, then you would stop when you get the first head. So the probability that you stop at the fifth flip would be

$(1-p)^4p$

Therefore the probability that you stop at the fifth flip would be

$p^4 (1-p) + (1-p)^4 p$

(b)

The expected numbers of flips needed would be

$\sum\limits_{n=1}^{\infty} n p(1-p)^{n-1} = 1/p$

Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

7 0

3 years ago

Renaldo will write 3/20 as a decimal. Which of the following methods should he use?

makvit [3.9K]

ANSWER

1. Multiply the fraction by 5/5 to get a denominator of 100 and then write the numerator as hundredths using a decimal point.

EXPLANATION

Renaldo wants to write

$\frac{3}{20}$

as a decimal.

He needs a denominator of 100, so he can multiply by

$\frac{5}{5}$

to obtain:

$\frac{3}{20} = \frac{3 \times 5}{20 \times 5}$

This will be

$= \frac{15}{100}$

He can now obtain the decimal equivalent as

$= 0.15$

The correct choice is option 1.

3 0

3 years ago

Read 2 more answers

Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao work

Snezhnost [94]

This kind of problems requires to add the working velocities. The total velocity is the sum of the individual velocities.

Anita's velocity = 1 pool/8 hours
Chao's velocity = 1 pool/6 hours

Combined velocity 1/8 + 1/6 = (3 + 4)/24 = 7/24 pool/hour

Time = 1 pool / (7/24) pool/hour = 24/7 hour =3.43 hours

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4 years ago

(-6,8); perpendicular to y = -3/2x -1

UNO [17]

Answer:

$y = \frac{2}{3} x + 12$