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3 years ago

Which expression has the same value as sinx for all values of x?

Mathematics

1 answer:

KatRina [158]3 years ago

4 0

The answer would be sin(x+2pi)

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This question is asking me to “Identify whether each of the following is a linear function

mixer [17]

1 is not a linear function because it’s not a straight line since it curves as u can see

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3 years ago

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There are 7 more runners than walkers. If there are 11 walkers, how many runners are there?

Pavel [41]

Answer:18 runners

Step-by-step explanation:

7+11=18

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3 years ago

. Find the distance between (−4,−1) and (−2,−3).

algol [13]

Answer:

2.83 units

(results are in decimal form, rounded to the nearest 100th)

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4 years ago

6. Suppose that a fair coin is tossed 2 times, and the result of each toss (H or T) is recorded.

nekit [7.7K]

Answer:

a) $S= {HH, HT, TH, TT}$

b) $P(X=0) = (2C0) (0.5)^0 (1-0.5)^{2-0}= 0.25$

$P(X=1) = (2C1) (0.5)^1 (1-0.5)^{2-1}= 0.5$

$P(X=2) = (2C2) (0.5)^2 (1-0.5)^{2-2}= 0.25$

And we have the following table:

X | 0 | 1 | 2

P(X) | 0.25 | 0.5 | 0.25

Step-by-step explanation:

Let's define first some notation

H= represent a head for the coin tossed

T= represent tails for the coin tossed

We are going to toss a coin 2 times so then the size of the sample size is $2^2 = 4$

a. What is the sample space for this chance experiment?

The sampling space on this case is given by:

$S= {HH, HT, TH, TT}$

b. For this chance experiment, give the probability distribution for the random variable of the total number of heads observed.

The possible values for the number of heads are X=0,1,2. If we assume a fair coin then the probability of obtain heads is the same probability of obtain tails and we can find the distribution like this:

$P(X=0) = (2C0) (0.5)^0 (1-0.5)^{2-0}= 0.25$

$P(X=1) = (2C1) (0.5)^1 (1-0.5)^{2-1}= 0.5$

$P(X=2) = (2C2) (0.5)^2 (1-0.5)^{2-2}= 0.25$

And we have the following table:

X | 0 | 1 | 2

P(X) | 0.25 | 0.5 | 0.25

5 0

3 years ago

In a survey of 2,500 people who owned a certain type of car, 750 said they would buy that type of car again. What percent of th

mariarad [96]

Answer:

30%

Step-by-step explanation:

Simply divide your final value (750) by your initial value (2500).

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3 years ago