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Viktor [21]
1 year ago
10

Can someone help me please

Mathematics
1 answer:
navik [9.2K]1 year ago
4 0

Answer:

the \: answer \: is \: choice \: b \:  \frac{ - 2 \sin(x) }{1 +  \cos(x) }

will give you an explanation if you want tag me on comment.

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Suppose that in a certain county 37% of voters are registered as Democrats, 29% as Republicans, 7% as Green party, and the rest
Fantom [35]

Answer:

0.66

Step-by-step explanation:

GIVEN: Suppose that in a certain county 37\% of voters are registered as Democrats, 29\% as Republicans, 7\% as Green party, and the rest are considered Independents. You conduct a poll by calling registered voters in the county at random.

TO FIND: Probability that the first call will be to either a Democrat or a Republican.

SOLUTION:

Lets total population of county be 100x.

voters registered as Democrats =37\%=\frac{37}{100}\times100x

                                                     =37x

voters registered as Republicans =29\%=\frac{29}{100}\times100x

                                                       =29x

voters registered as Green party =7\%=\frac{7}{100}\times100x

                                                       =7x

Probability that first call will be to Democrats P(A)=\frac{\text{total democrats}}{\text{total voters}}

                                                                                    =\frac{37x}{100x}=0.37

Probability that first call will be to Republican P(B)=\frac{\text{total republicans}}{\text{total voters}}

                                                                                     =\frac{29x}{100x}=0.29

probability that the first call will be to either a Democrat or a Republican

=P(A)+P(B)

=0.37+0.29

=0.66

Hence the probability that the first call will be to either a Democrat or a Republican is 0.66

6 0
3 years ago
Which statement would produce a tautology?
andreyandreev [35.5K]
Tautology is when something is repeated in a sentence but using different words. It can be used to enrich the sentence but also it can be needless repetition.

5 statements that would produce a tautology:

1. Lets order a toast sandwich. 
2. In my opinion, I think he is right. 
3. The Gobi is a very dry desert.
4. The hurricane hit in 3 p.m. in the afternoon. 
5. Don't worry, everything is well and good.
3 0
3 years ago
Find the equation of the line passing through the point (–1, 5) and perpendicular to the line y = – 3x + 4.
dsp73

9514 1404 393

Answer:

  A)  3y = x + 16

Step-by-step explanation:

The equation of a perpendicular line can be found by swapping the x- and y-coefficients and negating one of them. The constant will be chosen to match the given point.

Swapping coefficients, we get ...

  -3y = x + c

Negating the y-coefficient gives ...

  3y = x + c

Filling in the given point, we have ...

  3(5) = -1 + c

  16 = c

The equation of the perpendicular line can be written as ...

  3y = x + 16 . . . . matches choice A

_____

Note that choice A is the only equation that gives a line with positive slope. The given equation has negative slope, so its perpendicular must have positive slope.

3 0
3 years ago
Consider the two linear expressions. 2+3x+1/2 and 2.5+3x Are the two linear expressions equivalent? HELP!
Marina86 [1]

Answer21

Step-by-step explanation:xpressions equivalent? HELP!

7 0
2 years ago
Pedro had $235 in his saving account when Jim had $450 in his account. Look at the situation in the image. Which inequality show
11111nata11111 [884]

Answer:

$450>$235

Step-by-step explanation:

This is because, when 235 is subtracted from 450 there is a great difference thats why $450 is greater than $235

4 0
3 years ago
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