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2 years ago

I’m bad at math. This looks easy but of course I have no idea

Mathematics

2 answers:

Zanzabum2 years ago

3 0

Step-by-step explanation:

(this probably won't help so sorry) this is how I would do it:

6x+24 =90

90-24=66

6x= 66

66/6 =11

x=11

aleksklad [387]2 years ago

3 0

The answer is correct but I think the second step is wrong.
If your trying to solve for x then first you have to subtract 24 from both sides (24 and 90) so the 24 cancels out and your left with 6x = 66. Then you divide 6 by both sides and the 6x/6 cancels out so you’ll be left with X = 66/6 and then you will get X = 11

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An exit poll in an election is a survey taken of voters just after they have voted. One major use of exit polls has been so that

3241004551 [841]

Answer:

P(A) = 0.39

Step-by-step explanation:

We are given;

P(W|A) = 0.7

P(W|A^c ) = 0.3

We are told that 60% of the respondents said they voted for A. Thus;

P(A|W) = 60% = 0.6

Now, using the principle of drawing lots, we can be able to find the probability of the event that they are willing to participate in the exit poll which is P(W).

Thus;

P(W) = [P(W|A) × P(A)] +[P(W∣A^c) × P(A^c)]

Now, P(A^c) can be expressed as 1 - P(A)

Thus, we now have;

P(W) = [P(W|A) × P(A)] + [P(W∣A^c) × (1 - P(A)]

Plugging in the relevant values gives;

P(W) = 0.7P(A) + 0.3(1 - P(A))

P(W) = 0.7P(A) + 0.3 - 0.3P(A)

P(W) = 0.3 + 0.4P(A)

Now,using Baye's theorem, we can find an expression for P(A|W)

Thus;

P(A|W) = [P(A ∩ W)]/P(W)

This can be further expressed as;

P(A|W) = [P(A) × P(W|A)]/P(W)

Plugging in relevant values, we have;

0.6 = 0.7P(A)/(0.3 + 0.4P(A))

Cross multiply to get;

0.6(0.3 + 0.4P(A)) = 0.7P(A)

0.18 + 0.24P(A) = 0.7P(A)

0.18 = 0.7P(A) - 0.24P(A)

0.46P(A) = 0.18

P(A) = 0.18/0.46

P(A) = 0.39

7 0

2 years ago

How would you solve 4667 divided by 7

lidiya [134]

Answer:

666.7 with long division

Step-by-step explanation:

4667 can be divided by 7 by doing long division. I tried to show this best I could.

__666.7______

7|4667.0

-42

-49

and so on

7 0

2 years ago

A particular brand of color laser jet printer can print 1428 pages in 6 minutes. wants to figure out how many pages she can prin

boyakko [2]

Answer:

6664 pages

Step-by-step explanation:

1428/6 =238 per minute

238 x 28 = 6664 pages

3 0

2 years ago

2log(x+11) = (1/2)^x

Lina20 [59]

X = -1

Hope this helps!

7 0

3 years ago

Read 2 more answers

A school district held a meeting for all its physical education teachers.The number of women attending was 5 more than twice the

Alecsey [184]

Answer:

The system of equation is $w+m=53$ and $w=2m+5$ .

There are 16 men who are attended the meeting.

Step-by-step explanation:

Given,

Total number of teachers = 53

Solution,

Let the total number of women teachers be 'w'.

And also let the total number of men teachers be 'm'.

So, total number of teachers is the sum of total number of women teachers and total number of men teachers.

This can be framed in equation form as;

$w+m=53\ \ \ \ equation\ 1$

The system of equation is $w+m=53$ .

Now according to question,

The number of women attending was 5 more than twice the number of men attending the meeting.

So this can be framed in equation form as;

$w=2m+5\ \ \ equation\ 2$

Now we insert the value of w from equation 2 in equation 1, we get;

$2m+5+m=53\\\\3m+5=53\\\\3m=53-5=48\\\\m=\frac{48}{3}=16$

Now we solve for 'w';

$w=2m+5=2\times16+5=32+5=37$

Hence there are 16 men who attended the meeting.

And also there are 37 women who attended the meeting.

3 0

3 years ago