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Ierofanga [76]
3 years ago
7

A poll is given, showing 40% are in favor of a new building project. If 8 people are chosen at random, what is the probability t

hat exactly 2 of them favor the new building project?
Mathematics
1 answer:
labwork [276]3 years ago
6 0

Answer:

Probably 25%

Step-by-step explanation:

Set a random simulation up. The maximum of number of people that could've possibly be in favor of the new building project would be 2 people.

1 Yes

2 No

3 No

4 No

5 No

6 Yes

7 No

8 No

2/8 is 25%

There is a chance that exactly the next 2 people will be in favor of the building project

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A commuter must pass through five traffic lights on her way to work, and she will have to stop at each one that is red. After ye
uysha [10]

Answer:

a. (b) 2.5

b. (b) 1.89

Step-by-step explanation:

E(X) =0(0.05)+1(0.25)+2(0.35)+3(0.15)+4(0.15)+5(0.15)= 2.5

7 0
3 years ago
4(2x - 5) = 5x -20 +3x
True [87]
Firstly, you have yo multiply out the first bracket by multiplying (2x - 5) by 4. The equation would then look like:

8x - 20 = 5x - 20 + 3x

Then you have to put normal numbers on one side and x-terms on the other. It would look like:

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Then you should solve the additions and subtractions

0 = 0x

Since ANY number multiplied by 0 is zero, your equation has infinite solutions.
6 0
3 years ago
Read 2 more answers
Find the value for the side marked below.
lions [1.4K]

Answer:

y = 189.8

Step-by-step explanation:

Apply trigonometric function to find y.

Reference angle (θ) = 50°

Adjacent side = 122

Hypotenuse = y

Apply CAH, since the Hypotenuse and the Adjacent are involved.

Thus:

Cos θ = Adj/Hypo

Plug in the values

Cos 50° = 122/y

y*Cos 50° = 122

y = 122/cos 50°

y = 189.8 (beater tenth)

6 0
3 years ago
In a city, 49% of the adults are male. Of the adults, 24% are male and rent action-movie DVDs and 10% are female and rent action
kolezko [41]

Answer:

I getting the probability of the adult female that will rent the action movies in DVDs in by dividing the possible probability outcome which is 10% of all adults by the total number of possible outcome. So all of the population of the female is 51% and the ones who rent is only 10%. the probability is 19%

3 0
3 years ago
Write an expression to represent:<br> The sum of seven and the quotient of a number x and eight.
marin [14]
Hi!

Let's just take this part by part.

The sum of seven is the first part written. You can deduce from that, that it's 7 + something.

The next part is the quotient of a number x and 8. A quotient is the result of something being divided, so we can figure out that it's x / 8.

Putting it all together, you get the expression as 7 + x / 8.

Hope this helped!
3 0
3 years ago
Read 2 more answers
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