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Hatshy [7]
2 years ago
12

(2x2 3+2)x(4x2 3-1/2)

Mathematics
2 answers:
Travka [436]2 years ago
6 0

Answer:

85.5

Step-by-step explanation:

Likurg_2 [28]2 years ago
6 0

Answer:

(2*2 3+2) * (4*2 3-1/2)

(4*5) * (8*3-0.5) = (8*2.5)

20*200

4000

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You work for a marketing firm that has a large client in the automobile industry. You have been asked to estimate the proportion
quester [9]

Answer:

The sample size must be approximately 1067 to get a margin of error of 0.03.

Step-by-step explanation:

We are given the following in the question:

Margin of error = 0.03

Significance level = 5%

Margin of error =

z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Since, no prior proportions are given, we take

\hat{p} = 0.5

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get,

0.03 = 1.96\sqrt{\dfrac{0.5(1-0.5)}{n}}\\\\\sqrt{n} = \dfrac{1.96\times 0.5}{0.03}\\\\\\sqrt{n} = 32.67\\n = 1067.3289\approx 1067

Thus, the sample size must be approximately 1067 to get a margin of error of 0.03.

3 0
3 years ago
Dependent and Independent Events
Inessa05 [86]

Answer:

Step-by-step explanation:

Hello!

If you consider the 6-sided dice to be balanced, then each result has the same probability of occurrence: P(1)=P(2)=P(3)=P(4)=P(5)=P(6)= \frac{1}{6}

And each time Tom rolls the dice is independent of the other times, this means that you can disregard all previous rolls and calculate the 10nth time as if it is the 1st one.

Be the event A: "Tom rolled the dice for the 10nth time and obtained a 6"

The probability of A occurring will be P(A)= 1/6

On the other hand, the complement of "A" will be A^c: "Tom rolled the dice for the 10nth time and didn't obtain a 6"

This means he could obtain a 1 or a 2 or a 3 or a 4 or a 5

You can calculate the probability pf this event by adding the probability of obtaining each value P(A^c)= P(1)+P(2)+P(3)+P(4)+P(5)= 1/6*5= 5/6

Or by subtracting the probability of A to the total probability of the sample space:

P(A^c)= 1 - P(A)= 1 - 1/6= 5/6

I hope this helps!

5 0
3 years ago
The area of a square is 625 m 2 . Find its side
Tomtit [17]

Answer:

25m

Step-by-step explanation:

Area = Side²

Side = √Area

= √625

= √25 x 25

= 25 m

3 0
2 years ago
Help I truly don’t understand anything
andrezito [222]
There are a total of 68 cars in the parking lot (sum of all values on the table).

Selecting blue OR a chevy, means all blue and all chevies are valid choices...there are 7+9+8+7+5 (blue cars and chevy cars) = 36:
36/68 =  9/17

Selecting blue AND a chevy - There are 8 blue chevies: 
<span>8/68= </span>2/17

GIVEN that the car is blue means we're <em>only selecting from </em>the 7+9+8 = 24 blue cars on the lot which are chevies...and there are 8 blue chevies:
8/24 = 1/3


6 0
3 years ago
The absolute value of a number is 16. What is this number? Select all that apply.
Sati [7]

Answer:

-16 and 16 so A and E

Step-by-step explanation:

The positive version of -16 is 16

4 0
2 years ago
Read 2 more answers
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