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Paul [167]
3 years ago
11

DATA MANAGEMENT GRADE 12! HELP

Mathematics
1 answer:
Mashcka [7]3 years ago
4 0
There are winnings of $50 ( 60% ), $100 ( 20% ) and $1,000 ( 2% ).
$50 * 0.6 = $30
$100 * 0.2 = $20
$1,000 * 0.02 = $20
$30 + $20 + $20 = $70
Answer: The expected payout per fan is $70.
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2. What polynomial must be added to (ab - 5) to obtain (5 - ab)?​
Oxana [17]
7-ab will have to be added hope this helped! Also divided it
4 0
3 years ago
2/3 times 3/4<br> What is the answer?
umka21 [38]

Answer:

6/12 simplified: 1/2

Step-by-step explanation:

You just multiply the numerator by the numerator and the denominator by the denominator... 2x3 and 3x4

Hope you understand... if you have any questions just message in the box : D

7 0
3 years ago
Read 2 more answers
Find the value of x 4x + 3 = -5x + 21​
Novay_Z [31]

4x + 3 = -5x + 21

9x + 3 = 21

9x = 18

x = 2

Hope this helps!! :)

7 0
3 years ago
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Simplify without parentheses <br> (4v-3w)^2<br><br> Explain.
Lilit [14]
(4v-3w)∧2, Its to the second power so take the exponent 2 and put it on the variables and coefficients so you would have (4∧2)(v∧2)-(3∧2)(w∧2). Then you would do the math and get 16v∧2-9w∧2 than you would add the like terms so you have 25v∧2w∧2.
5 0
3 years ago
Read 2 more answers
In a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted o
Maksim231197 [3]

Answer:

324

Step-by-step explanation:

given that in a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?"

i.e. Sample proportion p=0.74\\q =1-p =0.26\\

Margin of error = 4% = 0.04

Confidence level =90%

Z critical value for 90% = 1.645

Margin of error = 1.645 * std error

Hence std error = \frac{0.04}{1.645} \\=0.0243

Std error is also equal to

\sqrt{\frac{pq}{n} } =\sqrt{\frac{0.74(0.26)}{n} } =0.0243\\\sqrt{n} =18..05\\n = 325.83~324

Sample size should be 324.

The formula is sample size = (Z critical value)^2 (pq)/(Margin of error )^2

3 0
3 years ago
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