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Nat2105 [25]
3 years ago
9

How much data is needed to have a representative sample of the population?

Mathematics
1 answer:
algol [13]3 years ago
4 0

It depends on the size of the population. Should be your answer because you need to know how much is in the population.

You might be interested in
Express 0.0057 in scientific notation
andrew-mc [135]

Answer:

5.7 \times  {10}^{ - 3}

Step-by-step explanation:

0.0057

first number

5

then the rest

7

equal

5.7

There's <u>three</u> zeros <u>behind</u> the number 5 which mean it will be -3

\times  {10}^{ - 3}

final answer

5.7 \times {10}^{ - 3}

another example and it will be clear

0.0000403

first number

4

then the rest

03

equal

4.03

There's <u>five</u> zeros <u>behind</u> the number 4 which mean it will be -5

\times {10}^{ - 5}

final answer

4.03 \times {10}^{ - 5}

3 0
3 years ago
What is the sum of the rational expression 2x+7/x+5+x-3,x+5
lana [24]

Answer:

there

Step-by-step explanation:

6 0
3 years ago
Alexa has finished her culinary training program and is now working full-time as a chef in a hotel resort restaurant. She has tr
otez555 [7]

Answer: The budget of Alexa is increased by $100.

Explanation:

It is given that the current income of Alexa is 3 times of her previous income.

Her previous salary was $800 and current salary was $2400.

Expenses =   Rent  + Utilities  + Groceries  + Savings  + Bus

The sum of previous expenses is,

Previous expenses = $300 + $60 + $200 + $100 + $30 = $690

The sum of current expenses is,

Current expenses = $300 + $60 + $250 + $150+ $30 = $790

Effect of income on expenses is the difference of current expenses and previous expenses.

Effect of income on expenses = $790 - $690 = $100

Therefore, the budget of Alexa is increased by $100.

3 0
4 years ago
Read 2 more answers
Help with homework Algebra 2:
Darina [25.2K]
The answer is 12y^2 + 2y - 5
The solution:
(72y^3 + 12y^2 - 30y) / 6y =
(6y)*(12y^2 + 2y - 5) / 6y = 12y^2 + 2y - 5
6 0
3 years ago
Read 2 more answers
I don’t know how to solve things like this
EleoNora [17]
To do this problem you need to find angle adc which is a part of angle BDA. angle BDA is 90 degrees so the 2 parts must add up to 90 degrees so you set up the problem like this
-2x + 144 - 3x +51 =90
then you combine like terms
-5x +195 = 90
then you subtract 195 from 90
-5x = -105
then you divide -5 by -5 and -105 by -5 and get
x=21
then you plug x in and get your angle measure
-3(21) +51
then you get the angle measure as 114 degrees.
8 0
3 years ago
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