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krek1111 [17]
2 years ago
5

Amalie wants to know if students in her class prefer hot dogs or hamburgers. Why should Amalie survey the entire population rath

er than a sample of the population?
Mathematics
2 answers:
ryzh [129]2 years ago
7 0
Because this survey, as described in you question, is done in only her class, it is relatively a small scale so she must include all of her classmates, otherwise she may get wrong results if she just take small parts into her survey
den301095 [7]2 years ago
7 0

Answer and step-by-step explanation:

Since she is only wanting to know information on the people in her class, the population size is small enough that she can survey the entire population.  This will also give her more accurate results than a sample would, since she would be asking every person.

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Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0=2x2+3x-8?
Basile [38]

Answer:

Step-by-step explanation:

The given quadratic equation is

2x^2+3x-8 = 0

To find the roots of the equation. We will apply the general formula for quadratic equations

x = -b ± √b^2 - 4ac]/2a

from the equation,

a = 2

b = 3

c = -8

It becomes

x = [- 3 ± √3^2 - 4(2 × -8)]/2×2

x = - 3 ± √9 - 4(- 16)]/2×2

x = [- 3 ± √9 + 64]/2×2

x = [- 3 ± √73]/4

x = [- 3 ± 8.544]/4

x = (-3 + 8.544) /4 or x = (-3 - 8.544) / 4

x = 5.544/4 or - 11.544/4

x = 1.386 or x = - 2.886

The positive solution is 1.39 rounded up to the nearest hundredth

8 0
2 years ago
Read 2 more answers
A part-time landscaper made $8996.32 last year. if she claimed herself as an exemption for $3650 and had a $5700 standard deduct
Andrej [43]

Answer:

$0

Step-by-step explanation:

A part-time landscaper made $8996.32 last year.

She claimed herself as an exemption for $3650 and had a $5700 standard deduction

Exemption means not subject to taxation.

Deduction means taking some amount of your income for the year, and not have to pay taxes on it.

So, 8996.32-(3650+5700)

=-353.68

Since Her income is lower than the exemption and the standard deduction.

So, her taxable income last year was $0.

Thus Option D is correct.

7 0
2 years ago
Read 2 more answers
Ann took a taxi home from the airport. The taxi fare was \$2.10$2.10dollar sign, 2, point, 10 per mile, and she gave the driver
Studentka2010 [4]

Answer:

2.10x+5=49.10

Distance = 21 miles.  

Step-by-step explanation:

Let x be the distance in miles between the airport and Ann's home.

We have been given that Ann took a taxi home from the airport. The taxi fare was $2.10 per mile. So fare for x miles will be 2.10x.

We are also told that she gave the driver a tip of $5. Ann paid a total of $49.10. This means that fare of x miles and tip given to driver equals $49.10. We can represent this information in an equation as:

2.10x+5=49.10

Now let us solve our equation.

2.10x=49.10-5

2.10x=44.10

x=\frac{44.10}{2.10}=21

Therefore, the equation 2.10x+5=49.10 represents the distance in miles between the airport and Ann's home and distance between Ann's home and airport in 21 miles.


3 0
2 years ago
Read 2 more answers
The math club decided to have a car wash to raise money for competition expenses The graph below shows the relationship between
USPshnik [31]

Answer:

b

Step-by-step explanation:

8 0
2 years ago
Romeo paid $380.75 in car repairs. The sales Tax rate is 7.5% . Which of the following is a responsible estimate for the total R
rusak2 [61]

Answer: $380.75x0.075=28.55625

28.55625+380.75=409.30625

$409.30625~$409.31

Answer: $409.31

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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