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Maru [420]
3 years ago
5

Carl takes a random sample of 100 students in his school and finds that 72% of the sample prefers pizza over burgers there are 1

,500 students in the school based on the sample proportion how many students in the school would be expected to prefer pizza over burgers \\\\ either 72,100,1080,1500
Mathematics
1 answer:
jeka943 years ago
3 0

Out of the 100 people in the sample, 72% said they preferred pizza. That 72% should be the same for the whole school.

1500 × .72 = 1080

about 1080 students in the school prefer pizza

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Add. (5x - 2y + 7) + (3x + y - 8)
Schach [20]

Answer:

=8x-y-1

Step-by-step explanation:

So we have the expression:

(5x-2y+7)+(3x+y-8)

Combine like terms:

=(5x+3x)+(-2y+y)+(7-8)

Add:

=8x-y-1

And we're done!

3 0
3 years ago
Read 2 more answers
Matter is in a liquid state when its temperature is between its melting point and its boiling point. Suppose that some substance
a_sh-v [17]

Answer:

i. When the temperature is above 616.712^{o}F, it changes to gas.

ii. When the temperature is below -33.052^{o}F, it changes to solid.

Step-by-step explanation:

Matter generally exists in either a solid, liquid or gaseous form. With each phase having a certain range of temperature.

Temperature scale of a given substance can be either in Celsius, Fahrenheit or Kelvin. And conversion from one scale to another can be achieved. Example, Celsius scale can be converted to Fahrenheit by:

F = \frac{9}{5} θ + 32

where: F is the equivalent temperature in Fahrenheit, θ is the value of temperature in degree Celsius.

Given that: melting point of the substance = -36.14^{o}C

⇒ F =  \frac{9}{5} x -36.14^{o} + 32

      = -33.052^{o}F

The boiling point = 324.84^{o}C

F =  \frac{9}{5} x  324.84^{o} + 32

  = 616.712^{o}F

The melting point of the substance is -33.052^{o}F, and boiling point is 616.712^{o}F.

Therefore, the range of temperatures for which the substance is not in a liquid state are:

i. When the temperature is above 616.712^{o}F, it changes to gas.

ii. When the temperature is below -33.052^{o}F, it changes to solid.

3 0
3 years ago
The wind speed s (in miles per hour) is related to the distance (in miles) the tornado travels by the equation s = 93log d + 65.
Vesnalui [34]

Answer:

The distance the tornado traveled was approximately 205 miles.

Step-by-step explanation:

The equation representing the relationship between the wind speed (in miles per hour) and the distance the tornado travels (in miles) is:

s=93\log d+65

Compute the value of <em>d</em> for <em>s</em> = 280 as follows:

        s=93\log d+65

     280=93\log d+65

93\log d=280-65\\93\log d=215

   \log d=2.312\\

        d=10^{2.312}\\d=205.035\\d\approx 205

Thus, the distance the tornado traveled was approximately 205 miles.

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krok68 [10]

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2 years ago
What is the product of 3x+4 and 6x^{2} −5x+7?
LUCKY_DIMON [66]

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I hope I helped you^_^

8 0
2 years ago
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