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Llana [10]
2 years ago
8

you want to predict which movie will be the most popular among the students at your school next weekend. To do so, you ask a sam

plw of people at your school what movie the most want to see. Which of these methods is most likey to produce a representative sample (A.ask one student at your school/B.ask a group of students in a film class/C.ask one student from each class/D.ask several of your friends) THE ANSWER IS C EXPLAIN WHY PLZ
Mathematics
1 answer:
Komok [63]2 years ago
6 0
Because if you ask one student from each class you are getting a more accurate representation of the classes. If you were to ask one group you'd only get their opinion
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Police use the formula [math]v=2 \sqrt{5 L}[/math] to estimate the speed of a car, v, in miles per hour, based on the length, L,
Len [333]

Answer:

V(L=45) = 2\sqrt{5*45ft}= 2 \sqrt{225}= 2*15 =30 \frac{mi}{hr}

And if we compare this value with the speed limit of 35 mi/h then the police officer should believe that the motorist was not speeding, since his speed was lower than 35 mi/hr.

Step-by-step explanation:

Estimate the speed at which the motorist was traveling before braking

For this case we have the following formula for the spped of a car:

V= 2 \sqrt{5L}

Where L represent the length and v the velocity in miles/hr.

For this case we know that a police officer measures the car’s skid marks to be 45 feet long, so then L =45 ft, and we can finde the velocity of the car replacing L=45 ft and we got:

V(L=45) = 2\sqrt{5*45ft}= 2 \sqrt{225}= 2*15 =30 \frac{mi}{hr}

If the posted speed limit is 35 miles per hour and the motorist tells the officer she was not speeding, should the officer believe her? Explain

And if we compare this value with the speed limit of 35 mi/h then the police officer should believe that the motorist was not speeding, since his speed was lower than 35 mi/hr.

8 0
2 years ago
A local hamburger shop sold a combined total of 575 hamburgers and cheeseburgers on Saturday. There were 75 fewer cheeseburgers
AveGali [126]

Answer:

D.

Step-by-step explanation:

it is right

3 0
2 years ago
What is the vertex of x^2
Delvig [45]

Answer:

The vertex is (0,0)

Step-by-step explanation:

To find the x coordinate of the vertex

x = -b/2a  where ax^2 +bx +c

a=1 b=0 c=0

x = -0/2(1) = 0

The y value is found by substituting into the equation

y = (0)^2 =0

The vertex is (0,0)

6 0
2 years ago
1.) The _____ value of your ordered pair is the input
torisob [31]
1. x-value
2. y-value
3 0
2 years ago
Read 2 more answers
Divide 1 1/5 ÷ 2/3 plz awser in a mixed number and in simplest form.
katovenus [111]

1 \frac{4}{5}

change 1 \frac{1}{5} to an improper fraction = \frac{6}{5}

to divide change  ÷ to × and turn the divisor upside down

\frac{6}{5} ÷ \frac{2}{3} = \frac{6}{5} × \frac{3}{2}

=  \frac{18}{10} = \frac{9}{5} = 1 \frac{4}{5}


3 0
2 years ago
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