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2 years ago

Which sample fairly represents the population? Select two options.

Mathematics

2 answers:

Travka [436]2 years ago

8 0

The answers are...

B) calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment

E) taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch

katen-ka-za [31]2 years ago

5 0

Answer:

C! ITS C!!!

Step-by-step explanation:

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A photo album contains small and large photographs. Each large photograph has side lengths that are twice the side lengths of ea

White raven [17]

Let
x----------> length side large <span>photograph
</span>y----------> width side large photograph and small photograph

<span>Each large photograph has side lengths that are twice the side lengths of each small photograph
</span>so
x/2--------> length side small photograph

we know that
The area of each small photograph is 24 in²
24=(x/2)*y------>24=x*y/2-----> 48=x*y

The area of each large photograph is-----> x*y
therefore
The area of each large photograph is 48 in²

the answer is
48 in²

8 0

2 years ago

A 2-column table has 5 rows. The first column is labeled x with entries negative 1, 0, 1, 2, 3. The second column is labeled y w

sammy [17]

Answer:

A. on edge

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

A father lifts a toddler 1.5 m up in the air. The child gains 187.5 J of energy in her gravitational potential energy store as a

bearhunter [10]

The mass of the toddler is 12.5 kg.

Step-by-step explanation:

The equation for gravitational potential energy is Ep=mgh where;

Ep=gravitational potential energy

m=mass of an object

g=gravitational field strength

h=height in meters

Given that ; h= 1.5m, Ep=187.5J , g=10 N/kg then finding m;

Ep=mgh

187.5=m*10*1.5

187.5=15m

187.5/15 =15m/15

12.5 kg=m

Learn More

Gravitation potential energy : brainly.com/question/939365

Keyword : Mass, gravitational potential energy

#LearnwithBrainly

5 0

2 years ago

The temperature of a city changed by −20 degrees Celsius over a 4-week period. The temperature changed by the same amount each w

borishaifa [10]

Let's say that the temperature it changed is x.

4 (x) =-20.

So basically we're dividing -20 by four, because the temperature changed by -20 degrees over four weeks, so the answer is -5.

6 0

2 years ago

You can win concert tickets from a radio station if you are the first person to call when the song of the day is played, or if y

Anit [1.1K]

The song of the day is announced at a random time between 7:00 and 7:30, so you have a 30-minutes span of time where the song could be announced. If you start listening to the radio 20 minutes in, you're at 2/3 of the time. So, there is a 2/3 chance that the song has already been chosen, and a 1/3 chance that it will be announced in the remaining 10 minutes.

Similarly, the trivia question is asked at a random time between 7:15 and 7:45 so there is again a 30-minutes span of time. But this time, we're only 5 minutes late, so there is a 5/30=1/6 chance that the question was already asked, and a 25/30=5/6 chance that the question will be asked in the remaining 25 minutes.

So, there are four scenarios:

You have missed both the song of the day and the trivia question. Given all we said, this event has a chance of

$\dfrac{2}{3}\cdot\dfrac{1}{6} =\dfrac{2}{18}$

You miss the song, but not the trivia:

$\dfrac{2}{3}\cdot\dfrac{5}{6} =\dfrac{10}{18}$

You miss the trivia, but not the song

$\dfrac{1}{3}\cdot\dfrac{1}{6} =\dfrac{1}{18}$

You don't miss anything:

$\dfrac{1}{3}\cdot\dfrac{5}{6} =\dfrac{5}{18}$

You're interested in the probability of missing either of the announcements, so you want to sum the two middle cases (in the first you miss everything, in the second you don't miss anything).

Your result is thus

$\dfrac{10}{18}+\dfrac{1}{18} = \dfrac{11}{18}$

3 0

2 years ago