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jenyasd209 [6]
3 years ago
12

A math teacher wants to find out the average number of hours his students spend working on their math homework for his class eac

h week. Which group would best represent a sample of the population? the first 30 students who enter the school building one morning 30 students selected from the lunchroom 30 students selected from his class rosters 30 students who stay after school for football practice
Mathematics
2 answers:
neonofarm [45]3 years ago
6 0

30 students selected from his class rosters

Stolb23 [73]3 years ago
4 0
It would be 30 students from his class roster because not every kid would have his math class in the other options.
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explanation:

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Mashutka [201]

Answer:

Part 1) 10\ months

Part 2) \$25,000

Step-by-step explanation:

Let

y ----> the total amount of savings

x ----> the number of months

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

<em>Herman</em>

The slope is equal to m=\$1,000\ per\ month

The y-intercept is b=\$15,000

substitute

y=1,000x+15,000 ----> equation A

<em>Jackie</em>

The slope is equal to m=\$1,300\ per\ month

The y-intercept is b=\$12,000

substitute

y=1,300x+12,000 ----> equation B

Part 1) In how many months will they have the same amount of savings?

equate equation A and equation B

1,300x+12,000=1,000x+15,000

solve for x

1,300x-1,000x=15,000-12,000

300x=3,000

x=10\ months

Part 2) How much will each of them have saved?

substitute the value of x=10 months in any of the equations

equation A

y=1,000(10)+15,000=\$25,000

equation B

y=1,300(10)+12,000=\$25,000

7 0
3 years ago
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leva [86]

Answer:

5/8

Step-by-step explanation:

8 children in class

3 have pink on

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That means 5 do not have pink

Fraction that do not have pink

those that do not have pink/total

5/8

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