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Butoxors [25]
2 years ago
7

You want to predict which candidate will likely be voted Seventh Grade Class President. There are 560 students in the seventh-gr

ade class. You randomly sample 3 different groups of 50 seventh-grade students. The results are shown.
Candidate Preference
Candidate A Candidate B
Sample 1 -27 23
Sample 2 -22 28
Sample 3 -15 35

Use each sample to make an estimate for the number of students in seventh grade that vote for Candidate A. Round your answer to the nearest whole number.

Sample 1: about ____ students

Sample 2: about ___ students

Sample 3: about ___ students

b. Who do you expect to be voted Seventh Grade Class President?
A. Candidate A
B. Candidate B

Explain.
Mathematics
1 answer:
Inga [223]2 years ago
7 0

Answer:

candidate b because it's mostly likely to have more people i think

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como calcular la cantidad de horas por proyecto si un contratista tiene 5,000 horas-hombres y el costo es de $10 y $12 por proye
Tju [1.3M]

Answer:

Each project has 2.500 man-hours

Step-by-step explanation:

Available man hours: 5000

For two projects          Costs $

X: project A                     10

Y: project B                     12

Approach:

X + Y = 5000 => X = 5000 - Y

10 * X + 12 * Y = 55000

replacing:

10 * (5000 - Y) + 12 * Y = 55000

50000 - 10 * Y + 12 * Y = 55000

2 * Y = 55000 - 50000

Y = 5000/2

Y = 2500

For X:

X = 5000 - 2500

X = 2500

The number of hours available for each project are:

Projects Man            hours

X: project A              2500

Y: project B              2500

6 0
3 years ago
The functions below describe the temperatures in two cities on the same day. Which city had the greater starting temperature? Wh
Tresset [83]

Answer:

They have the same rate of change.

Step-by-step explanation:

They both increase two degrees every hour.

4 0
3 years ago
If Michael drove 135 miles on 6 gallons of gas, how far can he drive on 15 gallons of gas?
laiz [17]

Answer:337.5 miles

Step-by-step explanation:

Find the unit rate 135/6 = 22.5/1

He can drive 22.5 miles on 1 gallon of gas

Then multiply by 15

22.5x15= 337.5

6 0
3 years ago
A hiker climbs a 5-mile trail up a mountain in 2 hours. On the return trip downhill, she walks the same trail and returns to her
Ivahew [28]

Answer:

3.33 miles per hour

Step-by-step explanation:

The total distance traveled by the hiker is 5 * 2 = 10 miles, and the total time travelled is 2 + 1 = 3 hours.

So, to find the average speed of the entire trip, we can use the formula:

distance = speed * time

With distance = 10 and time = 3, we have:

10 = speed * 3

speed = 10/3 = 3.33 miles per hour.

7 0
2 years ago
Sin(2x-pi/2)=sin pi/3
svet-max [94.6K]
This is the answer for your question!

8 0
3 years ago
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