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Alja [10]
3 years ago
15

Which of these random samples represents a representative sample of the number of students in a middle school who walk to school

? a) All students in chess club b) 25 random 8th graders c) 150 random students at lunch d) 5 students in the hallway
Mathematics
1 answer:
Westkost [7]3 years ago
4 0

Answer:

c

Step-by-step explanation:

150 is a good sample of a middle school and students at lunch is random again because most students eat lunch

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Is there enough information to prove that the triangles are congruent?
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Answer:

Skill Tests

With a partner, complete the Skill Tests for the six areas of skill-related fitness and record both your scores and your partner’s scores below. Answer the reflection questions.

My Scores:

Agility – Agility Square Test:

Speed – Stay on Your Toes Test:

Reaction Time – Ready, Set, Go Test:

Balance – Stork Stance Test:

Coordination – Off the Wall Test:

Power – Standing Long Jump Test:

Partner Scores:

Agility – Agility Square Test:

Speed – Stay on Your Toes Test:

Reaction Time – Ready, Set, Go Test:

Balance – Stork Stance Test:

Coordination – Off the Wall Test:

Power – Standing Long Jump Test:

Compare your scores to your partner’s scores. Explain the reason for any differences.

How can improving your balance and coordination affect your performance in sports or recreational activities?

What activity was the most difficult for you to perform? Why?

Describe an activity that could help improve your striking and your reaction time skills.

Select a physical activity or sport that you have never done but would like to try one day. Identify at least one element of skill-related fitness that is important to being successful in this activity.

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6 0
3 years ago
Alan repairs televisions. His revenue is modeled by the function R(h)=10+30h for every h hours he spends repairing televisions.
RUDIKE [14]

ANSWER

Alan breaks even after 7 hours.

EXPLANATION

Alan's revenue is modeled by the function

R(h)=10+30h

His overhead cost function is modeled by the function

C(h)=5 {h}^{2}  - 25

Alan will break even when his cost is equal to his revenue.

5 {h}^{2}  - 25 = 30h + 10

5 {h}^{2} - 30h - 35 = 0

{h}^{2}  - 6h  -7 = 0

Factorize:

(h - 7)(h + 1) = 0

h =  - 1

or

h = 7

We discard the negative value.

He breaks even after 7 hours.

3 0
3 years ago
Vikas is the head of student council this year at his high school in London. He is responsible for planning the annual graduatio
olga nikolaevna [1]

Answer:

C = 600 + 50s

Step-by-step explanation:

Let s be the number of students that go on the trip.

Let C be the cost.

The bus costs $600 and the entry fee (for each student) costs $50.

The cost for the trip will be the sum of the cost of the bus and the ticket for every student that goes on the trip.

This implies that the total cost for the trip will be:

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C = 600 + 50s

5 0
3 years ago
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