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Pani-rosa [81]
3 years ago
7

What is the best way to gather information for each of the scenarios?

Mathematics
2 answers:
charle [14.2K]3 years ago
7 0

Lisboa is wrong, I just took the test. The correct answer is

Observational study, survey, experiment, observational study

edit: nvm I'm thinking of if the first question was "who the fastest runner is" :/

topjm [15]3 years ago
4 0

(a) The team captain wants to know what his teammates eats before a match

Team captain know by taking a survey of teammates

(b) The team captain wants to know who can score most goals against the best player

This can be known by observation of games. so its observational study

(c) The team captain wants to know how praising the affects the teammates performance.

This can be known by experiment

(d) The team captain wants to know what other sports teammates play

This can be known by observation of games. so its observational study


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A tunnel is constructed with a semielliptical arch. The width of the tunnel is 80 feet, and the maximum height at the center of
slavikrds [6]

Answer:

Step-by-step explanation:

Example Equation of an ellipse with horizontal major axis with center at (0,0):

x%5E2%2Fa%5E2%2By%5E2%2Fb%5E2=1

For given problem:

b=20

b^2=400

a=30

 

a^2=900

equation: x%5E2%2F900%2By%5E2%2F400=1

y%5E2%2F400=1-x%5E2%2F900

7 0
3 years ago
Read 2 more answers
Pat wants to create s rectangular playpen for her dogs in her backyard. And estimates the dogs will need 600 square feet. She al
Ira Lisetskai [31]
I found width=13.72 ft and length=43.72 ft.
Call one dimension of the rectangle x, the other will be x+30
You want an area A=600 ft^2 but A=length x width=x*(x+30)=600
Rearranging you get:
x^{2} +30x-600=0
solving this quadratic equation you get a negative solution and a positive one that gives your result.

8 0
3 years ago
A piggy bank contains 36 coins that consists of dimes and quarters totaling $5.85 how many quarters are in the piggy bank in you
Lesechka [4]
The main idea here is to "translate" the words into maths. 
First we need to identify the unknowns and label these. 

We need to know the number if dimes and the number of quarters. So lets say
x: number of dimes
y: number of quarters

Now lets write equations from the written problem. 
We know that there are 36 coind total, thus: 
x + y = 36
We also know that the coins total 5.85 dollars, but it is better to count in cents, that is 585 cents. 
x are the number of dimes, their value is x*10
y are quarters with value of y*25
thus: 
10x+25y=585

We have two equations and two unknowns now, that needs to be solved to get the answer. 

x + y = 36
10x+25y=585


4 0
3 years ago
Read 2 more answers
Find the standard deviation for the set of data {27, 14, 7, 21, 19, 23, 26, 30, 4}
antoniya [11.8K]

4 , 7 , 14 , 19 , 21 , 23 , 23 , 26 , 27 , 30

Step-by-step explanation:

HOPE IT'S HELP ;)

7 0
2 years ago
5/8 divided by -1/10
svetoff [14.1K]

Answer:

-0.0625

Step-by-step explanation:

5 0
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