What’s the answer to number 13 14 and 15
Answers
Answer:
14. It is biased, because the store manager sends the survey to a customer who registered. I will send the survey to a customer who is not registered and who is new to the store.
15. This is unbiased, because they chose the students randomly.
Step-by-step explanation:
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Answers
The radius of the circle is 23 cm if the bicycle wheel has a diameter of 46 cm the answer is 23 cm.
What is a circle?
It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
It is given that:
A bicycle wheel has a diameter of 46 cm
The bicycle wheel is in the shape of a circle.
The diameter of the circle D = 46 cm
As we know, the diameter of the circle is double the radius or the radius of the circle is half the diameter.
r = D/2
Here, r is the radius of the circle
D is the diameter of the circle.
r = 46/2
Divide by 2 on the numerator and denominator.
r = 23 cm
Thus, the radius of the circle is 23 cm if the bicycle wheel has a diameter of 46 cm the answer is 23 cm.
Learn more about circle here:
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The radius will be half of the diameter
Which will make the radius 23
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The ticket for an adult costs $10 and the ticket for a child costs $7
- Let adults tickets be a
- Let children tickets be c
Based on the information given, the equation to solve the question will be:
2a + 4c = 48
5a + 2c = 64
Multiply equation i by 5
Multiply equation ii by 2
10a + 20c = 240
10a + 4c = 128
Subtract the equations
16c = 112
c = 112/16
c = 7
The ticket for a child is $7
Since 2a + 4c = 48
2a + 4(7) = 48
2a + 28 = 48
2a = 48 - 28
2a = 20
a = 20/2
a = 10
The ticket for an adult cost $10
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Answer:
The price for one adult is $10 while the price for one child is $7
Step-by-step explanation:
Let
price for an adult = a
price for a child = b
2a + 4b = 48.............(i)
5a + 2b = 64.............(ii)
make a subject of the formula in equation (i)
2a = 48 - 4b
divide through by 2
a = 24 - 2b
Insert the value of a in equation (ii)
5(24 - 2b) + 2b = 64
120 - 10b + 2b = 64
collect like terms
- 8b = 64 - 120
-8b = -56
divide both sides by -8
b = 7
insert the value of b in equation(i)
2a + 4(7) = 48
2a + 28 = 48
2a = 48 - 28
2a = 20
divide both sides by 2
a = 10
The price for one adult is $10 while the price for one child is $7
Answers
1,2 4 ,8
then just connect it, like a rainbow, hence the name.
Hope that helped!