Matilda asked 20 random people in the street if they would like to discuss what they want to do during the summer break. Seven of them said yes.How is this sample biased?

She should have asked more people.

The people who chose to participate might not be similar to the people who didn’t.

She should have asked girls only.

Answers

Answer 1

Answer:

Answer: She should have asked more people.

Step-by-step explanation:

Given: Matilda asked 20 random people in the street if they would like to discuss what they want to do during the summer break.

Here sample size=20

We can see the sample is biased because the sample size is too small.

Through them we cannot decide the answer of the population.

She should have asked more people in the street if they would like to discuss what they want to do during the summer break. Then she need to make a list of their answers in approach to the answer.

Answer 2

Answer:

Answer:

The correct answer is C. The people who chose to participate might not be similar to the people who didn't.

I just did the assignment and got it right.

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116 is 145% of what number
Factor completely vwx+wxy-xyz

Perpendicular lines form a 90° angle. True
or false?

Answers

Answer:

True

Step-by-step explanation:

Answer:

it really just depends

Step-by-step explanation:

The formula for finding the volume of a cone is V = 1/3 ( fraction )
πr2h. The radius of a cone is 5 cm and the height of a cone is 10 cm. What is the approximate volume of the cone?

A) 2,356 cm3 (exponent )

B) 52 cm3 (exponent )

C) 262 cm3 (exponent )

D) 524 cm3 (exponent )

Answers

C. 262 cm^3

1/3 (pi)× 5^2× 10

1/3 (pi)× 25 × 10
1/3 (pi) × 250
250÷3
= 83.33333
83.33333 × pi

= 261.79

round up to 262

Six less than two thirds of a number is 18. solve.
show an equation

Answers

18=(2/3)x-6
+6 +6
24=(2/3)x
÷(2/3) ÷(2/3)
36=x
check it now
18=((2/3)(36))-6
18=(24)-6
18=18
that is a true statement so x must be equal to 36
x=36

6-2/3=18 That is my answer

For the coordinates of P and M (the midpoint) are given. Find the coordinates for Q.P(3, 11) and M (0, 0)

Answers

Given an endpoint of a segment and a midpoint, the other endpoint can be obtained by manipulation of the midpoint formula. The said formula is shown below:

Let: (a,b) = coordinates of point 1 ; (c,d) = coordinates of point 2; (e,f) = coordinates of the midpoint

Midpoint = ( (a+c)/2 , (b + d)/2 )

From the formula: (a+c)/2 = e ; (b + d)/2 = f

Since we are already given an endpoint and the midpoint, we can solve for the other endpoint using the obtained equations. This is shown below:

(a+c)/2 = e
(3 + c)/2 = 0
c = -3

(b + d)/2 = f
(11 + d)/2 = 0
d = -11

Therefore, the coordinates of the other point is Q(-3,-11)

For each value of kk specified in parts (a)–(e), plot the set of points in the plane that satisfy the equationx2 / k − y2 = 1.
a. k = −1
b. k = 1
c. k = 2
d. k = 4
e. k = 10
f. k = 25
g. Describe what happens to the graph of
x2 / k − y2 = 1 as k → [infinity].

Answers

Answer:

Seee answer below.

Step-by-step explanation:

a. k = −1

If K=-1 the equation gets this form:

(x^2/-1) -y^2=1

There aren't natural numbers that being negative, adding them, we get 1 as result. So there is no graph for this equation.

b. k = 1

(x^2/1) -y^2=1