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elixir [45]
3 years ago
14

Determine whether the following sample may be biased and explain.

Mathematics
1 answer:
Alex3 years ago
7 0
I think it is C., since they are not a group of friends or people he personally knows, just 100 people out of everyone attending his school, I think that is unbiased and has a widespread enough population.
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Find the slope of the line using the points (0,4) and (-3,6)
Anna007 [38]

slope = - \frac{2}{3}

calculate the slope m using the gradient formula

m= (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (- 3, 6)

m = \frac{6-4}{-3-0} = \frac{2}{-3} = - \frac{2}{3}


4 0
2 years ago
Read 2 more answers
Mrs. Bendit’s 1st Block class has 28 students. There are 7 girls in the class. What percent of boys are in the class?
Gemiola [76]

Answer:

Boys: 75%

Girls: 25%

Step-by-step explanation:

Total: 28 Students: 100%

7 Girls in clas

28(total)-7 (girls)= 21 Boys in class

__________________

If we divide the amount  boys OR girls ( depending on which gender) after the toal and move the decimal to the right twice after dividing) we will get our answer.

Formula:

(Amount of Boy or girls) = x

X/28

So since we are trying to get the percentages of boys, we will replace X with the amount of boys

21/28 = .75 ( then move the decimal to the right TWICE) =  75  

Then you should get your percentages: 75%  Also if your lookings for girls percentages, you basically subtract 75 ( boys percentages) with the total percentages ( 100) then you should get your answer for the girls: 25%

7 0
2 years ago
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Select the equation and solution for the problem. Let x represent the unknown number.
Alinara [238K]
Answer

I am positive it us 4x = 14 I truly apologize if it's not.
Step-by-step explanation

8 0
2 years ago
What is -3m + 5m = -14? With work provided
lara [203]

Answer:

-7

Step-by-step explanation:

-3m+5m=-14

2m=-14

divide both sides by 2

m=-7

5 0
2 years ago
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Solve (x-3)^2 =5 completing the square
otez555 [7]

Answer:

x = 3 ± √5

Step-by-step explanation:

The expression (x - 3)² = 5 doesn't need completing the square to solve (this is the step after you finish completing the square):

Step 1: Square root both sides

x - 3 = ±√5

Step 2: Add 3 to both sides

x = 3 ± √5 = 0.76392, 5.23607

3 0
3 years ago
Read 2 more answers
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