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3 years ago

5

You select every tenth student on an alphabetical list of the students in your school. You survey the selected students in their

first-period classes. Is this question bias or not?

1 answer:

GalinKa [24]3 years ago

7 0

Answer:

no it is not biased because it is randomly selected although in alphabetical order.

Step-by-step explanation:

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Y= - x+2 Y=3x-4<br> Estimate the solution to the system of equations

IrinaVladis [17]

Answer:

$x=\frac{3}{2}\\ y=\frac{1}{2}$

Step-by-step explanation:

$y=-x+2\\y=3x-4$

Let's solve one of them for x.

$y=3x-4$

Add 4

$y+4=3x$

Divide by 3.

$x=\frac{y+4}{3}$

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.

$x=\frac{y+4}{3}$

$x=\frac{(-x+2)+4}{3}$

$x=\frac{-x+2+4}{3}$

$x=\frac{-x+6}{3}$

Multiply by 3 to get rid of the denominator.

$3x=-x+6$

add x

$3x+x=6$

Combine like terms;

$4x=6$

Divide by 4.

$x=\frac{6}{4}$

Simplify.

$x=\frac{3}{2}$

Now that you found the value of x, replace it in any of the equations to find y.

$y=-x+2\\y=-(\frac{3}{2})+2\\ y=-\frac{3}{2}+2$

$y=\frac{-3+2*2}{2} \\y=\frac{-3+4}{2} \\y=\frac{1}{2}$

Proof:

$y=3x-4\\\frac{1}{2}=3(\frac{3}{2})-4\\\frac{1}{2}=(\frac{9}{2})-4$

$\frac{1}{2}=\frac{9-4*2}{2}$

$\frac{1}{2}=\frac{9-8}{2}$

$\frac{1}{2}=\frac{1}{2}$

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3 years ago

He first five multiples for the numbers 4 and 6 are shown below.

weeeeeb [17]

Answer:

12

Step-by-step explanation:

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3 years ago

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Richard estimates that he can apply fertilizer to 4,486 square feet of grass in 3/4 hour. How many square feet of grass can Rich

Scrat [10]

( PLEASE GIVE BRAINLIEST) 4,486/1 and 3/4 I would do division and use the butterfly method which gets you 1121.5/3 simplified to 373.83 feet per hour

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3 years ago

Find the difference (10m+3)-(4m-2)

pshichka [43]

Answer:

6m + 5

Step-by-step explanation:

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3 years ago

Plz help me I rlly need it!

Maurinko [17]

1. 9 is the mode
2. 17.7 is the mean
3. 25.5 is the median
4. mean > median
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3 years ago