A popular teacher at a school asks a sample of students if they would be interested in taking class next year. Of the students ​asks, ​85% are in one of her classes this year. Only 15 ​% of the students in the school are in one of in classes this year. Will this sample be​ biased?

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Answer 1

Answer:

who write the our national anthem


Related Questions

476 Marks
boole
Calculate the area of this triangle.
17 cm
8 cm
15 cm

Answers

Answer:

Step-by-step explanation:

sides =8 cm, 17 cm and 15 cm

Area of triangle by Hero's Formula,

S=a+b+c/2

S=17+8+15/2

S=40/2

S=20

A=[tex]\sqrt{s(s-a)(s-b)(s-c)}[/tex]

A=[tex]\sqrt{20(20-17)(20-8)(20-15)}[/tex]

A=[tex]\sqrt{(20)(3)(12)(5)}[/tex]

A=[tex]\sqrt{3600}[/tex]

A=60 [tex]cm^{2}[/tex]

plz help!!!!!!!!!!!!!!!!!!!!!

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Answer:

a) direct

b) $3

c) y = 3x

d) To buy 4 pens it costs $12

e) 8 pens

which choice is NOT a good example of a line of best fit?​

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Answer:

B

Step-by-step explanation:

it's not touch the Y axis nor the X axis?

B because when you look at the lines it becomes in a triangle i dont know what i said i just answered for points

A line passes through (10,2) and (14,-22). Write the equation of the line in standard form.

Answers

Answer:

The equation of the line in standard form is:

[tex]6x + y = 62[/tex]

Step-by-step explanation:

Given the points

(10,2)(14,-22)

Determining the slope between (10, 2) and (14, -22)

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(10,\:2\right),\:\left(x_2,\:y_2\right)=\left(14,\:-22\right)[/tex]

[tex]m=\frac{-22-2}{14-10}[/tex]

[tex]m=-6[/tex]

The point-slope form of the line equation is  

[tex]y-y_1=m\left(x-x_1\right)[/tex]

where

m is the slope of the line(x₁, y₁) is the point

substituting the values m = -6 and the point (10, 2) in the point-slope form of the line equation

[tex]y-y_1=m\left(x-x_1\right)[/tex]

[tex]y - 2 = -6(x - 10)[/tex]

[tex]y - 2 = -6x +60[/tex]

adding 2 to both sides

[tex]y-2+2 = -6x + 60 + 2[/tex]

[tex]y = -6x + 62[/tex]

We can write the equation in the standard form such as

Ax + By = C

Thus,

[tex]y = -6x + 62[/tex]

adding -6x to both sides

[tex]6x + y = -6x + 62 + -6x[/tex]

[tex]6x + y = 62[/tex]

Therefore, the equation of the line in standard form is:

[tex]6x + y = 62[/tex]

1) Four students used a stopwatch to see how fast they could run around the perimeter of the playground. They recorded their times in the chart below. Which student took the least amount of time around the playground?
Bobby 52.36 sec.
Billy 52.036 sec.
Jill 52.31 sec.
Martha 52.16 sec.

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The answer should be B

2 x 4 = _x2 commutative property

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Answer:

2 by 4 is equal to 4 by 2 (2x4=4x2)

Can you please help me?!

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Answer:

you can travel 5 miles in 1 hr

Step-by-step explanation:

20/4 = 5

5 miles per hour
This is becuase 20 / 4 = 5

Please help me it’s really a struggle help help help

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the answer is 46.2:)

Answer:46.2

Step-by-step explanation:

there is 2 parts to this question pls answer both!

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Sales tax is 3.5 dollars
Final sale price would be 53.50 dollars

Hope it helps

What is the y-intercept in the equation y = 65x + 35 ?

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I hope this helps. The intercept is Y=35

A line that includes the points (4,10) and (7,3) what is the equation in point slope form

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M = y2-y1/x2-x1
M = 3-10/7-4
M = -7/3

2. In April, it rained 1/4 of an inch on 15 different days. How many inches of rainfall
in April?

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3.75 inches in april

Compute $\sqrt{0.5625}$. Express your answer as a decimal.

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Answer:

0.75

Step-by-step explanation:

We have\begin{align*}

\sqrt{0.5625} &= \sqrt{\dfrac{5625}{10000}}\\

&= \dfrac{\sqrt{5625}}{\sqrt{10000}}\\

&= \dfrac{\sqrt{25\cdot 225}}{100}\\

&= \dfrac{\sqrt{25}\cdot \sqrt{225}}{100}\\

&=\dfrac{5\cdot 15}{100}\\

&=\boxed{0.75}.\end{align*}

The Square root of 0.5625 is 0.75.

What is Square Root?

A number can be obtained by multiplying the square root of that integer by itself. The word "square root" is represented by the symbol "sqrt"—square root of, end square root. The opposite of squaring an integer is finding its square root.

Given:

We have to find the square root of (0.5625).

So, 5625 can factorize as

= 5625

= 5 x 5 x 5 x 5 x 3 x 3

Now, making the pairs as

= (5 x 5) x (5 x 5) x (3 x 3)

= 5 x 5 x 3

= 75

So, the root of 0.5625 in decimal is 0.75.

Learn more about Square Root here:

https://brainly.com/question/29286039

#SPJ2

DO ALL 4 QUESTIONS FOR BRAINLY SHOW WORK.

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A) reflection B)rotation C) translation D) reflection

PLZZZZ HELLP MEEEEEEEEE IL GET U BRIANIEST
(or whatever its called)
what value of y makes the equation true -6( y + 15) = -3y + 6

Answers

Answer:

-32

Step-by-step explanation:

do you need me to explain?

Answer:

y = -32

Step-by-step explanation:

thanks for helping me

Divide. Then, check your work with multiplication. 2.8/ 16

Answers

ANSWER: 0.175

you check by multiplying 0.175 and 16 together
when you do this you get 2.8

Hope this helps. :)

HELP!! 4. (01.02 MC)
Which number line shows the solution to -3- (-1)? (1 point)
o

Answers

Answer:

The third choice gives the correct sequence.

Step-by-step explanation:

The Number Line

To represent numbers in the line, we use arrows starting from the mark for zero up to the given number. If the number is positive, the arrow points to the right and if the number is negative, the arrow points to the left.

The number -3 must be represented as an arrow to the left side of length 3. Subtracting something from the number should also point to the left side, but if the number is negative, then the new arrow points to the right side.

To subtract -1, the arrow should point to the right starting from -3

The third choice gives the correct sequence.

Math hw please hellppp if u can also explain it that would be nice lol bc I'm confused ​

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5. NO SOLUTIONS

6. INFINITE MANY

I'm really sorry if the pic is kinda confusing lol

the cut part is "subtract 3x both sides of the equation"

a symbol that represents and unknown quantity is called ??

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Answer:

Variables

Step-by-step explanation:

the answer is a variable

5/8 + 3/4 / -2/3- 5/6

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Answer:

-11/12

Step-by-step explanation:

SOMEONE PLEASE HELP ME SOLVE THIS PLEASE PLEASE PLEASE

Answers

Answer:

x=1?

I don't really know

The answer would be x=1

Kayla is an operator. She takes 2 calls every 13 minutes. How many calls can she expect to receive in one hour?

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Answer: 390 calls

Step-by-step explanation:

13/2= 6.5

6.5 x 60 min= 390

The endpoints of QR are
Q(1, 6) and R(-7, 3). Find the coordinates of the midpoint M.

Answers

Answer:

[tex]\displaystyle (-3,\frac{9}{2})[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Coordinates (x, y)Midpoint Formula: [tex]\displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]

Step-by-step explanation:

Step 1: Define

Endpoint Q(1, 6)

Endpoint R(-7, 3)

Step 2: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Substitute in points [Midpoint Formula]:                                                        [tex]\displaystyle (\frac{1-7}{2},\frac{6+3}{2})[/tex][Fractions] Subtract/Add:                                                                                      [tex]\displaystyle (\frac{-6}{2},\frac{9}{2})[/tex][Fraction] Divide:                                                                                             [tex]\displaystyle (-3,\frac{9}{2})[/tex]

helppppppppp pleaseeeeee

Answers

Answer:

Yo solo pongo esta respuesta que no dice nada porque busco puntiooooooos

Thirty points When plotting points on the coordinate plane below, which point would lie on the x-axis?



(6, 0)
(0, 2)
(3, 8)
(5, 5)

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Answer:

(6,0)..............................

can someone give me the answers to these

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First we know that a^2+b^2=c^2. We only know a and c so we are trying to find b. You square both numbers and subtract.

13^2 - 8^2=105. Then what you do is square root. √105=10.24695077

Then depending on how many significant figures or decimal places it says you round


(By the way its really hard to understand the numbers ,so the numbers i put might be wrong im not sure. Are they 13 and 8?)

You have found a home that you are interested in purchasing. Instead of a conventional loan, you agree to pay the premium for the private mortgage insurance (PMI), which finances 95% of the loan. The amount of the home is listed at $125,000. From the given information, determine the amount needed for the down payment to qualify for the PMI loan.

a.
$6,250
c.
$625
b.
$118,750
d.
$62,500

Answers

Answer:

a.

$6,250

Step-by-step explanation:

Finances 95% of the loan.

So you have to pay 100% - 95% = 5% of the loan.

The amount of the home is listed at $125,000.

You have to pay 5% of this. So

0.05*125000 = $6,250

The answer is given by option A.

Select all the expression that have the same value

1: 2^4

2: 2^6

3: 2^8

4: 4^3

5: 8^2

6: 8^8

Answers

Answer:

#2, 4, and 5 all have the same value of 64

Step-by-step explanation:

1) 16

3) 256

6) 16,777,216

Please help !!!!!!!!!!!

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Answer: 6) x= 17 Same side interior angles sum to 180.

7) x= 3 Alternate exterior angles are equal.

8) x= 35 Corresponding angles are equal.

9) x= 12 Alternate interior angles are equal

Step-by-step explanation:

6) x= Same side interior angles sum to 180.

53+(8x-9)= 180

44+8x= 180

Subtract 44 from both sides

8x= 136

Divide both sides by 8

X = 17

7) x= Alternate exterior angles are equal. 15x+29= 26x-4

Subtract 15x from both sides

29= 11x-4

Add 4 to both sides

33= 11x

Divide both sides by 11

X=3

8) x= Corresponding angles are equal.

4x+7= 6x-63

Subtract 4x from both sides

7 = 2x -63

Add 63 to both sides

70= 2x

Divide both sides by 2

X= 35

9) x= Alternate interior angles are equal

9x+37= 14x-23

Subtract 9 x from both sides

37= 5x -23

Add 23 to both sides

60= 5x

Divide both sides by 5

12=x

Clarissa and Skip work at a bakery making doughnuts. Clarissa has
1 doughnut and is making 1 doughnut an hour. Skip has 10
doughnuts made and is selling 2 doughnuts each hour. After how
much time will they have the same number of doughnuts? How
many doughnuts will that be?

Answers

Answer:

dead

Step-by-step explanation:

he died from food poisoning

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