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2 years ago

12

You want to find out what the favorite hot lunch in the school cafeteria is among the high school students. At an assembly for t

he whole school you decide to survey all students who are sitting on the end of their rows in the auditorium. What type of survey are you conducting?

1 answer:

almond37 [142]2 years ago

6 0

<span>1.d
2.c
3.b
4.d
5.b
Just took the Samples and Surveys test!
</span>

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Year Number of Dropouts 1 7 2 8 3 6 4 6 5 6 6 4 7 4 8 1 9 2 10 7 11 6 12 1 13 1 14 1 15 3 16 3 17 5 18 4 19 5 20 7 The table giv

nadya68 [22]

Population mean = (7+8+6+6+6+4+4+1+2+7+6+1+1+1+3+3+5+4+5+7) / 20 = 87/20 = 4.35 <==

sample mean = (4+5+7) / 3 = 16/3 = 5.33 <==

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3 years ago

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Please show your work and explain it.

Maru [420]

Answer:

$f(x)=\dfrac{x+2}{2(x-2)}$

Step-by-step explanation:

Remember when you divide fractions, you need to get the reciprocal of the divisor and multiply. So your first simplification would be:

$\dfrac{x^2+4x+4}{x^2-6x+8}\div\dfrac{6x+12}{3x-12}\\\\=\dfrac{x^2+4x+4}{x^2-6x+8}\times\dfrac{3x-12}{6x+12}\\\\=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}$

Next we factor what we can so we can further simplify the rest of the equation:

$=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}\\\\=\dfrac{(x+2)(x+2)(3x-12)}{(x^2-6x+8)(6(x+2))}\\\\$

We can now cancel out (x+2)

$=\dfrac{(x+2)(3x-12)}{(x^2-6x+8)(6)}$

Next we factor out even more:

$=\dfrac{(x+2)(3)(x-4)}{(x-2)(x-4)(6)}$

We cancel out x-4 and reduce the 3 and 6 into simpler terms:

$=\dfrac{(x+2)(1)}{(x-2)(2)}$

And we can now simplify it to:

$=\dfrac{x+2}{2(x-2)}$

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3 years ago

Need help with math.

nikdorinn [45]

4 / (1/4 - 5/2)

4 / (1/4 -10/4)

4 / (-9/4)

4 x (-4/9) = -16/9

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2 years ago

Which property explains the step shown in solving the equation?8x − 15 + 6x = 10x − 18 ⇒ 8x + 6x − 15 = 10x − 18

vlada-n [284]

Answer:

Taybrownies1359Step-by-step explanation:

np

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2 years ago

MULTIPLY POLYNOMIALS <br> (8p-2)(6p+2)

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$(8p-2)(6p+2)=8p\cdot 6p+8p\cdot 2-2\cdot 6p -2\cdot 2=\\ \\ =48p^2+16p-12p-4=48p^2+4p-4$

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3 years ago

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