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valina [46]
2 years ago
3

Greta, who is in seventh grade, asks her classmates Pete, Rob, Mark, Maria, and Sharon about their favorite books. Four of the f

ive say their favorite book is The Adventures of Huckleberry Finn. From this data, Greta concludes that most seventh-grade students like this book.
Mathematics
2 answers:
Gekata [30.6K]2 years ago
7 0
The answer is biased but not relavent

finlep [7]2 years ago
7 0

Step-by-step explanation:

Greta’s sample is Biased . The generalization made from the sample is Not Valid .

This is because Greta only asked HER classmates and not from other classes. Besides, that sample if too small for a population as big as most 7th graders. (I got this right in my test from Edmentum). Hope I Helped!!! :)

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Find the inverse of the function. y = 2x2 –4
Alex73 [517]

Answer:

The inverse function is y=\sqrt{\frac{x+4}{2}}


Step-by-step explanation:

The given function is y=2x^2-4.


This function is only invertible on the interval, x\ge 0.


To find the inverse on this interval, we interchange x and y.

x=2y^2-4


We now make y the subject to get,


x+4=2y^2


\Rightarrow \frac{x+4}{2}=y^2


\Rightarrow \pm \sqrt{\frac{x+4}{2}}=y


But the given interval is x\geq 0, This implies that, y\geq 0.


y=\sqrt{\frac{x+4}{2}}


4 0
2 years ago
Read 2 more answers
Write a expression that shows 3 times the sixth power of 10
user100 [1]
(10 raised to the power of 6)×3     

(10*6) ×3
8 0
2 years ago
Tom saves $750 a year. Bill saves $60 a month. How much more does Tom save a year than Bill?
wlad13 [49]

Answer:

B) 30

Step-by-step explanation:

Bill saves 60 dollars a month so first you have to find out how much he saves in a year

To find that you multiply 60 by 12 since there are 12 months in a year

60*12 = 720

Tom saves 750 in a year so you have to subtract 750 by 720 to know how much more tom saves

750 - 720 = 30

3 0
2 years ago
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If ce = 7x+4, find the value of x
Kryger [21]

Answer:

x = \frac{y}{7} - \frac{4}{7}

Step-by-step explanation:

Since it will be easier, just set "ce" as one term. Let ce = y

You are solving for the variable, x. Note the equal sign, what you do to one side, you do to the other.

Do the opposite of PEMDAS.

First, subtract 4 from both sides:

y = 7x + 4

y (-4) = 7x + 4 (-4)

y - 4 = 7x

Next, Divide 7 from both sides:

(y - 4)/7 = (7x)/7

(y - 4)/7 = x

x = (y/7) - (4/7)

Your value of x is \frac{y}{7} - \frac{4}{7}

~

4 0
2 years ago
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there are two pizzas. conor ate 1⁄4 of a pizza, brandon 2⁄8, tyler 3⁄4, and audrey 4⁄8. who ate the most of the two pizzas? a. a
Sindrei [870]
The best way to determine which among the fractions has the greatest value, convert all of them to their decimal equivalents. To do so, divide the numerator by the denominator. Conor ate 0.25 of the pizza, Brandon also 0.25, Tyler 0.75, and Audrey 0.5. Thus, the answer is letter "B. Tyler".
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2 years ago
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