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PolarNik [594]
3 years ago
15

There are 50 books side by side on a library bookshelf. Each book is two inches thick. How far is it from the first page of book

1 to the last page of book 50?
Mathematics
1 answer:
sveticcg [70]3 years ago
3 0

Answer:

100inches

Step-by-step explanation:

50books

each book is 2 inches

50books x 2 inches per boo = 100inches

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20-%204%20%7D%7B%20%5Csqrt%7Bx%20%7B%7D%5E%7B2%7D%20-%206x%2
Nimfa-mama [501]

First of all, we can observe that

x^2-6x+9 = (x-3)^2

So the expression becomes

\dfrac{x^2-4}{\sqrt{(x-3)^2}} = \dfrac{x^2-4}{|x-3|}

This means that the expression is defined for every x\neq 3

Now, since the denominator is always positive (when it exists), the fraction can only be positive if the denominator is also positive: we must ask

x^2-4 \geq 0 \iff x\leq -2 \lor x\geq 2

Since we can't accept 3 as an answer, the actual solution set is

(-\infty,-2] \cup [2,3) \cup (3,\infty)

7 0
2 years ago
Will give 25 points if someone can answer this page
Studentka2010 [4]

Answer:

Domain = {1,2,3,4,5,6} and Range = {42,49,56,63,70,77The given function is :

y = 7x + 35

Where

x is no of members

y is the monthly cost

Your group has enough money for up to six members to joim fitness club. It means domain (the set of input values) are:

Domain = {1,2,3,4,5,6}

Put x = 1 to 6 one by one,

y = 7(1) + 35 = 42

y = 7(2) + 35 = 49

y = 7(3) + 35 = 56

y = 7(4) + 35 = 63

y= 7(5) + 35 = 70

y = 7(6) + 35 = 77

Range = {42,49,56,63,70,77}

ocabanga44 and 6 more users found this answer helpful

THANKS

4

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(2 votes)

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4

answe

6 0
3 years ago
Read 2 more answers
What is 9/12 as a decimal
UNO [17]

Answer:

.75

Step-by-step explanation:

u just do 9÷12 to find a decimal

8 0
3 years ago
Please answer this correctly
pickupchik [31]

Answer:

66.7%

Step-by-step explanation:

The factors of 18 are as listed: 1, 2, 3, 6, 9, 18

Since 1, 2, 3, and 6 are in the die, that makes 4 out of the 6 numbers.

4/6 can be simplified to .667 or 66.7%

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3 years ago
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12) Solve ly – 41 = 3.<br> O A) {1, 7}<br> O B) {-7, 7}<br> O C) {7}<br> O D) {-1}
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