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klemol [59]
4 years ago
8

The answer for this problem

Mathematics
1 answer:
Anna35 [415]4 years ago
8 0
3+0=3
3-0=3
I don't know that one sorry :(
5 + 11= 11 + 5
-3 + 0 = -3
-3 - 0 = -3
IDK? sorry
7 - 1 = -1 - -7
hope I helped tho :)
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In a small Library there are five non-fiction books for every nine fiction book there are 130 Non-fiction books how many fiction
vova2212 [387]

Answer:

For 130 non-fiction books, the number of fiction books can be from 270 to 278.

Step-by-step explanation:

Given that, there are 5 non-fiction books for every 9 fiction books.

Observe that, if the number of fiction books is less than 9, than there will be no no-fiction books.

So, there are 5 non-fiction books for every 9 to (9+8) fiction books

So, by elementary method, there will be 5n non-fiction books for every 9n+8 fiction books, where n is a natural number.

Or, if the number of non-fiction books is 5n, then the number of fiction books will be ranging from 9n to (9n+8).

For, 150 non-fiction books, 5n=150 or n=150/5=30.

Hence, the number of fiction books can be from 9n to (9n+8).

=9x30 to (9x30+8)

=270 to 278.

Hence, for 130 non-fiction books, the number of fiction books can be from 270 to 278.

6 0
4 years ago
55% of what number is 70? Round to the nearest tenth.
umka2103 [35]
55% of x is 70
0.55 times x=70
divide both sides by 0.55
127.27272727
round
127.3
5 0
4 years ago
Read 2 more answers
5a+4c-b<br><img src="https://tex.z-dn.net/?f=5a%20%2B%204c%20-%20b%20" id="TexFormula1" title="5a + 4c - b " alt="5a + 4c - b "
Tatiana [17]
Hi,

5a + 4c - b = 5a + ( - 4bc) \\ 5a - 4bc = 1abc

Hope this helps.
r3t40
8 0
3 years ago
Find the island height of a pyramid with a volume of 432 ft^3 if the base is a square with a side length of 12 ft. Round to the
dmitriy555 [2]

So the picture below shows what the slant height is. It also shows that the pyramid can form a right triangle, in which we can use the pythagorean theorem, which is leg^2+leg^2=hypotenuse^2 .

But first, we have to find the height of this pyramid. The volume formula for a square pyramid is A=\frac{lwh}{3} . Since we know its a square pyramid, the length and width are going to be the same (12 ft), and we know that the volume is 432 ft^3. Using this info, we can solve for the height:

432=\frac{12*12*h}{3}\\ 1296=12*12*h\\ 1296=144*h\\ 9=h

So now we can use the pythagorean theorem (remember to split the 12 by 2, since the right triangle has only half the length of the base). Our equation will be solved as such:

6^2+9^2=s^2\\ 36+81=s^2\\ 117=s^2\\ 10.8=s

In short, the slant height is 10.8 ft.

3 0
3 years ago
Help due today asap Plaese help
fomenos

Answer:

A

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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