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kompoz [17]
3 years ago
13

Whoever answers this correctly get's brainiest!

Mathematics
1 answer:
Dvinal [7]3 years ago
3 0

If you are buying 8 books, 2 of them will be $7. So there are 6 remaining books, which will cost $3.50 each. 6x$3.50=21 21+7=$28

28 dollars

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Simplify: (2^2 + 3^4)−^2
Lisa [10]

\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ (2^2+3^4)^{-2}\implies (4+81)^{-2}\implies 85^{-2}\implies \cfrac{1}{85^2}\implies \cfrac{1}{7225}

5 0
3 years ago
Read 2 more answers
 tell me how to answer this please I WILL MARK BRAINLIEST
iogann1982 [59]

Answer:

It equals 3

Step-by-step explanation:

To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.

7 0
3 years ago
Peregrine falcons are known for their maneuvering ability. In a tight circular turn, a falcon can attain a centripetal accelerat
melomori [17]

Answer:

whats the qeustion sir ?

Step-by-step explanation:

i am confusion

4 0
3 years ago
Number 4 i don’t know how to do this one
Kruka [31]

Answer:

r= 3 h = 6 then use 3^2 + 6^2 = l^2

Step-by-step explanation:

3 0
3 years ago
If C4=15 and C7=14, what is the result of the logical expression C4>C7 true or false
kvasek [131]
The answer is True because just plug in the numbers

C4=15 and C7=14

logical expression

C4>C7

15>14

That reads to 15 is greater than 14, which is true
3 0
3 years ago
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