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Kipish [7]
3 years ago
11

Plz answer my question

Mathematics
1 answer:
likoan [24]3 years ago
8 0

Step-by-step explanation:

a -  \frac{1}{a}  \\  \frac{ {a}^{2} - 1 }{a}  \\  =  \frac{ {(2 +  \sqrt{3} )}^{2}  - 1}{2 +  \sqrt{3} }  \\  = \frac{7 + 4 \sqrt{3} - 1 }{2 +  \sqrt{3} }  =  \frac{6 + 4 \sqrt{3} }{2 +  \sqrt{3} }  = 2 \sqrt{3}

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Match the expression to the correct property that is shown.
Harrizon [31]

Answer:

This is a help site, so I'll explain each property and see if you can match them yourself.

Associative property of addition, you can add 3 or more different numbers any which way, the sum will be the same.

Commutative Property of Addition - same as the associative property but with 2 numbers.

Identity Property of Multiplication - Any number multiplied by one is itself

Multiplicative Property of Zero: x * 0 = 0

Associative Property of Multiplication - Same as that of addition, yet with multiplication.

Distributive Property: Factoring Out.

EX: (12 x 15) = 3(4 x 5)

3 0
3 years ago
Doah builds a gardening shed for her father's birthday. Based on the measurements below, what is the volume of the shed Doah bui
san4es73 [151]

Answer:

cant see whats below so i cant exactly help wothout it

Step-by-step explanation:

i said it was so and so it was

4 0
3 years ago
Options <br> A. 1/49 <br> B.1/14<br> C.49<br> D.14
grigory [225]

\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}\\\\ 7^{-\frac{5}{6}}\cdot 7^{-\frac{7}{6}}\implies 7^{-\frac{5}{6}-\frac{7}{6}}\implies 7^{\frac{-5-7}{6}}\implies 7^{\frac{-12}{6}}\implies 7^{-2}\implies \cfrac{1}{7^2}\implies \cfrac{1}{49}

5 0
3 years ago
How are percentage greater than 100% used in real world contexts
Sphinxa [80]
Think of investments. If you were to invest $100 into a company and receive $200 dollars, then you would have made $100 in profit, which is 100% of your initial amount. So, if you were to invest $100 and receive $250 dollars in profit, then you would have made an extra $150, which is even more than your initial amount of $100. In this case, you would have made a 150% increase on your money. 
6 0
4 years ago
Solve 3/w = 25/100 what does w equal
bekas [8.4K]
You can do cross multiplication to get,

300 = 25w

then just divide by 25 to get,

w = 12
3 0
3 years ago
Read 2 more answers
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