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Lapatulllka [165]
3 years ago
6

Simplify this radical.

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer:

3\sqrt{10}

Step-by-step explanation:

Assuming you mean \sqrt{90}

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab} , then

\sqrt{90}

= \sqrt{9(10)}

= \sqrt{9 × \sqrt{10}

= 3\sqrt{10}

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Pick any two pairs of equations<span> from the system. Eliminate the same </span>variable<span> from each pair using the Addition/Subtraction method. Solve the system of the two new </span>equations<span> using the Addition/Subtraction method.</span>
5 0
3 years ago
If n^-2 = 1/16, then n could be which of the following?
Zepler [3.9K]

Answer:

The correct choice is

\boxed{n=4}

Step-by-step explanation:

The given equation is

n^{-2}=\frac{1}{16}

We rewrite the left hand side of the equation as a power(a number to a given exponent.

n^{-2}=\frac{1}{4^2}

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\frac{1}{a^m}=a^{-m}

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Since the exponents are the same, the bases are also the same.

Therefore n=4

7 0
3 years ago
Read 2 more answers
Angie and Kenny play online video games. Angie buys 1 software package and 3 months of game play. Kenny buys 1 software package
andrey2020 [161]

Answer:The cost of one month of game-play =$20


Step-by-step explanation:

Let the cost of one month of gameplay be x

Then cost of game-play bought by Angie =3x.....(1)

and Then cost of game-play bought by Kenny=4x......(2)

Cost of each software package =$50......(3)

The the total cost =240= sum of costs of software bought by both of them and game-play)=50+50+3x+4x

⇒240=100+7x.......→(by adding like terms)

⇒140=7x⇒x=20.....→( dividing both sides by 7 )

∴the cost of one month of game-play =$20



8 0
4 years ago
Read 2 more answers
A positive <br> B negative <br> C none<br> D multiple
egoroff_w [7]
The answer is positive because its is going in the positive column
8 0
3 years ago
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Lily has a stamp collection .she has 54 more U.S stamps than foreign stamps . she has 652 stamps in all.
NISA [10]

Answer:

foreign stamps = 299

US stamps = 353

Step-by-step explanation:

Let number of foreign stamps be x.

Given she has 54 more U.S stamps than foreign , US stamps = x +54

Total stamps = US + Foreign

652 = x + 54 + x

652 - 54 = 2x

598 = 2x

x = 299

7 0
3 years ago
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