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Snowcat [4.5K]
3 years ago
10

Combine the radicals -2 Square root 13 + 19 Square root 13

Mathematics
1 answer:
Alina [70]3 years ago
3 0
The answer is 6.8383838
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kolezko [41]
In math, "of" almost always means "times".

So your question is:  3/7 times (the number) = 9

Multiply each side of that equation by  7 :   3 times (the number) = 63

Divide each side by 3 :             <em> The number = 21</em>
3 0
3 years ago
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Write this expression so that its denominator, if any, is a positive integer.<br> 2/(3+sqrt(7))
Tanzania [10]

Answer:

The Answer is 3 - sqrt7

Step-by-step explanation:

2/3 + sqrt7   the starting equation

You multiply it by the conjugate which is 3 - sqrt7

= 2(3 - sqrt7) / (3 + sqrt7) (3 - sqrt7)  the equation after you multiply by 3 - sqrt7

(3 + sqrt7) (3 - sqrt7) = 2

= 2(3 - sqrt7) / 2    the equation after you simplify (3 + sqrt7) (3 - sqrt7)

Divide out the 2's

= 3 - sqrt7/1    the equation after you divide out the 2's

= 3 - sqrt7  is THE ANSWER

7 0
2 years ago
What number does y stand for in this equation?<br> 2y - 7 = 35
timama [110]

Answer:

y stands for 21 in this equation.

Step-by-step explanation:

2y - 7 = 35

2y = 42

y = 21

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3 years ago
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What is the surface area.
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The surface area in this equation is 5x4 which is 20
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Can 7in and 1lb be in the same unit
monitta

Answer:

Yes

Here you gooooooo

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