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svetoff [14.1K]
3 years ago
8

Which expression is equivalent to sqrt 120x?

Mathematics
2 answers:
Volgvan3 years ago
6 0

Answer:

a. 2\sqrt{30x}

Step-by-step explanation:

We have been given a radical expression and we are asked to choose the correct option that is equivalent to our given expression.

\sqrt{120x}

Let us pull out perfect square from our radical expression.

We can rewrite our given expression as:

\sqrt{4*30x}

Since square root of 4 is 2, so we can pull out 2 from our radical expression.

2\sqrt{30x}

Therefore, the expression 2\sqrt{30x} is equivalent to our given expression and option a is the correct choice.  

adelina 88 [10]3 years ago
4 0
The answer would be A) 2 sqrt 30x 
just took test:) brainly plz maybe but A is answer

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A rectangle with sides measuring x in. and 4x-1 in. has an area of 663in.^2. What are the dimensions of the rectangle?
serious [3.7K]

9514 1404 393

Answer:

  13 in by 51 in

Step-by-step explanation:

The area is the product of the dimensions, so is ...

  663 = x(4x -1)

  4x^2 -x -663 = 0 . . . . . . subtract 663 to put in standard form

Using the quadratic formula, we can find the solutions.

  x = (-(-1) ±√((-1)^2 -4(4)(-663)))/(2(4))

  x = (1 ± √10609)/8 = (1 ±103)/8

Only the positive solution is of any use in this problem, so ...

  x = 104/8 = 13

  4x-1 = 4(13)-1 = 51

The dimensions of the rectangle are 13 inches by 51 inches.

__

I find it easiest to solve these using a graphing calculator.

8 0
3 years ago
How many solutions does the equation 3x+15=2x+10+x+5 have
sveticcg [70]

Answer:

Infinite

Step-by-step explanation:

3x+15=2x+10+x+5

grouping

3x+15=3x+15

If you have a equation where both sides are the exactly the same, the solutions are infinite. This is written as: x€ℝ

3 0
2 years ago
I need help with this is it yes or no?
n200080 [17]

Answer:

No.

Step-by-step explanation:

Try the vertical line test. If the lines intersect or connect at some point, then it's not a function. Do you want to practice with some Ixls to help, or use some images for reference?

4 0
3 years ago
What is 2 1/6 - 3 4/9?
vodomira [7]
To solve the question, first factorize both fraction,which makes:

2 1/6 - 3 4/9
= 2/6 - 12/9
= 1/3-4/3
= -3/3
= -1

Hope ot helps!
8 0
3 years ago
Which statements apply to the ratio of rice and water? Choose two options.
katrin [286]
The values cannot be labeled as dependent or independent without a givin equation
5 0
2 years ago
Read 2 more answers
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