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3 years ago

Can the square root of 130 be simplified.

2 answers:

7 0

now were going to factor out 130, and according to that principle, any numeral needs a pair to be pulled to the outside of the radical. 

130 breaks down to 10 x 13 
13 is prime so leave it, 10 breaks down to 5 x 2. 
We have 13 x 5 x 2 and no pairs. Sqr root of 130 is already as simplified as possible. Use a calculator for an approximation. 11.40

avanturin [10]3 years ago

4 0

$No,\ because\ 130=2\cdot5\cdot13.\\\\\sqrt{130}\ is\ irrational\ number,\ cannot\ be\ simplified.$

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3 years ago

If 10 pencils and 7 erasers cost $4.23 and 3 pencils and 1 eraser cost $0.95, what is the cost of 2 erasers?

QveST [7]

Answer: $0.58

Step-by-step explanation:

Let x represent pencil and y represent eraser

10x + 7y = 4.23 → 1(10x + 7y = 4.23) → 10x + 7y = 4.23

3x + y = 0.95 → -3(3x + y = 0.95) → -21x - 7y = -6.65

-11x = -2.42

÷-11 ÷-11

x = 0.22

3x + y = 0.95

3(0.22) + y = 0.95

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8 0

4 years ago

Write an algebraic expression for the phrase the sum of g and 3

Paraphin [41]

The sum of g and 3.

The sum of two values is added together.

g+3

You would add g to 3 since it is their sum the statement is asking for.

I hope this helps!
~kaikers

3 0

3 years ago

If the area of a square is 1 square meter, how many centimeters long is each side?

Rufina [12.5K]

Square meters to square centimeters metric area units conversion factor 10000. To find out how many square centimeters in sq. meters, please use the converter below.

1 Sq. Meter = 10 000 Sq. Centimeters

Sq. meter is an area unit in metric system and used widely in measuring the small lands, floor plans etc. It equals to 10.7639104 sq. feet. The abbreviations are "m2" or "sq m".

Sq. centimeter is an area unit in metric system and defined as the area of a square whose sides are exactly one centimeter in length. It equals to 0.15500031 sq. inch. The abbreviations are "cm2" and "sq cm".

Please let me know if you need additional help in private messages.

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4 0

3 years ago

A box contains balls numbered 3 through 15.

Phantasy [73]

Answer: 6/13

Step-by-step explanation:

A box contains balls numbered 3 through 15. This means that the sample space = {3 , 4 ,5 , 6 ,7, 8, 9, 10, 11, 12, 13, 14, 15,}

The total number of sample space = 13

Therefore : the probability of picking 3, 5, 9, 11, 12, 15 , will be the total number of times they appear in the sample space divided by the number of sample space.

number of times 3 appears = 1

number of times 5 appear = 1

number of times 9 appear = 1

number of times 11 appear = 1

number of times 12 appear = 1

number of times 15 appear = 1

All together , they appeared 6 times

Therefore : the probability of picking one of the numbers = 6/13

8 0

3 years ago