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3 years ago

An expression is shown below: square root of 18 plus square root of 2 Which statement is true about the expression? URGENT

Mathematics

2 answers:

goldenfox [79]3 years ago

3 0

Answer:

It is irrational and equal to 4 multiplied by the square root of 2.

Therefore, option d is true.

Step-by-step explanation:

As the expression is

'square root of 18 plus square root of 2'.

i.e. $\sqrt{18}+\sqrt{2}$

Lets solve the expression

$\sqrt{18}+\sqrt{2}$

$=3\sqrt{2}+\sqrt{2}$ ∵ $\sqrt{18}=3\sqrt{2}$

$\mathrm{Add\:similar\:elements:}\:3\sqrt{2}+\sqrt{2}=4\sqrt{2}$

$=4\sqrt{2}$

$=5.65685\dots$ (in decimal place)

5.65685 indicates that it is irrational and can not be written in the form p/q

Thus, it is irrational and equal to 4 multiplied by the square root of 2.

Therefore, option d is true.

kupik [55]3 years ago

3 0

Answer:

I think it is D

Step-by-step explanation:

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murzikaleks [220]

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Step-by-step explanation:

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What is the value of x + 3/4 when x=1/8

White raven [17]

Answer: 7/8

Step-by-step explanation: This is a substitution problem, from the expression x + ³/₄, where x = ¹/₈, we now replace or substitute for x and then solve the expression fractionally, the expression now becomes

¹/₈ + ³/₄

Now , find the l. c. m. of the denominator 8 and 4

1 + 6

= _____

= 7/8

NOTE: To get 1 and 6, you find out how many times 8 can go in the l. c. m. and later multiplied the number of times by the numerator which = 1.

And the number of times 4 can go in the l. c. m. (8) which is 2 times then multiplied by the numerator (3) = 6.

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3 years ago