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deff fn [24]
3 years ago
11

Can someone help with these two questions?

Mathematics
2 answers:
Effectus [21]3 years ago
5 0

Answer:

4. x = 7

5. A

Step-by-step explanation:

you can't use a calculator ?

4.

x² = 49

x = 7

5.

sqrt(4) = 2

triple root (8) = 2

sqrt(16) = 4

only sqrt(2) is a never-ending sequence of digits without any repeating pattern after the decimal point. and that is the meaning of irrational numbers. they can never be described by an expression a/b, where a and b are integer numbers.

Vlad1618 [11]3 years ago
4 0
Answer is going to be x=2
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What is the solution to 3 times the square root of 4 minus 2 times the square root of 4? A. 0 B. 1 C. 2 D. 3
olasank [31]

For this case we have the expression:

"the square root of 4" is represented algebraically as:

\sqrt {4}

Then, we can express the given statement as:

3 \sqrt {4} -2 \sqrt {4} =

They are similar terms, we can subtract:

3 \sqrt {4} -2 \sqrt {4} = \sqrt {4} = \sqrt {2 ^ 2}

By definition of power properties we have that:

\sqrt [n] {a ^ n} = a ^ {\frac {n} {n}} = a

Then the expression is reduced to:

\sqrt {2 ^ 2} = 2

Answer:

3 \sqrt {4} -2 \sqrt {4} = 2

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