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Dafna1 [17]
3 years ago
5

How do I simplify the radical expression. √8-4√2

Mathematics
1 answer:
WITCHER [35]3 years ago
3 0
√8 = √(4x2)  = 2√2

4√2 =4√2

2√2-4√2 = -2√2


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What is 420/15 simplified to
Ghella [55]
So,

In order to simplify a fraction, we have to factor both the numerator and the denominator.
\frac{420}{15} --\ \textgreater \   \frac{2*2*3*5*7}{3*5}

Cross out ones.
\frac{2*2*7}{1}\ or\ 28
3 0
3 years ago
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Please answer asap thanks.
Hitman42 [59]

Answer:

94cm²

Step-by-step explanation:

S = 2(lw + lh + wh)

=2(20+15+12)

=40+30+24

=94cm²

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7 0
1 year ago
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How many times larger is 9 x 10^9 than 3 x 10^-4?
andrezito [222]
The larger value is 9 x 10^9
The smaller value is 3 x 10^(-4)

Divide the larger over the smaller
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In summary so far, we got a coefficient of 3 and an exponent of 13

So the final answer is 3 x 10^13 (assuming you want scientific notation)

If you want to convert to standard notation, instead of scientific notation, move the decimal point in 3.0 thirteen spots to the right to get 

30,000,000,000,000

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8 0
3 years ago
Please explain your answer
Ymorist [56]

Answer:

51

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60-9 - add both positives 11+49=60

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7 0
2 years ago
Combine the following expressions:
melisa1 [442]

ANSWER

(4n - 1)\sqrt{3 n} + 3\sqrt{n}

EXPLANATION

The given expression is

\sqrt{48 {n}^{3} }  +  \sqrt{9n}  -  \sqrt{3n}

We remove the perfect squares under the radical sign.

\sqrt{16 {n}^{2}  \times3 n}  +  \sqrt{9n}  -  \sqrt{3n}

We can now take square root of the perfect squares and simplify them further.

\sqrt{16 {n}^{2}}   \times \sqrt{3 n} +   \sqrt{9} \times  \sqrt{n}  -  \sqrt{3n}

This simplifies to:

4n\sqrt{3 n} + 3\sqrt{n}  -  \sqrt{3n}

This further simplifies to:

(4n - 1)\sqrt{3 n} + 3\sqrt{n}

3 0
2 years ago
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