2 years ago

What is 59.69 written in standard form?

Mathematics

1 answer:

White raven [17]2 years ago

3 0

It would be written as:

50+9+0.60+0.09

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2 years ago

Simplify the expression fraction with numerator of the square root of negative four and denominator of the quantity three plus i

Alex787 [66]

Answer:

$\frac{-4+2i}{5}$

Step-by-step explanation:

We are given the expression, $\frac{\sqrt{-4}}{(3+i)-(2+3i)}$

On simplifying, we have,

$\frac{2i}{3+i-2-3i}$

i.e. $\frac{2i}{1-2i}$

Now, we will rationalize the expression,

i.e. $\frac{2i}{1-2i}\times \frac{1+2i}{1+2i}$

i.e. $\frac{(2i)\times (1+2i)}{(1-2i)\times (1+2i)}$

i.e. $\frac{2i+4i^{2}}{1-4i^{2}}$

Since, $i^{2}=-1$ , we get,

i.e. $\frac{2i-4}{1+4}$

i.e. $\frac{-4+2i}{5}$

So, the simplified expression is $\frac{-4+2i}{5}$ .

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3 years ago

135.99 rounded to two significant figures

gladu [14]

Answer:

1.3×10^1

Step-by-step explanation:

For this, you need to use scientific notation

First, let's round up the decimal points

135.99 = ~ 136

1.3 ×.10^1

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2 years ago