All categories

3 years ago

Which expression is equivalent to (2−√−4)+(1+√−49)? 3−5i 3+5i 8+0i −2+0i

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

3 0

Answer:

3 + 5i.

Step-by-step explanation:

(2−√−4)+(1+√−49)

√−4 = 2i and

√−49 = 7i.

So (2−√−4 + (1+√−49

= ( 2 - 2i) + (1 + 7i)

= 3 + -2i + 7i

= 3 + 5i.

You might be interested in

What is a risk management plan?

Ira Lisetskai [31]

a document that a project manager prepares to foresee risks, estimate impacts, and define responses to issues. It also contains a risk assessment matrix.

6 0

3 years ago

Read 2 more answers

2/0 = 32/48 = 30/0. What number shpuld come in place of the zeros?

Anton [14]

Answer:

$\sf \dfrac{2}{3} = \dfrac{32}{48} = \dfrac{30}{45}$

$\sf \rightarrow \dfrac{2}{x} = \dfrac{32}{48}$

$\sf \rightarrow 2(48)= {32x}$

$\sf \rightarrow 32x= 96$

$\sf \rightarrow x = 3$

<u /> $\rightarrow \sf \dfrac{32}{48} = \dfrac{30}{y}$

$\rightarrow \sf {32y} = 30(48)$

$\rightarrow \sf {32y} = 1440$

$\rightarrow \sf y = 45$

8 0

2 years ago

What is 10 and 2/3 divided by 8?

postnew [5]

10 and 2/3 = 32/3
32/3 x 8 = 256/3
256/3 = 85.33333333333 repeating

4 0

3 years ago

About 8% of the U.S. population catches the flu each season. Assuming everyone has equal probability of catching the flu, about

avanturin [10]

Answer:

<u>The odds are 2 : 23, or about 0.09 : 1 (0.09 to 1).</u>

Explanation:

The <em>odds </em>of an event is the ratio of occurrence to non-occurrence of the event.

When you know the <em>probability</em> of an event, then you can calculate the odds by dividing the probability of occurence by the probability of non-occurrence.

Calling p the probability that an event will happen, 1 - p is the probability that it will not happen and the odds will be:

Odds = p / ( 1 - p)

You have p = 8% = 0.08, and 1 - p = 1 -0.08 = 0.92.

Therefore:

Odds = 0.08 / 0.92 = 8 : 92 = 2 : 23 ≈ 0.09 : 1 (0.09 to 1)

8 0

2 years ago

A set of three scores consists of the values 3, 7, and 2. Σ2(X – 3) =

siniylev [52]

Answer:

Step-by-step explanation:

$\sum 2(X-3)=2(3-3)+2(7-3)+2(2-3)=0+8-2=6$

5 0

1 year ago