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3 years ago

Square root of 78 rational or irrational

Mathematics

2 answers:

lozanna [386]3 years ago

4 0

The square root of 78 is Irrational

finlep [7]3 years ago

4 0

Answer:

irrational

Step-by-step explanation:

The square root of 78 would = 8.8

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-64=(2cos(pi/2)+2i sin(pi/2))^n..... n=??

zvonat [6]

Answer:

The real solution is $n=6$ .

Step-by-step explanation:

$\cos(\frac{\pi}{2})=0$ while $\sin(\frac{\pi}{2})=1$

So the equation becomes:

$-64=(2(0)+2i(1))^n$

$-64=(0+2i)^n$

$-64=(2i)^n$

We know that $2^6=64$ . So let's see what $n=6$ gives us:

$(2i)^6=64i^6=64i^4i^2=64(1)(-1)=-64$ .

$-64$ is the result we wanted.

$n=6$ is therefore a solution.

4 0

3 years ago

GIVING BRAINIEST for the correct answer

makkiz [27]

Last one is 6.3 pounds and the other one is 8.5 dollars

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3 years ago

Find the area of the shape shown below.<br> 12 by 5 by 5

hodyreva [135]

Answer:

300 squared unit of measurement

Step-by-step explanation:

12*5*5

12*5 = 60

60*5 = 300

I am assuming this is a rectangular prism

7 0

4 years ago

PLEASE HELP <br>ONLY ANSWER IF YOU KNOW <br>I WILL REPORT IF IT HAS NOTHING TO DO WITH THE TOPIC

Slav-nsk [51]

Answer:

One would be -3 and the other would be 0.

Step-by-step explanation:

first would be 0 because it's already an answer

second, we take -3 from the left side and subtract it from 0 from the other side which is -3

6 0

3 years ago

Read 2 more answers

Negativo

liubo4ka [24]

Answer:

noooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

Step-by-step explanation:

5 0

3 years ago