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Sophie [7]
3 years ago
13

What is the sum of sqrt -2 and sqrt -18

Mathematics
1 answer:
Assoli18 [71]3 years ago
3 0

Answer:

4i sqrt(2)

Step-by-step explanation:

sqrt(-2) + sqrt(-18)

We know sqrt(ab)= sqrt(a) sqrt(b)

sqrt(-1)sqrt(2) + sqrt(9) sqrt(-2)

sqrt(-1)sqrt(2) + sqrt(9) sqrt(2)sqrt(1)

We know the sqrt(-1) is equal to i

i sqrt(2) +3 sqrt(2) i

i sqrt(2) +3i sqrt(2)

4i sqrt(2)

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erastova [34]

Answer:

What?

Step-by-step explanation:

said that agian in egnilsh lol

4 0
3 years ago
A prince picked a basketful of golden apples in the enchanted orchard. On his way home, he was stopped by a troll who guarded. T
Lelu [443]

Answer:

Let x = total number of apples picked by the prince

x=44

Step-by-step explanation:

1st troll payment

x-(0.5x+2)

x-0.5x-2

0.5x-2 (that is the amount of apples left after 1st troll payment)

2nd troll payment

(0.5x-2)-(0.5(0.5x-2)+2)

Simplifying,

(0.5x-2)-(0.25x-1+2)

(0.5x-2)-(0.25x+1)

0.5x-2-0.25x-1

0.25x-3 (apples remaining after 2nd troll payment)

3rd troll payment

(0.25x-3)-(0.5(0.25x-3)+2)=2

(0.25x-3)-(0.125x-1.5+2)=2

(0.25x-3)-(0.125x+0.5)=2

0.25x-3- 0.125x-0.5=2

0.125x-3.5=2

0.125x =2+3.5

0.125x=5.5

x=5.5/0.125 (divide both sides by 0.125)

=44 apples

Therefore total number of apples picked by the prince, x=44

3 0
3 years ago
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The perimeter and the area
Genrish500 [490]
Perimeter=28/3
Area=40/3
3 0
3 years ago
Solve for the right answers
maria [59]

Answer:

D

Step-by-step explanation:

There is a 100% chance that if she picks 3 disk, they are all DVD's since they are all DVD's.

6 0
2 years ago
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When you solve a problem involving money, what can a negative answer represent?
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When solving anproblem including money a negative answer can represent debt (how much you owe)
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3 years ago
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