1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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)

You might be interested in
Instructions:Select the correct answer from the drop-down menu. Dave is helping his grandmother make trail mix. His grandmother
Mazyrski [523]
Set up a proportional relationship:

xf/1n=(f/5)/(n/3)

xf/1n=3f/(5n)  multiply both sides by 1n

xf=3f/5 so

x=3/5

Dave must mix in 3/5 of a cup of fruit with a single cup of nuts.

You could of also just noted that you need to multiply 1/5 times 3 because 1/5 mixes with just 1/3 of a cup of nuts...

8 0
3 years ago
Is it true that a line with slope 1 always passes through the origin? Explain your reasoning.
elena55 [62]

Well, yes and no.

Yes, because the straight line needs to pass through a number greater than 0, and 1 is obviously greater than 0.

However, y = x + 1 is not the same as y = x.

hope this helps.! let me know if it's in any way confusing..

I'd be happy to help!

5 0
3 years ago
To make a dozen sugar cookies, you use .75 lb of cookie dough. To make a dozen frosted cookies, you
Fed [463]
The Answer is C because you just have to
6 0
3 years ago
If you are buying at item at a store for a price of $72, and there is a 6.2% tax added on top, what would be the total amount du
FrozenT [24]

Answer:

Sale Tax($): 4.5

Step-by-step explanation:

Before Tax Price ($):  72

Tax Rate (%): 6.2

Final Price Including Tax ($):  76.46

Sale Tax($): 4.46

5 0
3 years ago
Read 2 more answers
L1 : (1, 14) and (1, 2) L2: (5, -2) and (4, 9) A. Parallel B. Neither C. Perpendicular
Masja [62]

answere is (c)perpendicular

8 0
3 years ago
Other questions:
  • Have no clue how to find the slope or y off pic
    14·1 answer
  • What is 6 divided by 5/9
    6·1 answer
  • Which is bigger 0.6 or 3/4 and why
    14·2 answers
  • The length of a rectangle envelope is 2 1/2 times its width. A plastic band surrounds the front and back of the envelope to secu
    9·1 answer
  • 1000÷0.833......................................​
    13·1 answer
  • Angle sec0= -13/12 and cot<0. what are the exact values of tan0 and sin0.
    13·2 answers
  • Pleaseeee helpppppp !!!!!!! Will mark Brianliest !!!!!!!!!!!!!!
    8·1 answer
  • Sam built a fence that was 54 feet 54 feet54, start text, space, f, e, e, t, end text long. She built the same length of fence e
    13·1 answer
  • Direction: Fill in the boxes with "Yes" or "No". KITE SQUARE RHOMBUS RECTANGLE P Property Opposite sides are equal. Opposite cid
    10·1 answer
  • What is Limit as x approaches negative 19 plusk(x)? 37.5 38 43.5 44
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!