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DanielleElmas [232]
3 years ago
13

Need help with this khan academy question. Plus minus square root of negative nine equals plus or minus

Mathematics
1 answer:
klemol [59]3 years ago
3 0

Answer:

3i

Step-by-step explanation:

3i x 3i = -9

-3i x -3i = -9

Therefore the square root of -9 is 3i or -3i

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Please help! Greatly appreciated sorry for really bad quality
Degger [83]
The first answer.

Point P is at (50,-40) the distance from Q to P is 80 units which you can find by subtracting the x of Q (-30) from the x of P (50).
50-(-30)=80
It then tells you point R is vertically above point Q so you know your x value for R will be the same as Q.
Add your distance from Q to P of 80 units to the y value of Q because you are traveling up.
-40+80=40
R will have a point of (-30,40) and a distance of 80 units
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3 years ago
Ana drew a map of the Panama Canal in the scale Ana used for the map 4 centimeters represents 20 kilometers what is the scale fa
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D

Step-by-step explanation:

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∠ABD and ∠BDE are supplementary. Find the measures of both angles.
Gnom [1K]

Supplementary means that the angles have to add up to 180, so you have your equation.

180=5x+17x-18

198=22x

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Then to find the measures of the angles, you plug x back in.

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3 years ago
Quadrilateral PQRS was translated 5 units to the right and 3 units up to create quadrilateral P′Q′R′S′. Which rule describes thi
Artemon [7]

Answer:

G.(x, y) → (x+5, y+3)

Step-by-step explanation:

The rule would be (x+5, y+3) and the only one with that rule is G.

4 0
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Help please me with this please ❤️❤️❤️❤️
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