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nydimaria [60]
2 years ago
13

What is the square root of -1?

Mathematics
2 answers:
madreJ [45]2 years ago
5 0
The answer its “i” because there are two complex square roots of −1, namely i and −i,
Sholpan [36]2 years ago
3 0

Answer:

i

Step-by-step explanation:

i stands of imaginary because no real numbers are negative

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Solve for c: <br> 12 - 9 + c = 12
enyata [817]

Step-by-step explanation:

12 - 9 + c = 12

-9 + c = 12 - 12

- 9 + c = 0

Therefore c = 9

Hope this helps.!

6 0
2 years ago
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Solve for x: 3x+6&gt;-15 x=?
kati45 [8]

Answer:

x>-7

Step-by-step explanation:

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What is the slope of a line parallel to the line with equation 5x 3y=7?
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down 5, over 3
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Show that cos3(B)+cos(B)sin2(B) = 1 sin(B)cos2(B)+sin3(B) tan(B)
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8 0
3 years ago
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Se vende2 usb en 60 soles cada uno. En una se ganó el 20% y en la otra se perdió el 20% ¿Se ganó o se perdió en total y cuánto?
aniked [119]
Voy a responder en el mismo idioma en que está la pregunta.

1) Venta con ganancia

Precio de venta 60 soles.

Ganancia = 20% del costo => costo + 0,20 * costo =  precio

=> costo (1 + 0,20) = precio = 60 soles

=> costo (1,20) = 60 soles => costo = 60 soles / 1,20 = 50 soles

2) Venta con pérdida del 20%

Pérdida = 20% del costo

=> costo - precio = 20% * costo => costo - 0,20*costo = precio

=> costo ( 1 - 0,20) = 60 soles => costo * 0,80 = 60 soles

=> costo = 60 soles / 0,80 = 75 soles

3) Costo total = 50 soles + 75 soles = 125 soles

4) Ganancia total = valor total de venta - costo total

Ganancia total = 2 * 60 soles + 125 soles = 120 soles - 125 soles = - 5 soles.

El signo negativo significa que al final se perdió 5 soles en la operación.
8 0
3 years ago
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