Determina o valor de k para cada uma equações do 2º grau seguintes, tal que: a) x²+x+k = 0 não tenha soluções.
b) x²+kx+1 = 0 não tenha uma solução.
c) kx²+2x-4 = 0 tenha duas soluções.
d) -3x²+kx-3 = 0 tenha uma solução

no hablo espanol

Step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

the correct answer would be:

220 centimeters

to get this you can use the pythagorean theorem

hope this

step-by-step explanation: