Answer:
x = (28 +- root -64) / (8)
Step-by-step explanation:
4x^2 -28x= -53 = 0
x = [-(-28)+- root (-28)^2 - 4 * 4 * 53] / 2 *4
x = (28 +- root 784 - 848) / (8)
x = (28 +- root -64) / (8)
Answer:
the answer is right so idk
Step-by-step explanation:
Answer:
10 minutos
Step-by-step explanation:
La operación a efectuar es:
1km / (6km/h)
= 1/6 hora
expresándolo en minutos es:
1 hora = 60 minutos
1/6 hora = 60*1/6 = 10 minutos
Tardaremos:
10 minutos
en llegar al destino
Answer:
6sin^2(x) = 7 - 5cos(x)
6(1 - cos^2(x)) = 7 - 5cos(x)
6 - 6cos^2(x) = 7 - 5cos(x)
6cos^2(x) + 5cos(x) -1 = 0
(6cos(x) - 1)(cos(x) + 1) = 0
cos(x) = 1/6
x = arccos(1/6)
x = 1.40334825 + 2k*pi, 4.87983706 + 2k*pi
cos(x) = -1
x = pi + 2k*pi
Answer:
15.6666666667
Step-by-step explanation:
