The first pic is d : and the solution is undefined because both lines don't intersect
the second both equation represent the same line
Answer:
Reflection
Step-by-step explanation:
(x, y) --> (x, -y) is a reflection over the x-axis
Answer:
255 steps
Step-by-step explanation:
They give us the length of the bridge and the length of each step of Robert, therefore we must divide these values to find the number of steps necessary, but first we must pass the distance of the bridge to centimeters:
140m * 100cm / 1m = 14000
Therefore the bridge would have a length of 14000 centimeters, we divide:
14000/55 = 254.54
Which means that Robert take at least 255 steps to fully walk the bridge.
A= 0.25 or 1/4
Hope this helps:)
Answer:
a) 0.48
b) 0.08
c) 0.44
Step-by-step explanation:
The probabilty that husband and wife will be a live 30 years from now is 0.6 and 8.0.
If probability that husband will be alive 30 years from now is 0.6, then the probability that husband will not be alive 30 years from now is
1 - 0.6 = 0.4
If probability that wife will be alive 30 years from now is 0.8, then the probability that wife will not be alive 30 years from now is
1-0.8 = 0.2
a) probability that both will be a live will be
0.6 × 0.8 = 0.48
b) probability that nether will be alive
is
0.4 × 0.2=0.08
c) probability that at least one will be alive will be
Probability that husband would be alive and wife would die + probability that husband would die and wife would be alive
= 0.6×0.2 + 0.4 ×0.8
= 0.12+ 0.32 = 0.44
