Solve this equation y= 2x x= -y + 6
1 answer:
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Answer:
Wanda and Dave will catch each other in 54 seconds after Dave starts walking.
Step-by-step explanation:
Let Wanda and Dave catch each other when x be the time after Dave starts walking and y be the distance covered by them
It is given that Wanda started walking along a path 27 seconds before Dave and the constant speed of Wanda is 3 feet per second.
.... (1)
The constant speed of Dave is 4.5 feet per second.
.... (2)
Equate equation (1) and (2).
Divide both sides by 1.5.
Therefore, Wanda and Dave will catch each other in 54 seconds after Dave starts walking.
Answer:
Probability is 0.3506
Step-by-step explanation:
We are given
mean is 8mm
so,
standard deviation is 2.2 mm
so,
x-varies from 7mm to 9mm
At x=7:
we can use formula
we can plug values
At x=9:
we can use formula
we can plug values
So, z is between -0.45455 and 0.45455
now, we can use normal distribution table
and we get
Probability is 0.3506