Answer:
He's not right
Step-by-step explanation:
L = 4/6 = 2/3
K = 2/3
Answer:
meters per seconds squared
Step-by-step explanation:
seconds squared cancel out and you're leftvwith just meters when
meters/seconds squared is multiplied with the seconds squared in t^2
g means gravity and
gravity is 9.8 meters per second squared
nasa
Answer:
45 minutes
Step-by-step explanation:
At 30 mph for 1/4 hour, Peter has a 7.5 mile head start. After he leaves, Mitchell closes that gap at the rate of 40-30 = 10 miles per hour. It will take him ...
t = d/s
t = (7.5 mi)/(10 mi/h) = 0.75 h
to catch Peter.
Mitchell will catch Peter in 45 minutes.
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<em>Alternate Solution</em>
Another way to look at it is that Mitchell's 10 mph advantage is 1/3 of Peter's speed, so it will take 1/(1/3) = 3 times the period of Peter's head start:
3 × 15 minutes = 45 minutes . . . for Mitchell to catch Peter
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You can write equations involving time and distance and see where the distances traveled become the same. You need to be careful choosing the time reference, since you're concerned with Mitchell's travel time. I personally prefer to work "head start" problems by considering the differences in time and speed, as above. This is where you end up using the equations approach, anyway.
To convert ANY percent to a decimal we need to divide the percent by 100. Lets do it:-
60%
60 ÷ 100 = 0.60
60% written as a decimal is 0.60.
CHECK OUR WORK:-
0.60 × 100 = 60
We are RIGHT!!!
So, 60% written as a decimal is 0.60 (0.6).
Hope I helped ya!! xD
Use the formula SA=a+1/2ps
a=area of the base
p= perimeter of the base
s= slant height
