Answer: The independent variables are the times and the dependant variables are tempatures.
Step-by-step explanation: the independent variables are what YOU changed, and you changed what time you checked. The dependent variable is what you didn't change, and you didn't change the temperatures!
The time the two trains are at the same distance from salt lake city is 6:am
<h3>What is rate?</h3>
a rate is a ratio that compares two different quantities which have different units. For example, if we say John types 50 words in a minute, then his rate of typing is 50 words per minute. The word "per" gives a clue that we are dealing with a rate.
Let the distance between salt lake city and the two trains be x and the time they are at the same distance x be t.
distance traveled by first train,
speed = distance/time
40 = x/t
making x subject of the equation and cross multiplying,
x = 40t--------------1
Also train 2 moved 4 hours later by 2pm, so the its time is t - 4
speed = distance /time
50 = x/t - 4
x = 50(t - 4)---------------2
Equating equations 1 and 2, we have
50(t - 4) = 40t
50t - 200 = 40t
50t - 40t = 200
10t = 200
t = 200/10
t = 20 hours
so the time the two trains will be at the same distance should be 20 hours from 10 am which is 6am the following day.
In conclusion the two trains will be at the same distance at 6am the following day.
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Answer:
b 16 adult is - 40 people end of day
Answer:
8 ft; 6 m; 28pi ft; 10pi mm
Step-by-step explanation:
1. Radius = diameter/2
16/2=8
Therefore, 8 ft
2. Diameter= radius * 2
3*2=6
Therefore, 6 m
3. Circumference = 2*pi*r
2*pi*14=28pi
Therefore, 28pi ft
4. Circumference = pi*d
Therefore, 10pi mm
I hope this helped and have a good rest of your day!
Answer:
A
Step-by-step explanation:
first lets find the area of the square
A=l*w
12*12=144 m^2
then lets find the are of the circle
A=pi*r^2
A=3.14*(d/2)^2
the diameter of the circle is 12m
A=3.14*(12/2)^2
A=3.14*(6)^2
A=3.14*36
A=113.04 m^2
Now, lets subtract the area of the circle form the area of the square
144-113.04= 30.96 m^2
So, the answer is A
