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belka [17]
3 years ago
15

Tom and Jerry enter a race. Tom runs an average of 10 kilometers per hour, and Jerry runs an average of 9 kilometers per hour. I

f Tom finishes one half hour before Jerry, how far do Tom and Jerry run? 20 km 90 km 45 km 22.5 km
Mathematics
2 answers:
Nata [24]3 years ago
5 0

SOS

Answer: 45

Motion problems: d = rt

distance = rate * time; rate = speed

Tom: 10kph

Jerry: 9kph

45 km

Zielflug [23.3K]3 years ago
4 0
I am almost positive that the answer is 45 km
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5 0
3 years ago
We are interested in the dimensions of a certain rectangle. this rectangle has length twice the side of the square and width thr
Mila [183]
Area of square = s^2
Area of Rectangle = lw
l = 2s

w+3 = s
solve for w, w=s-3
Now we have l and w.
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Since both areas are equal set both equations equal to each other:
(2s)(s-3)=s^2
Now simplify
2s^2-6s=s^2
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Now plug in s for the length formula for the rectangle:
l = 2s so... l = 2(6) so length of rectangle = 12.
Now plug in s for the width formula for the rectangle:
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Now the dimensions of the rectangle are 12 by 3. 12 being length and 3 width.
To CHECK:
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The areas are equal that verifies the answer of 12 by 3.
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