Answer: 7/8= 35/40
3/10= 12/40
Step-by-step explanation: You can find the least common denominator by looking at a multiplication table or by multiplying the prime factors of the original denominators:
8 = 2×2×2. 10=2×5
"Cancel" the duplicate from one set or the other. So here one of the 2's is eliminated:
2×2×2×5=40
Then set up a proportion:
7/8 = x/40 Multiply the new denominator by the original numerator, then divide by the original denominator:
40×7=280. 280÷8=35
40×3=120. 120÷10=12
I hope this helps you with this question and all the others like it!
Answer:
-9n
Step-by-step explanation:
Answer:
The train ride is 3.5 hours
Step-by-step explanation:
We know that distance is equal to rate times time
d = rt
We know the distance and the rate
420 = 120*t
Divide each side by 120
420/120 = 120t/120
3.5 =t
The train ride is 3.5 hours
80 kilometers is equal to 80,000 meters. This is greater than 1000 meters.
Answer:
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Step-by-step explanation:
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