Let a be the sum of the last four digits and let b be the last digit of your 8-digit student id. (example: for 20245347, a = 19
1 answer:
Using the student id given above, a = 19 and b = 7
Average speed for the first 54 km = 48+a km/h
Plug a = 19
Average speed for the first 54 km = 48+19 = 67 km/h
Average speed for remaining 86 km = 43-b km/h where b = 7
Average speed = 36 km/h
Average speed of entire journey = total distance / total time taken
Time taken to cover 54 km = hr
Time take to cover 86 km = hr
Total time taken = 3.2 hours.
Total distance = 86+54= 140 km
Average speed of the entire trip = = 43.75 km/ h
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Answer:
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Step-by-step explanation:
This problem can be solved by a system of equations.
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I am going to call x the number of quarts of Creamy Vanilla and y the number of quarts of Continental Mocha.
The problem states that each quart of Creamy Vanilla uses 2 eggs and each quart of Continental Mocha uses 1 egg. There are 350 eggs in stock, so:
Each quart of Creamy Vanilla uses 3 cups of cream, as does each quart of Continental Mocha. There are 600 cups of cream in stock.
So:
Simplifying by 3.
We have the following system
I am going to multiply 2) by (-1) and then add with 1), so i can eliminate y
You should make 150 quarts of Creamy Vanilla and 50 quarts of Continental Mocha.
Answer:
Step-by-step explanation:
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And now we can apply proportions in order to find the value of x using the two sides DE and BA, since we have the ratio between the triangle DEC and ABC we have this:
And solving for x we got:
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