You made a mistake 10 times 2 equals 20 tens
Your awnser is going to be in a fraction form. Im on my laptop so there is no symbol for square root but your answer is going to be
The square root of 6+ the square root of 2 (Thats the top half of the fraction) over 4 (bottom half of the fraction)
Step-by-step explanation:
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82 = (n + 10) + n + [2(n + 10)]
Solve that ad you will have your numbers. Don't forget to simplify the terms first before you start solving.
Answer:
Joe's wife must drive at a rate of 45km/hour.
Step-by-step explanation:
We are given that Joe leaves home and bikes at a speed of 30km/hour. Joe's wife leaves home five minutes later by car, and we want to determine her speed in order for her to catch up to Joe in 10 minutes.
Since Joe bikes at a speed of 30km/hour, he bikes at the equivalent rate of 0.5km/min.
Then after five minutes, when his wife leaves, Joe is 5(0.5) or 2.5 km from the house. He will still be traveling at a rate of 0.5km/min, so his distance from the house can be given by:
Where <em>t</em> represents the time in minutes after his wife left the house.
And since we want to catch up in 10 minutes, Joe's distance from the house 10 minutes after his wife left will be:
Let <em>s</em> represent the wife's speed in km/min. So, her speed times 10 minutes must total 7.5 km:
Solve for <em>s: </em>
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Thus, Joe's wife must drive at a rate of 0.75km/min, or 45km/hour.