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Misha Larkins [42]
3 years ago
8

Austin is 69 years younger than Jamie. 3 years ago, Jamie's age was 4 times Austin's age. How old is Austin now?

Mathematics
1 answer:
matrenka [14]3 years ago
4 0

Answer: 26 years old

Step-by-step explanation:

  1. Create an equation with Austin as x and Jamie as x+69 (I just like workin with addition signs more)= 4(x-3)= x+69-3
  2. Simplify the equations --> 4x-12=x+66
  3. Solve the equation: 3x-12=66 --> 3x=78 --> x=26

This is the same as other age problems, just with the extra step of distributing the multiplication.

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A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the cars average accelerati
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Answer:

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a=(0-70)/(7/3600)  which means it decelerates at -36000 km/h

This number is humongous; I would advise you to re-check the problem and see if the the time it takes is 7 hours rather than 7 seconds. Notice that I put the time as 7/3600 because it is 7 seconds which should be converted to hours.



3 0
3 years ago
A road sign gives drivers information about traffic on busy highways. One sign shows "15 miles in 20 minutes". What is this spee
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Then you need to divide 15 by 1/3 to get the final speed:
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He will need to be traveling at 45 miles per hour,
Hope this helps! :)
8 0
3 years ago
Read 2 more answers
A sphere has a volume of 33.5 cubic inches. which value is closest to the radius of this sphere in inches?
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Source:<span><span> </span> </span> http://www.1728.org/diam.htm


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4 years ago
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