First, start by distributing the 3. The equation becomes:
3x-6+5=3x-2
Then, you can simplify the left side of the equation:
3x-1=3x-2
Next, subtract 3x from both sides in an effort to make the variable be on one side of the equation. Once you do this, you will end up with:
-1=-2
Since this is not true, if means that there are no solutions.
Hope this helps!
2x+7=16
Katherine divided wrong. She shouldn't have divided by 2 because 7 isn't a multiple of 2; x+7≠16:2.
She should have proceed like that:
2x+7=16|-7
2x=16-7
2x=9
x=9:2
x=4,5
1.20(35)
this would be the same as :
(1 + 0.2)* 35 <==
or it also could have been 35 + 0.20(35)
25x3=75 !!!!!!!!!!!!!!!!!!!!
Answer:
The car travelled 73 miles
The boat travelled 53 miles
The car arrived 17.7 minutes before the boat
Step-by-step explanation:
The total distance the car travelled from Point A to Point B = 28+45 = 73 miles
The total distance the boat travelled is given by the displacement; Using Pythagorean theorem = 53miles.
Time taken by the car = Distance/Speed = 73/40 = 1.825 hrs or 109.5 minutes
Time taken by the boat = Distance/speed = 53/25 = 2.12 hrs or 127.2 minutes.
The time taken by the car is the shortest, therefore it arrives first before the boat.
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