Answer:
m=3
Step-by-step explanation:
-4m+7= -5
Combine like terms.Put +7 on other side.
-4m= -5-7
-4m= -12
It's -4 times m = -12 right ?
So the answer is m=3 because m= -12/-4
To answer you do 5 times 4 times 3 to get 60
Taking into account the supplied speeds, Boston is from the destination to:
<h3>
Calculation of the
distance between
Boston and Place of
Destination</h3>
To identify the distance between Boston and the destination of the trains, it must be remembered that the <u>speed</u> mentioned for each one is a reference to the distance traveled per hour, therefore, after each hour, each train will travel :
- Regular train: 60 miles
- Express train: 80 miles
According to the information given, when the express train leaves, the regular train has a 60-mile lead, which is getting shorter hour by hour because the express train travels 20 miles per hour more than the normal train.
Therefore, in <u>three hours</u>, the express train would catch up with the regular train, calculating the distance thanks to the speed formula:
And clearing the distance:
Therefore, the destination would be <u>240 miles</u> from Boston, which would take four hours by regular train and three hours by express train.
If you want to learn more about Mathematics, you can visit the following link: brainly.com/question/24600056
Answer:
155 pages
Step-by-step explanation:
55*2+30+15=155
Hope this helps :)
Answer:The number of seconds after rocket is released
Step-by-step explanation:
Given
The height of a rocket after it is released is modeled by

Here t represent the number of seconds after the rocket is released.
Initial velocity can also be determined by this equation by differentiating the
w.r.t time

at t=o

thus initial velocity will be 32 units/s