1. A scale model of a building is 12 inches tall. The actual building is 120 feet tall. What is the scale factor of the model.
2 answers:
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Answer:
26
Step-by-step explanation:
To evaluate this expression, all we have to do is substitute the given values of the variables into the expression. That is, replace every in the expression with a
and every
in the expression with a 5.
Doing so, we get:
(Substitute given values into the expression)
(Evaluate exponential term)
(Add)
Hope this helps!
Answer:
Joan drive with a speed of 55 miles per hour.
Step-by-step explanation:
Given:- Travelling time (t) = 4 hours.
Travelled distance (d) = 480 miles.
Speed of Justin is 10 miles per hour faster than Joan.
To find:- Speed of Joan = ?
Solution:-
Let speed of Joan be x,
therefore speed of Justin = x+10 ---------------(from given)
Now, Total speed of Joan and Justin = x+x+10
Total speed of Joan and Justin = 2x+10 ------------(1)
Now formula for speed is,
Speed =
-------------(from 1 and given)
as x is the speed of Joan,
Therefore Joan drive with a speed of 55 miles per hour.