Answer:
Part 1 .
As per the given statement: In t hours the train has traveled s miles.
Distance of the train = s mile
Time = t hours
Formula for :
Speed of the train(v) = 
or
mph .....[1]
Substitute the value of t = 3 hours and s = 180 miles in [1], to solve for v;
Therefore, the speed of the train(v) is, 60 mph
Part 2.
Similarly,
The formula for speed of the train (v) is given by;
Substitute the value of t = 2.5 hours and s = 225 miles to solve for v;
Therefore, the speed of the train(v) is, 90 mph
(x+2)^6
=(x^2+4x+4)(x+2)^5
=(x^3+6x^2+12x+8)(x+2)^4
=(x^4+6x^3+24x^2+32x+16)(x+2)^3
=(x^5+8x^4+36x^3+80x^2+80x+32)(x+2)^2
=(x^6+10x^5+52x^4+152x^3+240x^2+192x+64)(x+2)
=x^7+12x^6+72x^5+254x^4+544x^3+472x^2+448x+164
Answer: x^7+12x^6+72x^5+254x^4+544x^3+472x^2+448x+164
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Answer:
The volume of the box is 33.796 cubic inches
Step-by-step explanation:
Given
See attachment for the base of the prism
Required
The volume of the box
From the attachment, we have:
-- side length of the octagon
The area is then calculated as:
So, we have:
Evaluate the square root
The volume is then calculated as:
7.25 as a mixed number
7 is a whole number
0.25 is 25/100
7 25/100
As a lowest term, simplify the 25/100
Divide 25 top and bottom
25/25 = 1
100/25 = 4
7 1/4 is your answer
hope this helps
