A slice is made parallel to the base of a right rectangular pyramid, as shown. What is the area of the resulting two-dimensional
cross-section? Enter your answer in the box. cm² Rectangular pyramid intersected horizontally by a rectangle. The front edge of the base of the pyramid is labeled 2 centimeters, and the right edge is labeled 4 centimeters. The height of the pyramid is labeled 8 centimeters. The part of the larger rectangle that intersects the pyramid is a smaller gray rectangle. The front side of the smaller rectangle is labeled 1 centimeter, and the right side is labeled 2 centimeters.
2 answers:
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Answer:
(x) =
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 5x + 4 ( subtract 4 from both sides )
y - 4 = 5x ( divide both sides by 5 )
= x
change x to (x) and y back to x, thus
(x) =
To Find :
Position vector at time and
.
Solution :
r (t) = 2 (t −7)i + 12t j
Putting t = 5 s and t = 8 s, we get :
r(5) = 2( -2 )i + 60j
r(5) = -4i + 60j
r(8) = 2i + 96j
Now, to find speed differentiating the r(t) w.r.t t :
Hence, this is the required solution.