Pl in a rush the altitude of an airplane is decreasing at a rate of 42 feet per second. what is the change in altitude of the airplane over a period of 27 seconds? a. -69 feet b. 1,134 feet c. -1,134 feet d. 69 feet

-42 x 27 = -1,134  Hope this helped!

-TTL

1134 feet.

You multiply the rate by the time.

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

correct answer is c. just did it

step-by-step explanation: