ANSWER FAST PL Explain how to use estimation to help find the product of two decimals. Give an example with both estimated and actual answers. (5 points)

what are the decimal points

Multiply to find the product. Multiply the decimals as if they were whole numbers. Ignore the decimal point. ...

Compare your estimate with your product to verify that your answer makes sense

Step-by-step explanation:

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.

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.