Solve the equation. if necessary, round your answer to the nearest tenth. x2 = 98

9.8

Step-by-step explanation:

x^2 = 98

x =

x =

x = *

x = 7 *

x = 7 * 1.414

x = 9.8

Since 98 is not a perfect square then it will end up as a decimal.

Hope this helps >.<

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.

don't give

take it once

try and try and you will not

happy to

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