Aquadrilateral has vertices a(4,5), b(2,4), c(4,3), and d(6,4) which statement about the quadrilateral is true a abcd is a parallelogram with noncongruent adj sides b abcd is a trapezoid with only one pair of parallel sides c abcd is a rectangle with noncongruent adj sides d abcd is a square e abcd is a rhombus with non perpendicular adj sides

Let's find the lengths of all sides:

.

All sides are congruent, then this quadrilateral may occur to be square or rhombus. Check whether sides AB and AD are perpendicular. With this aim you should find vectors and :

,

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The dot product: . This means that sides AB and AD are not perpendicular and quarilateral ABCD is not square.

correct choice is E.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.