Match the vocabulary to the proper definition. 1. a number that divides evenly into a given number

2. expressions, equations, and operations involving variables

3. the bottom part of a fraction, represents the whole

4.
a fraction with a numerator that is larger than or equal to the denominator

5. the number in an algebraic term improper fraction

ANSWERS:
1. Factor
2. Algebraic
3. Denominator
4. Improper Fraction
5. Coefficient

Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

What two criteria are needed for triangles to be similar