Type the correct answer in each box.
consider these quadratic expressions:

a. -3x2 + 11x − 3

b. 11x2 − x + 10

c. 4x2 + 27x − 28

d. -3x2 + 11x + 31

for each polynomial operation, write the letter that corresponds to the resulting expression from the list.

(5x2 + 2x + 1) + (6x2 − 3x + 9) is equivalent to expression
.

(-3x2 + 6x − 12) + (5x + 9) is equivalent to expression
.

(8x + 16) − (3x2 − 3x − 15) is equivalent to expression
.

(5x2 + 23x − 7) − (x2 − 4x + 21) is equivalent to expression
.

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.