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Part 1: Order of Operations (Simplify the following the expressions)

7 - 24 / 8 x 4 + 6

(3 x 52 / 15) - (5-22)

(22 / 2 - 2 x 5)2 + (4 - 6 / 6)2

(17 - 6 / 2) + 4 x 3

6 x 4 / 12 + 72 / 8 - 9

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

207/8 is the right

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6