B. slope is -1/2
This is because the m-value aka the slope is always the reciprocal if the line is perpendicular
The answer is 11..and there's a pic for u too...my pleasure helping you
Answer:
x = 9
Step-by-step explanation:
The sum of the 4 angles in a quadrilateral = 360°
Sum the given angles and equate to 360
90 + 109 + 9x - 5 + 85 = 360, that is
9x + 279 = 360 ( subtract 279 from both sides )
9x = 81 ( divide both sides by 9 )
x = 9
This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.
21^2 + 18^2 = c^2
441 + 324 = c^2
765 = c^2
27.66 km
SOLUTIONS
Solve a given equations or algebraic symbols?

(A)

(B)

(C)

(D)