Below is a two-column proof incorrectly proving that the three angles of ΔPQR sum to 180°: Statements Reasons Draw line ZY parallel to segment PQ Construction m∠ZRP + m∠PRQ + m∠QRY = m∠ZRY Angle Addition Postulate ∠ZRP ≅∠RPQ Alternate Interior Angles Theorem ∠QRY ≅∠PQR Alternate Interior Angles Theorem m∠RPQ + m∠PRQ + m∠PQR = m∠ZRY Substitution m∠ZRY = 180° Definition of a Straight Angle m∠RPQ + m∠PRQ + m∠PQR = 180° Additive Property of Equality Which statement will accurately correct the two-column proof?
(5 points)
Select one:
a. The measure of angle ZRY equals 180° by definition of supplementary angles.
b. Angles QRY and PQR should be proven congruent before the construction of line ZY.
c. The three angles of ΔPQR equal 180° according to Substitution.
d. Line ZY should be drawn parallel to segment QR.

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

23

step-by-step explanation:

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

$6.42

step-by-step explanation: