Asurvey of a random sample of students found that 14 preferred
country music, 16 preferred rock, 5 preferred classical, and 10
preferred pop. there are 630 students in the school. predict how many
more students in the school prefer country or rock music than prefer
classical music. 7.sp.2

  350

Step-by-step explanation:

Given : A survey of a random sample of students found that 14 preferred

country music, 16 preferred rock, 5 preferred classical, and 10

preferred pop.

Sample size :

Number of students prefer country or rock music= 14+16=30

Now, the proportion of  students prefer country or rock music =

Total students in the school= 630

Predicted number of students in the school prefer country or rock music=

The proportion of  students prefer classical music =

Predicted number of students in the school prefer classical music=

Now, the predicted number of students in the school prefer more country or rock music than prefer  classical music = 420-70=350

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.