A counselor wishes to examine the benefits of a parenting class on parenting skills. He decided to administer a questionnaire to the 10 parents who have attended the most recent class. How could this study be improved? Select all that apply. A. Increase the sample size B. Administer a questionnaire to parents who have not attended the class C. Give some sample responses, prior to administering the questionnaire. D. Uses a random sample of all patients, who have attended the class.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

0.50 , 0.75

step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.