A manager at a casual dining restaurant noted that 18​% of customers ordered soda with their meal. In an effort to increase soda​ sales, the restaurant begins offering free refills with every soda order for a​ two-week trial period. During this trial​ period, 21​% of customers ordered soda with their meal. To test if the promotion was successful in increasing soda​ orders, he manager wrote the following​ hypotheses: H0​: p=0.18 and Ha​: p=0.21​, where p represents the proportion of customers who ordered soda with their meal during promotion. Are these hypotheses written​ correctly? Correct any mistakes as needed.

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation:

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: