Mathematics, 08.07.2019 22:30, Bladedrose2351
The sum of sally and beth's age is 60. six years ago, sally was 3 times as old as beth. what are their present ages? a. beth’s age is 15 years, and sally’s age is 45 years. b. beth’s age is 18 years, and sally’s age is 42 years. c. beth’s age is 42 years, and sally’s age is 18 years. d. beth’s age is 45 years, and sally’s age is 15 years.
Answers: 2
Mathematics, 21.06.2019 21:40, angellynn581
The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.
Answers: 1
Mathematics, 21.06.2019 22:30, monkemily1
There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?
Answers: 2
Mathematics, 22.06.2019 04:10, kernlife
You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in:
Answers: 2
Mathematics, 22.06.2019 05:00, izzycheer7
If a triangle given by the matrix [2 3 5 -1 0 2] is dilated by a scale factor of 2, what will happen to the side lengths and angle measures of the triangle
Answers: 2
The sum of sally and beth's age is 60. six years ago, sally was 3 times as old as beth. what are the...
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