![stodd9503](/avatars/16224.jpg)
stodd9503
13.12.2021 •
Mathematics
One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from 11.4% in 1997) to 9.8% now. Suppose a survey in a large high school reveals that, in a random sample of 1046 students, report using illegal drugs. Use a 0.05 significance level to test the principal's claim that illegal drug use in her school is below the current national average.
Solved
Show answers
More tips
- C Computers and Internet iPhone SMS Delivery Report: How to Set It Up...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- H Health and Medicine Is it true that working with a computer is harmful to your eyesight?...
- H Health and Medicine Boosting Immunity: A Complete Guide on How to Improve Your Body’s Natural Defenses...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- C Computers and Internet How to Teach Older Generations to Work with Computers?...
- G Goods and services How to Choose a Coffee Maker? The Ultimate Guide for Coffee Lovers...
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
Answers on questions: Mathematics
- M Mathematics PLZZZ HELP GIVING BRAINLIST Match each expression to its value. 1. 7 - 5 -2 2. -7 + 5 2 3. -7 - 5 12 4. 7 - (-5) -12...
- M Mathematics Put the following equation of a line into slope-intercept form, simplifying all fractions. 12x + 9y = -45...
- M Mathematics Use the Remainder Theorem to determine whether or not x + 3 is a divisor of p (x) = 2x^3 + 4x^2 - 2x + 12 PLEASE SHOW WORK....
- M Mathematics A quadratic function y=f(x)y=f(x) is plotted on a graph and the vertex of the resulting parabola is (6, -4)(6,−4). What is the vertex of the function defined as...
- M Mathematics Find the real or imaginary solutions. x^4 + 3x^2 - 18 = 0 PLEASE SHOW WORK....
- M Mathematics What is the range function graphed below?...
- M Mathematics Multiply the fractions together. B Divide 45 5 4 by 13 3 1 . C Multiply the numerators together, and multiply the denominators together. D Divide 13 3 1 by 45 5...
- M Mathematics Our country is about to be in a depression the likes of which our country has never seen. Joe Biden is the president of the United States....
- M Mathematics Please help asap is x= -3 what is the value of |x-4|-x^2 thank you...
- M Mathematics Find the measuremeant of the angle indicated??...
Ответ:
x = 2, y = 1
Step-by-step explanation:
x + 3y = 5
3y = -x + 5
y = -1/3x + 5/3
-x + 6y = 4
-x + 6(-1/3x + 5/3) = 4
-x - 2x + 10 = 4
-3x = -6
x = 2
x + 3y = 5
2 + 3y = 5
3y = 3
y = 1