![mmoniquee](/avatars/36128.jpg)
mmoniquee
01.12.2020 •
Mathematics
Felicity drinks ⅔ of an 18 ounce glass of juice in 30 minutes. How much would she drink in 3 hours?
Solved
Show answers
More tips
- F Food and Cooking How to Find Your Zip Code?...
- W Work and Career Can Skill Alone Make You a Professional?...
- C Computers and Internet How to Top Up Your Skype Account Without Losing Money?...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Mathematics
- M Mathematics Sols - 5 Which graph best represents the solution set of 41.5 by - 542...
- M Mathematics Aline on the wall and a line on the floor are skew. always, sometimes, or never?...
- M Mathematics Caroline has a collection of 280 coins. How many coins represent 5% of her collection?...
- E English Why might a commercial use a literary device such as repetition when advertising a product? I. to call attention to the product II. to show the intellectual value of the product...
Ответ:
Ответ:
Option A (-1, -6)
Option C (10, 49)
Step-by-step explanation:
Two equations are given as y = (x - 2)² - 15 (1)
and -5x + y = -1
y = -1 + 5x (2)
We put the value of y from equation 1 in equation 2.
(x -2)² - 15 = 5x - 1
x² + 4 - 4x - 15 = 5x - 1
x²- 4x - 11 = 5x - 1
x² - 4x - 11 - 5x + 1 = 0
x² - 9x - 10 = 0
x² - 10x + x - 10 = 0
x(x - 10) + 1(x - 10) = 0
(x + 1)(x - 10) = 0
x = -1 , 10
Now we put the value of x in equation 2
y = 5(-1) - 1
y = -5 -1 = -6
For x = 10
y = 5×10 - 1 = 50 - 1 = 49
So solutions are (-1, -6) and (10, 49)
First solution is Option A. (-1, -6) and second solution is Option C.(10, 49)