neon1393
24.08.2019 •
Mathematics
Me jog my memory in how to solve a system of equations with the example below
2x + y=4
x - y=-1
Solved
Show answers
More tips
- G Goods and services How to Choose a Bread Maker?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics Carly and Asia recently ran against each other for class president. The ratio of votes for Carly to votes for Asia was 4:1. There were 150 votes cast in the election....
- H History What did the passage of the 18th amendment and the volstead act bring about? the prohibition of alcohol restrictive immigration laws a ban on teaching evolution women...
- M Mathematics I need some help with this problem of the assignment?...
Ответ:
(1, 2 )
Step-by-step explanation:
Giving the 2 equations
2x + y = 4 → (1)
x - y = - 1 → (2)
Adding the 2 equations term by term, eliminates the term in y
3x = 3 ( divide both sides by 3 )
x = 1
Substitute x = 1 into either of the 2 equations for corresponding value of y
Substituting x = 1 into (1)
(2 × 1) + y = 4
2 + y = 4 ( subtract 2 from both sides )
y = 2
Solution is (1, 2 )
Ответ:
Answer is in the steps
Step-by-step explanation:
The perfect square that is less than 15 is 9 and greater 15 is 16 and the square root of 15 falls between 3 and 4 because 3 times 3 is 9 and 4 times 4 is 16.
First row: 9 < 15 < 16
Second row
Third row ; 3 < < 4