1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
STALIN [3.7K]
4 years ago
10

How do you solve the system of linear equations by graphing X+y=7 -x+y=-7

Mathematics
1 answer:
morpeh [17]4 years ago
8 0

Answer:

x = 7 and y = 0

Step-by-step explanation:

We can either solve by substitution method or by elimination method or both method . We will solve by both the elimination and substitution method.

X+y=7  ---------------------------------------------------(1)

-x+y=-7  -------------------------------------------------(2)

Subtract equation (2) from equation(1)

2x = 14

Divide both-side of the equation by 2

2x/2 = 14/2

x = 7

Substitute x = 7 into equation (1)

x+y=7  

7 + y = 7

Subtract 7 from both-side of the equation

7-7 + y = 7-7

y = 0

x = 7 and y =0

You might be interested in
2.33(3.56) what is the division problem
RSB [31]

Answer:

Step-by-step explanation:Perhaps somebody's asked this already, but I can't see it. Suppose I have a square that is 7 feet by 7 feet. I want to calculate the area. I multiply 7 feet by 7 feet and get 49 square feet, but since the lowest number of sig figs in one of my operands is one, my answer can only have one sig fig. This forces my answer to be 50 square feet, and I have now lost precision. Can somebody explain this?

6 0
3 years ago
What is the corresponding index of the random matrix of 7 criteria for checking consistency of random judgment?
Ymorist [56]

A. 0.58  is the corresponding index of the random matrix of 7 criteria for checking the consistency of random judgment.

In probability theory and mathematical physics, a random matrix is ​​a matrix-valued random variable. H. A matrix whose elements are some or all random variables. Many important properties of physical systems can be represented mathematically as matrix problems.

In probability theory and mathematical physics, a random matrix is ​​a matrix-valued random variable. That is, a matrix whose elements are some or all random variables. Many important properties of physical systems can be represented mathematically as matrix problems.

Learn more about matrix  here: brainly.com/question/2456804

#SPJ4

7 0
2 years ago
Find F(5) for f(x)= 1/4(2)^x
Serga [27]

If we have a function f(x), f(5) is f(x) but replacing x with 5. The result give us a value of y and a point of the function, (x, y).

f(5) =  \frac{1}{4}  ({2})^{5}  =  \frac{32}{4}  = 8

ANSWER A

7 0
2 years ago
Read 2 more answers
HELP ME! I'LL GIVE THE BRAINLIEST
nasty-shy [4]

Answer:

0.0824 (may be incorrect)

6 0
3 years ago
Please help I really need help on this
diamong [38]

Answer:

Step-by-step explanation:

The probability of an event to occur is given by a fraction:

P = \frac{number of favourable cases}{total number of possible cases}

Your favourable cases are given by the number of red face cards, that is the Jacks, the Queens and the Kings of Diamonds and Hearts, this number is 6.

The total number of cases is given by the total number of the cards, that is 52.

So the probability of drawing a red face card is:

P = \frac{6}{52}

That is ≃ 0,115... = 11,5%

8 0
4 years ago
Other questions:
  • What is the length of FG¯? 
    12·1 answer
  • Pamela has4/5 pound of sunflower seeds if she gives 2/3 pound of sunflower seeds to the squirrels in her backyard what fraction
    13·1 answer
  • What is the next term of the geometric sequence? 72,36,18
    13·1 answer
  • Is -7-5+3=1 true or false
    5·1 answer
  • John has a roll containing 24 2/3 feet of wrapping paper. he wants to divided it into 11 pieces, first though he must cut off 5/
    6·2 answers
  • the Drama club is running a lemonade stand to raise money for it's new production. A local grocery store donated cans of lemonad
    10·1 answer
  • Please help! I dont understand! Thank you
    15·1 answer
  • Please I’m not a hurry what’s 59.85 divided into three equal groups???
    14·2 answers
  • Mr. Dylan used 5/12 of a carton of eggs to make breakfast Sunday.
    9·1 answer
  • Penny attended a four year state college. she took out a student loan to pay for her tuition and room & board for the four y
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!