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
Lunna [17]
3 years ago
9

. Which ordered pairs in the form (x, y) are solutions to the equation 7x – 5y = 28?

Mathematics
2 answers:
Brut [27]3 years ago
8 0

we know that

If a ordered pair (x,y) is a solution of the equation, then the ordered pair must satisfy the equation

we have the equation

7x-5y=28

Let's verify all the cases to determine the solution to the problem.

<u>case A)</u> point (-6,-14)

Substitute the values of x and y in the equation

x=-6\\y=-14

7(-6)-5(-14)=28

-42+70=28

28=28 -------> is  true

therefore

The point  (-6,-14) is a solution of the equation

<u>case B)</u> point (-1,-7)

Substitute the values of x and y in the equation

x=-1\\y=-7

7(-1)-5(-7)=28

-7+35=28

28=28 -------> is  true

therefore

The point  (-1,-7) is  a solution of the equation

<u>case C)</u> point (4,10)

Substitute the values of x and y in the equation

x=4\\y=10

7(4)-5(10)=28

28-50=28

-22=28 -------> is not true

therefore

The point (4,10) is not a solution of the equation

<u>case D)</u> point (7,9)

Substitute the values of x and y in the equation

x=7\\y=9

7(7)-5(9)=28

49-45=28

4=28 -------> is not true

therefore

The point  (7,9) is not a solution of the equation

therefore

<u>the answer is </u>

(-6,-14)

(-1,-7)

svet-max [94.6K]3 years ago
6 0

Answer:

It is  the answer is  (-6, -14) and also (-1,-7) so it is A and B

Step-by-step explanation:

I did the test.

You might be interested in
Hugo is buying DVDs that cost $15 each. He has a coupon for $5 off his
QveST [7]

Answer: 85

Step-by-step explanation: 15 × 6= 90 - 5=  85

7 0
3 years ago
Explain how patterns are used in mathematics
jeka94

Answer:

shapes

Step-by-step explanation:

The patterns are shapes

8 0
3 years ago
Find Distance (4,6) (-4,-3)​
vampirchik [111]

Answer:

\sqrt{145}

Step-by-step explanation:

The distance formula states that the distance between two points (a,b) and (c,d) is \sqrt{(a-c)^2+(b-d)^2}.

The two points we have are (4,6) and (-4,-3). Plugging these numbers into the distance formula, we have

\sqrt{(4-(-4))^2+(6-(-3))^2.

Simplifying with order of operations, first using the distributive property, gives

\sqrt{(4+4)^2+(6+3)^2.

Squaring and adding gives

\sqrt{(4+4)^2+(6+3)^2}=\sqrt{8^2+9^2}\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~=\sqrt{64+81}\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~=\boxed{\sqrt{145}},

which is the answer in simplest form. This also rounds to about 12.04.

7 0
2 years ago
What are the values for the coefficients and constant term of 0 = 2 + 3x2 - 5x?
pav-90 [236]

Answer:

Step-by-step explanation:

a=3

b=-5

c=2

7 0
3 years ago
Select the correct answer.
laila [671]
B but I don’t know 100%
3 0
2 years ago
Read 2 more answers
Other questions:
  • Round log 58 to the nearest thousandth
    9·1 answer
  • * don’t mind the marks* please help asap ( 10 points)
    5·2 answers
  • A new amusement-park ride that lasts 1 minute can have up to 1200 riders per hour. How many riders can ride per minute?
    10·1 answer
  • The original price of the oreo cookies was $3.00, but Tisha had a coupon for $0.75 off. What was the percent of the discount Tis
    10·2 answers
  • Question 2
    13·1 answer
  • Y = −<br> 1<br> 3<br> x + 2<br> y = x + 2<br> What is the solution to the system of equations?
    15·1 answer
  • Can someone help me with this problem!
    11·1 answer
  • Simplify: (2x^2y^3)3 x (4xy)2
    13·1 answer
  • 3 Choose Yes or No to tell whether the denominator of<br> each product is
    8·1 answer
  • Your gross pay is $1,878.96, net income is $1,196.34, and fixed expenses are $1,338.54. What is your discretionary income?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!