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
ladessa [460]
2 years ago
6

Solve the system of equations using substitution y=7 y=2x-5

Mathematics
1 answer:
anzhelika [568]2 years ago
5 0

y= 7 (a)

y= 2x-5 (b)

Replace (a) on (b) ans solve for x:

7 = 2x-5

Add 5 to both sides of the equation:

7+5 = 2x -5 +5

12 = 2x

Divide both sides by 2

12/2 = 2x/2

6 = x

Solution:

x=6, y=7

You might be interested in
HELP PLEASE <br><br><br> Simplify.
maksim [4K]
Simplifying
2x + -3(3 * 0.6x + 2.7)

Multiply 3 * 0.6
2x + -3(1.8x + 2.7)

Reorder the terms:
2x + -3(2.7 + 1.8x)
2x + (2.7 * -3 + 1.8x * -3)
2x + (-8.1 + -5.4x)

Reorder the terms:
-8.1 + 2x + -5.4x

Combine like terms: 2x + -5.4x = -3.4x
-8.1 + -3.4x
7 0
3 years ago
What is 4 1/2 plus 3 2/3 plus 1 3/4 plus 3/4
lozanna [386]

Answer:

The answer is 9 and 11/12

Step-by-step explanation:

4 and 1/2 + 3 and 2/3 + 3/4

=9 and 11/12

7 0
4 years ago
Read 2 more answers
What is the value of x in the equation -6/7 = -x/84?<br><br> A. –98<br> B. –72<br> C. 72<br> D. 98
Arlecino [84]
Use cross multiplication: 
\frac{-6}{7} = \frac{-x}{84}

(-6)*(84)=(-x)*(7)&#10;

-504=-7x&#10;

Divide both sides by -7 to find x: 
-504/-7=-7x/-7

Final answer: x=72 (C)

5 0
3 years ago
Read 2 more answers
PLEASE HELP GEOMETRY QUESTION!!
wolverine [178]
I just learned that a rhombus has equal opposite equal acute angles, opposite equal obtuse angles, and four equal sides. That means y is equal to all the sides! Angle x is 61° and y = 16 in

8 0
3 years ago
5x + 2x + 2 = 9x + 4​
bija089 [108]

Step-by-step explanation:

Given

5x + 2x + 2 = 9x + 4

9x - 5x - 2x = 2 - 4

9x - 7x = - 2

2x = - 2

x = - 2 / 2

Therefore x = -1.

5 0
3 years ago
Read 2 more answers
Other questions:
  • The lives of a premium sports car's brakes are normally distributed with a mean of 60,000 miles and a standard deviation of 4,00
    12·1 answer
  • I added a screenshot of my question
    5·1 answer
  • in a recent year one United States dollar was equal to about 82 Japanese yen how many Japanese yen are equal to $1,00 $1,000 $10
    13·1 answer
  • 1/3 of the fish in the tank are snappers. 2/9 of the fish are catfish and the rest are goldfish. There are 40 goldfish in the ta
    9·2 answers
  • The area of a rectangular carpet is 28 square feet. The length is three feet more then the width. Find the length and the width
    9·2 answers
  • You roll a 6 sided number cube. Use the complement to determine the probability of not rolling a 4.​
    9·1 answer
  • 22. Tebogo is driving to his mother's house the drives at 50kruh, it takes him
    8·1 answer
  • Four ninths minus four tenths equals blank ?
    11·2 answers
  • First answer gets brainliest. And one hundo points
    6·2 answers
  • Review the graph of function f(x).
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!