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
Debora [2.8K]
4 years ago
12

If x-y =8 find the value of y when x=3

Mathematics
1 answer:
DedPeter [7]4 years ago
8 0
Answer: y = -5

Substitute in 3 for x.
x - y = 8                            Substitution
3 - y = 8                            Subtract 3 from both sides
-y = 5                                Divide by -1 to both sides
y = -5                                Answer!

You can also check your work.
x - y = 8       
3 - (-5) = 8                  
3 + 5 = 8                        
8 = 8                                

You might be interested in
A triangle with a base of 4 centimeters and height of 3.5 centimeters. She found the area of the enlarged triangle. Her work is
Mamont248 [21]

Answer: She should have multiplied One-half (4) (3.5) by 5 squared.

Step-by-step explanation:

The calculation of Beth is wrong. Since Beth enlarged the triangle below by a scale of 5, she should find the area of the traingle and then multiply by 5².

This will be:

= 1/2 × 4 × 3.5 × 5²

= 2 × 3.5 × 25

= 175cm²

3 0
3 years ago
Read 2 more answers
Evaluate :<br> 5 - 3 x when x = - 7<br> Substitute - 7 for x.
monitta

Answer:

26 because if x= -7 then -3 X - 7 = +21

+21 +5 = 26

4 0
4 years ago
Read 2 more answers
What is 1680 mm in feet
marusya05 [52]

5.51181102 feet (5 feet 6 9⁄64 inches)

6 0
3 years ago
There were 72 runners to start a race. in the first half of the race, 13 of them dropped out. in the second half of the race, 23
Mariana [72]
All you would need to to is do 13+23= 33 to get the total amount of people who dropped out, then do 72 ( the number in the beginning and subtract 33 from it because those are the people who dropped out so 72-33=39. 39 people finished the race.
8 0
3 years ago
The parabola below is a graph of the equation, -y+x=6. Which of the points satisfy the inequality, -y+x ≤ -6 ? Check all that ap
Natalija [7]
The response

the point A(-6, 2)
we know that  <span>-y+x ≤ -6, the point satisfying this is </span><span>A(-6, 2)
proof -2+ (-6) = -8 less than -6</span>
5 0
4 years ago
Other questions:
  • In ΔUVW, w = 3 inches, ∠W=23° and ∠U=73°. Find the length of u, to the nearest 10th of an inch.
    13·1 answer
  • 3x – 1 &gt; 4x + 7<br> What’s the answer
    13·2 answers
  • Automated electron backscattered diffraction is now being used in the study of fracture phenomena. The following information is
    13·1 answer
  • a frame is 18.6 in tall and 1.5 in wide. if it is reduced to a height of 6.2 in, then how wide will it be?
    15·1 answer
  • 4-7x=2+6x what is the answer ?
    11·1 answer
  • The line that represents the equation y=8x−1 contains the point (k, 5). Find k.
    10·1 answer
  • The largest permanent Monopoly board is made out of granite and is located in San Jose California it is the shape of a square wi
    7·1 answer
  • 3x-y=7 into slope intercept form
    12·2 answers
  • The image is below please help
    11·2 answers
  • I need help with the answer
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!