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
Vadim26 [7]
3 years ago
5

3x+7= x-1 does x = -4?

Mathematics
1 answer:
vaieri [72.5K]3 years ago
8 0
Subtract x from both sides:
(3x - x) + 7 = (x - x) - 1

3x - x = 2x:
2x + 7 = (x - x) - 1

x - x = 0:
2x + 7 = -1

Subtract 7 from both sides:
2x + (7 - 7) = -7 - 1

7 - 7 = 0:
2x = -7 - 1

-7 - 1 = -8:
2x = -8

Divide both sides by 2:
2x / 2 = -8 / 2

2 / 2 = 1:
x = -8 / 2

The gcd (greatest common denominator) of 8 and 2 is 2:
-8 / 2 = 2(-4) / 2x1 = 2/2 x - 4 = -4

x = -4

You might be interested in
How can I solve this problem? 4/6 minus 2/9?
Maru [420]
Here are the steps, also use photo math for fractions it explains and shows step by step. Also its free

4 0
3 years ago
What Is The radius? (Round to the nearest tenth)
mr_godi [17]
The radius can be found with the Pythagorean theorem. Assuming r is the radius, 14²+r²=17². Multiply it out to 196+r²=289. Subtract 196 from both sides and you're left with r²=93. So, r=√93, or about 9.6 to the nearest tenth.
8 0
4 years ago
Read 2 more answers
A real estate agent earned $7200 commission on a property sale of $240,000. What is her rate of commission?
cluponka [151]

The real estate agent has a commission rate of 33.3%

if youy divide 240000 by 7200 then you would get 33.33333333

which would mean she has a (1/3) commission rate. hope this helps you out!

8 0
4 years ago
For the equation : y = 2x + 10. Write any two possible solutions in ordered form. (Hint: e.G ( 4, 18))
nalin [4]

Answer:

(0, 10)

and

(1, 12)

5 0
3 years ago
Read 2 more answers
Ali surveyed 200 students at a school and recorded the eye color and the gender of each student. of the 80 male students who wer
Aloiza [94]
Total number of students surveyed = 200
Number of male students = 80
Number of female students = 200 - 80 = 120

Number of brown eyed male students = 60
Probability of a brown eyed male student = 60 / 80 = 0.75.

Since, <span>eye color and gender are independent, this means that eye color is not affected by the gender. Thus, we expect a similar probability of brown eye for female as we had for male.

Let the number expected of brown eyed females be x, then x / 120 = 0.75.

Thus, x = 120(0.75) = 90.

Therefore, the number female students surveyed expected to be brown eyed is 90.</span>
7 0
3 years ago
Other questions:
  • If a migrating hawk travels m mph in still​ air, what is its rate when it flies into a steady headwind of 3 3 ​mph? what is its
    12·2 answers
  • Consider the following pair of equations:
    8·1 answer
  • How fast should the ant walk to go around the rectangle in 4 minutes?
    15·1 answer
  • What is pi minus 6/5 pi in a fraction
    13·1 answer
  • What is the range of the funtion?<br>​
    8·1 answer
  • Terri has 5 boxes of flower seeds. She wants to give the seeds away to friends. If she gives 1/8 of a box away how many people c
    8·1 answer
  • An accountant is monitoring the average rates per hour for four employees.
    13·1 answer
  • Pls help with math ASAP
    7·1 answer
  • HELP I NEED HELP ASAP
    13·2 answers
  • Is one-half of a square smaller than one-quarter of the same square? How do you know?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!