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]
4 years ago
5

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

Mathematics
1 answer:
vaieri [72.5K]4 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
Find the slope and the y-intercept of the graph of the linear equation.<br> 0 = 1 - 2y + 14x
yarga [219]
The slope is 7 and the y intercept is (0,1/2):)
6 0
3 years ago
What number is multiplied to -1 and then adds to -5
Kryger [21]
Y: is the number

[Y*(-1)]+(-5)
(-Y)+(-5)
-Y-5

<span>I hope it helps you :)</span>

4 0
3 years ago
What is the area of a 320 ft semicircle?
Sever21 [200]

Answer: they do not have enough info but I will try my best to answer  if im wrong its not my fault  so please add more info

Solution

2. I know that for a Semi-Circle Area = 320 . From this find out Area of the Semi-Circle.

Solution:

Here Area=320(Given)

Area=

πr2

2

r2=

Area⋅2

π

r2=

320⋅2

22

7

r=14.2701

Diameter(d)=2r

=2⋅14.2701

=28.5402

Circumference=πr

=

22

7

⋅14.2701

=44.849

Perimeter=πr+2r

=

22

7

⋅14.2701+2⋅14.2701

=44.849+28.5402

=89.6979

Step-by-step explanation:

Byee stay safe: Wear your mask, drink water and stan bts

also can I have brainliest

4 0
2 years ago
A bottle of juice states that a serving is 1/2 cupshow many servings are in a 2 pint container
almond37 [142]
There are four servings in a two-pint container.
8 0
4 years ago
Se tiene el mismo número de cajas de manzanas que de limones. Si en una caja de manzanas caben 13 unidades y en una de limones c
sattari [20]

Answer: 6 cajas de cada tipo de fruta.

Step-by-step explanation:

En cada caja de manzanas, tenemos 13 manzanas.

En cada caja de limones, tenemos 17 limones.

Si el numero total de cajas es C, entonces el numero total de manzanas es:

C*13

y el numero total de limones es: C*17.

Si en total tenemos 180 frutas, entonces tenemos que:

C*13 + C*17 = 180

C*(13 + 17) = 180

C*30 = 180

C = 180/30 = 6

Tenemos 6 cajas de cada tipo de fruta.

7 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP ASAP!!
    7·1 answer
  • How do you subtract an integer from another integer without using a number line or counters? Give an example.
    12·1 answer
  • The bill, included tax, was $50. Carl left a tip of $8 what percent of the bill did carl leave as a tip?
    15·1 answer
  • Identify the slope of the line that passes through the points (-2,5) and (1,-2)
    14·1 answer
  • Use the gcf and the distrubitive property to find the expression that is equivalant to 48+56
    5·1 answer
  • ANY BRAINLY TEACHER ONLY PLEASE HELP ME!!!
    14·1 answer
  • Help with 4, 5, and 6, please!
    5·1 answer
  • What is 26,576.96 rounded to the nearest hundredth?
    15·2 answers
  • Kurt had a plate of pancakes at a diner. The bill, with tax, was $6.75. He gave the waiter a tip equal to 20% of the bill. What
    14·2 answers
  • Answer one question.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!