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
lubasha [3.4K]
2 years ago
8

Solve 3x-1=5x+7 Please help

Mathematics
1 answer:
hodyreva [135]2 years ago
7 0

Answer:

3x - 1 = 5x + 7 \\  \\ 5x - 3x = 7 + 1 \\  \\ 2x = 8 \\  \\ x =  \frac{8}{2}  \\  \\ x = 4

# Jerry Don is here#

You might be interested in
Determine the roots of the following function of the quadratic formula:<br> x^2-5x-4=0
noname [10]

Answer:

4,1

Step-by-step explanation:

(x-4)(x-1)

x=4 or x=1

7 0
3 years ago
Read 2 more answers
The ratio of boys to girls at a movie is 3:4 . If there are 16 girls ​, how many boys are at the​ movie?
Annette [7]

Answer:

12 boys

Step-by-step explanation:

  1. Set up a proportion: \frac{3}{4} = \frac{x}{16}  
  2. Cross multiply, then divide: 3 × 16 = 48, 48 ÷ 4 = 12

I hope this helps!

8 0
3 years ago
Read 2 more answers
I REALLY need help I'll give anyone who can help me with any or all of these 50 points and brainliest
Alex787 [66]
Hope this helps?


Desmos is a great resource to help you understand the concept.

5 0
2 years ago
jem pastes 21 photos and 15 postcards in a scrap album. she puts 3 items on each page. how many pages does jem fill in the scrap
ddd [48]
12 pages

Each side count as a page

21+15=36 36/3=12
6 0
4 years ago
A plane flying at a certain altitude is observed from two points that are 2.2 meters apart. The angles of elevation made by the
lana [24]
tan(72)= \frac{y}{x}  ; tan(55)= \frac{y}{2.2 + x}
y=xtan(72);y=(2.2+x)tan(55)
So we are to merge the two equations into one, since both of the equations are equal to y. a = b, b = c therefore, a = c.
xtan(72)=2.2tan(55)+xtan(55)
We are to isolate x.
x[tan(72)-tan(55)]=2.2tan(55)
x=\frac{2.2tan(55)}{tan(72)-tan(55)}
The value of x is approximately, 1.9047m
Then, substitute the value of x from y=xtan(72)
y=1.9047tan(72)
y = 5.862m
Round up, then the answer would be D.

7 0
3 years ago
Other questions:
  • What is the standard form of the equation?
    7·1 answer
  • Find the area of trapezoid
    10·1 answer
  • IM GIVING BRAINLIEST AND 100 POINTS NO JOKE. PLEASE HELP
    5·2 answers
  • 5x^2+3x-6x^3+4x^2+2x^3-x+10 when this polynomial is simplified, what is the coefficient of x^3?
    13·1 answer
  • (x - 3)(x2 – 5x + 2)
    13·2 answers
  • To all math experts here. Please answer it.​
    5·1 answer
  • Calculate a negative co-terminal angle for θ=π3
    9·1 answer
  • Estimate a 20% tip on a dinner bill of $131.58 by first rounding the bill amount to the nearest ten dollars.
    8·1 answer
  • Find the output, y, when the input, x, is -4.
    15·1 answer
  • Show that x = -5 is a solution to the inequality 18x − 42 ≠ 7x
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!