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
allsm [11]
3 years ago
12

50 - 3n = 7n + 80I need help on the steps on doing this problem??

Mathematics
1 answer:
polet [3.4K]3 years ago
6 0
50 - 3n = 7n + 80
    +3n     +3n ( add 3n to both sides)
50 = 10n + 80
-80            -80 (subtract 80 from both sides)
-30 = 10n (divide both sides by 10)
n = -3
You might be interested in
Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equat
Nina [5.8K]

Answer:

Correct choice is D

Step-by-step explanation:

Given the system of two equations:

\left\{\begin{array}{l}4x+y=8\\6x-9y=12\end{array}\right..

Fro mthe first equation

y=8-4x.

Substitute into the second equation 8-4x instead of y:

6x-9(8-4x)=12.

Note that 8-4x=-4x+8, then the second equation will take look

6x-9(-4x+8)=12.

6 0
3 years ago
Read 2 more answers
jenny is comparing the cost of two packages of socks. one package has 8 pairs for $12. Another package has 3 for $6. Are the rat
Ainat [17]
In order to solve this we need to make on part of both statements equal.

Since 12 is divisible by 6 lets do that.

Multiply everything in the second package by 2.

It then becomes 6 pairs for $12.

So now  have have 6 or 8 pairs for $12.

You are getting a different amount for the same price therefore they are not proportional.
5 0
3 years ago
Please help me I appreciate it
miss Akunina [59]

Answer:

m∠SRT = 33°     ∵ m∠QRT = m∠SRT

Step-by-step explanation:

Given the diagram,

RT bisects ∠SRQ, and m∠QRT = 33°

RT bisecting ∠SRQ means RT will bisect ∠SRQ into two equal angles, which are:

m∠QRT = m∠SRT

as

m∠QRT = 33°

so

m∠SRT = 33°     ∵ m∠QRT = m∠SRT

6 0
3 years ago
What is the definition of intersection In math?
miskamm [114]

Answer:

Step-by-step explanation:

an intersection is a point, line, or curve common to two or more objects

6 0
3 years ago
Read 2 more answers
The clock was exactly on time at 7am at 1pm the clock was 228 seconds late at that rate how slow was the clock half an hour
yan [13]

Answer:

19 seconds.

Step-by-step explanation:

Given that the clock was exactly on time at 7am, and at 1pm the clock was 228 seconds late, to determine, at that rate, how slow was the clock half an hour, the following calculation must be performed:

1 PM = 13:00

13 - 7 = 6

228/6 = 38

38/2 = 19

Thus, every half hour the clock is delayed 19 seconds.

4 0
3 years ago
Other questions:
  • Find the inverse of the function f(x)= 2x - 4 and show explain each step used to find the inverse.
    13·1 answer
  • Please help The weight of a full steel bead tire is approximately 800 grams, while a lighter wheel weighs only 700 grams. What i
    8·1 answer
  • Elin has made twenty-nine note cards for her friends. She plans to send out a total of forty cards. What percentage of the cards
    14·1 answer
  • The school purchased baseball equipment and uniforms for a total cost of 1762.00. The equipment costs 598 and the uniforms were
    11·1 answer
  • A spinner with six sections labeled A through F is spun. What is the probability of spinning the letter labled D?
    9·2 answers
  • Is thus correct domain and range using interval notation?
    14·1 answer
  • A trangle has a 30 angle and a 55angle .what is the other angle ?how do you know?​
    12·1 answer
  • 3/4 ÷ 6 please help me
    11·1 answer
  • A line has a slope of negative 3 and a y-intercept of 3 what is the x intercept of the line​
    15·1 answer
  • 30 Puntos a una buena respuesta, por favor me urge.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!