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
Serhud [2]
4 years ago
13

Someone please solve this 3n+9n=-2(7-4n)-(1+n)

Mathematics
2 answers:
Ganezh [65]4 years ago
7 0

Answer:

n=-3

  sorry no steps

Andru [333]4 years ago
6 0

Answer:

<h2>n= -3</h2>

Step-by-step explanation:

3n+9n=-2(7-4n)-(1+n)\\\\\mathrm{Add\:similar\:elements:}\:3n+9n=12n\\\\12n=-2\left(7-4n\right)-\left(1+n\right)\\\\\mathrm{Expand\:}-2\left(7-4n\right)-\left(1+n\right):\quad 7n-15\\\\12n=7n-15\\\\\mathrm{Subtract\:}7n\mathrm{\:from\:both\:sides}\\\\12n-7n=7n-15-7n\\\\Simplify\\\\5n=-15\\\\\mathrm{Divide\:both\:sides\:by\:}5\\\\\frac{5n}{5}=\frac{-15}{5}\\\\Simplify\\\\n=-3

You might be interested in
I'm stuck. plz help I dont know how​
Nikolay [14]

Answer:

1)  regular price ⇒ $X

Sale price:75,24

Regular price: 100, X

2) The Ratio of the numbers in the first column equals the to ratio

of numbers in the second one

so.. \frac{75}{124}=\frac{100}{x} \\

X=100 ×24/75

X=$32

Regular price-sale price=32-24=$8

hope it helps...

6 0
3 years ago
Can someone please help?​
aleksandr82 [10.1K]

Answer:

24

Step-by-step explanation:

Volume = whl

V = 8 x 1 x 3 = 24

hope this helps and is right!! p.s. i really need brainliest :)

6 0
2 years ago
Read 2 more answers
The expression 27.50+ 0.11x models the monthly cost in dollars of a phone plan. In the
AlladinOne [14]

Answer: 31.57

Step-by-step explanation: If x is 37, that would mean 0.11 x 37 and that equals 4.07. Then you would add 27.50 and 4.07 and get 31.57.

6 0
3 years ago
I need help PLZ!! I need this now!
kherson [118]
I would say C because it would make the most sense because it doesn't describe or state the other two choices given .
5 0
4 years ago
Read 2 more answers
Directions: Find the domain and range of each function
rjkz [21]
Domain (-infinity,infinity)
Range (-infinity, infinity)
5 0
3 years ago
Other questions:
  • The heights of all adult males in Croatia are approximately normally distributed with a mean of 180 cm and a standard deviation
    7·1 answer
  • Solve the percent problem
    6·1 answer
  • I need help please help
    10·2 answers
  • How do you solve for c in this problem? 9(c+5)+3c=11
    11·2 answers
  • Write an algebraic expression: X squared less than 15
    8·1 answer
  • George borrowed $300 from a family member. He told the family member he would pay $50 each month for 6 months to pay it all back
    11·2 answers
  • 2. I am a number. If you multiply me by any other number, the answer will always remain the same. Who am I​
    10·2 answers
  • Dale is in a ski rental shop trying to decide which equipment to rent for the day. The shop offers 4 kinds of skis and 3 kinds o
    14·2 answers
  • Find the area if the sides are 48 feet by 75 feet. *
    14·2 answers
  • Select the statement that correctly compares two numbers.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!