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
morpeh [17]
3 years ago
12

3n + 6n -4 = 2n + 2 + 5n​

Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0

Answer:

3n +6n-4=2n+2+5n

9n-4=7n+2

9n-7n=2+4

2n=6

n=6÷2

n=3

You might be interested in
Natasha ran 3.1 kilometers. Tonya ran 4 meters more than half as far as Natasha. How many meters did Tonya run?
Levart [38]
The answer would be idk
So it 5.6
4 0
3 years ago
An isosceles triangle has a perimeter of 18 cm. Find a function that models its area A in terms of the length of its base b.
IgorLugansk [536]
So.... notice the picture below

now, we know what the "height" or "altitude" is
now, we also know the perimeter is 18cm

so, k + k + b = 18
or 2k + b = 18
thus  \bf k=\cfrac{18-b}{2}

so... one can say that \bf \textit{area of a triangle}=A=\cfrac{1}{2}bh\qquad 
\begin{cases}
b=b
\\\\
h=\sqrt{k^2-\left( \frac{b}{2} \right)^2}
\\\\
h=\sqrt{k^2-\frac{b^2}{4}}\\
--------------\\
k=\frac{18-b}{2}\qquad thus\\
--------------\\
h=\sqrt{\left( \frac{18-b}{2} \right)^2-\frac{b^2}{4}}
\end{cases}\\\\
-----------------------------\\\\
A=\cfrac{1}{2}\cdot b\cdot \sqrt{\left( \frac{18-b}{2} \right)^2-\frac{b^2}{4}}

and you can simplify it if you wish.. not sure you have to

7 0
3 years ago
Amie has 9 cats. each cat eats 1/3 can of food each day. how many cans of food are used each day?
Basile [38]

Answer:

3 Cans.

Step-by-step explanation:

Each cat can take one portion. so

9 ÷ 3 = 3

3  cans a day

3 0
3 years ago
the sides of the rectangle are inreased by a scale factor of 4. The perimeter of the smaller retangle is 20 cm. What is the peri
Vedmedyk [2.9K]
The height of the smaller rectangle, let us say is 5
5 x 4 = 20
(multiply height of rectangle to scale factor)
the length is 4
4 x 4 = 16
(multiply length of rectangle to scale factor)

to find larger factor, divide smaller with larger
16/20 = 1/4

scale factor should be 1/4

multiply 20 with 4

perimeter of larger should be 80

hope this helps

6 0
3 years ago
The least amount of wrapping paper needed to wrap a cube-shaped gift is 150 square inches. How long is one side of the gift?
devlian [24]


Isn't the only thing you have to do is since a cube has 6 sides than you would have to do 150 divided by 6. If I am correct.


5 0
3 years ago
Other questions:
  • Pls help idk what to do
    14·1 answer
  • A car came to a stop from a speed of 28 m/s in a time of 2.1 seconds. What
    12·2 answers
  • If y= 6 when x= 24, find the value of x when y= 7
    12·2 answers
  • This is a math question plz try you best
    15·1 answer
  • An Iphone 6S costs $449. There is a discount of 15%. What is the new cost?
    10·2 answers
  • What dividend is represented by the synthetic division below?
    10·2 answers
  • At the end of last year, the population of Alice's hometown
    10·1 answer
  • If k is the incenter of def find each measure
    10·1 answer
  • Please find the value of x please
    10·1 answer
  • Let's calculate the surface of the ABC triangle from the image if the area of the triangle DBC is 40 square unit,| BC| = 8i| AB|
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!