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
kozerog [31]
3 years ago
13

Solve. 3n-7+2n=8n+11

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0
------------------------------------
<span>Question:
</span>------------------------------------<span>
3n - 7 + 2n = 8n + 11

------------------------------------
Combine like terms:
</span>------------------------------------<span>
5n - 7 = 8n + 11

</span>------------------------------------<span>
subtract 8n from both sides:
</span>------------------------------------<span>
-3n - 7 = 11

</span>------------------------------------<span>
Add 7 to both sides
</span>------------------------------------<span>
-3n = 18

</span>------------------------------------
Divide by -3 on both sides:
------------------------------------
n = -6

------------------------------------
Answer: n = -6
------------------------------------
You might be interested in
Graph a linear function with a slope of –2 and a y-intercept of 7.
Setler79 [48]

Answer:

Sorry for the sloppiness of the drawing

Step-by-step explanation:

6 0
3 years ago
Brayden is simplifying the expression 4n – (n – 3)2. He begins by distributing the negative to the terms inside the parentheses.
RoseWind [281]
The right approach would be:
4n - (2n - 6)
4n - 2n + 6
2n+6

The options confused me. So pick the answer based on the solution.
7 0
3 years ago
Read 2 more answers
One cake feeds 14 people. Use a proportion to find how many cakes must be purchased to feed 60 people.
katrin2010 [14]

Answer:

5 cakes


hope it helps

Step-by-step explanation:

if one cake feed 14 people and you are tying to fine out how many cakes you need to feed 60 people you would have to divide 60 by 14

1 cake = 14 people

? cakes = 60 people

60 ÷ 14 = 4.28

so in order to have enough for 60 people you need to round so you would need 5 cakes

to check you answer you can multiply 5 by 14 and you answer should be the amount of people

5 x 14 = 70

why  cant it be 4? well because if you buy 4 cakes there wont be enough for 60 people and to make sure it wont be enough you can multiply 4 x 14

4 x 14 = 56

so 4 cakes only feeds 56 people so that is why your answer is 5 cakes are needed



8 0
4 years ago
There are 14 apples in a blanket. 9 of these apples are green. The rest of them are red.
Vinvika [58]
Red apples in the blanket: 5:14
Green apples to red: 9:5

4 0
4 years ago
Read 2 more answers
A car used 16 gallons of gasoline and traveled a total distance of 460 miles. The car's fuel efficiency is 30 miles per gallon o
AURORKA [14]

Answer:

12 gallons

Step-by-step explanation:

Total gallons = 16 gallons

Total distance = 460 miles

Fuel efficiency in the highway = 30 miles per gallon

Fuel efficiency in the city = 25 miles per gallon

Let

h = gallons of gasoline were used on the highway.

460 = 30h + 25(16 - h)

460 = 30h + 400 - 25h

460 - 400 = 30h - 25h

60 = 5h

h = 60/5

h = 12 gallons

12 gallons of gasoline were used on the highway.

7 0
3 years ago
Other questions:
  • Find the total travel time: Depart 11:00 am CST Arrive 7:00 pm PST
    5·1 answer
  • Can someone help me with this
    12·1 answer
  • For each sequence,find the first 4 terms and the 10th term<br> a) n+5<br> b)2n-1
    5·1 answer
  • The length of a rectangle is 4 less than 3 times the width. Perimeter is 40 inches.What is the area of the rectangle?
    8·1 answer
  • If 7x=3y and 5y=7z then X/Z?
    8·1 answer
  • My Scando-Germanic friend, Odd Zahlen, often brings a die to class to answer multiple-choice final exam questions. Each multiple
    12·1 answer
  • I need help with these 3 please help!
    11·2 answers
  • Choose the fraction that goes in the blank 1/2 &lt; ____ &lt; 4/5
    7·1 answer
  • Divide Rs 60 into the ratio of 1:4​
    11·1 answer
  • Your aunt invites you to travel with her to Australia but you must purchase your own airfare. After watching the price of plane
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!