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
Komok [63]
3 years ago
11

Help please! I just need to know how to do this step by step...

Mathematics
2 answers:
Alex787 [66]3 years ago
7 0

-8 - 5n = 64 + 3n

    +5n          +5n           add 5n to both sides, 5n's cancel out on the left.

______________

-8 = 64 + 8n

-64 -64                          subtract 64 on both sides, 64's cancel out on the right.

______________

-72 = 8n

___  ___                       divide 8 on both sides, 8's cancel out from the right.

 8      8

n= -9, final answer

pashok25 [27]3 years ago
3 0

Answer:

-8 - 5n= 64 + 3n

+8 +8

=0 =72

-5n= 72 + 3n

-3n -3n

-8n= 72 divide both sides by -8

n= -9

You might be interested in
What is the slope of the line?
erastovalidia [21]
The slope of what line or are you looking for detention
3 0
3 years ago
Read 2 more answers
Helpmehhhhhhhh plzzzzzzzzzzz
valentinak56 [21]
8 is 53.8
Cuz 66.93-6.57x2= 53.78 rounded to the nearest tenth 53.8
3 0
3 years ago
"a number greater than or<br> equal to 12"
Nesterboy [21]

Answer:

a number greater than 1 equal to 12 is 6

5 0
4 years ago
Read 2 more answers
Which equation uses the distributive property to show 6 × 78 = 468? A) 6 + (70 × 8) = 468 B) 6 × (70 + 8) = 468 C) 6 + (70 + 8)
Nesterboy [21]

Answer:

b

Step-by-step explanation:

you can break the 78 into 70 and 8, and multiply them separately by 6 and then add the two answers to get 468

7 0
4 years ago
Read 2 more answers
A company produces fruity drinks that contain a percentage of real fruit juice. Drink A contains 20% real fruit juice and Drink
Setler [38]

Answer:

There needs to be 300 liters of Drink A and 270 liters of Drink B

Step-by-step explanation:

Let a = the amount of Drink A and b = the amount of Drink B

Multiplying a number by 0.2 is the same as calculating 20% of it and same goes with 15% and 0.15. This makes our equation for the amount of fruit juice:

0.2a + 0.15b = 100.5

We know what the difference between a and b will be 30 liters so:

a - b = 30

Now we have our system of equations

To cancel out a, we can multiply the first equation by -5 so we will now have:

-a - 0.75b = -502.5

a - b = 30

Adding these two equations together, we get:

-1.75b = -472.5

Both sides are negative, so we can take the negative signs away.

1.75b = 472.5

Now divide both sides by 1.75

b = 270

Plugging 270 into b, we have:

a - b = 30

a - 270 = 30

Add 270 to both sides

a = 300

There needs to be 300 liters of Drink A and 270 liters of Drink B

7 0
3 years ago
Read 3 more answers
Other questions:
  • At Smith Mountain Orchard, 3 pounds of apples cost $3.24.
    8·1 answer
  • ( 3 + 2i ) + ( 6 - 8i )
    14·1 answer
  • Can someone please help me with this question???
    9·1 answer
  • Help with this math problem please!!!!!!
    13·1 answer
  • HELP. PLEASE I put the coordinates but don't know what the answer is HELP ME​
    10·1 answer
  • Which equation has solutions of 6 and -6
    7·2 answers
  • The National Coffee Association reported that of U.S. adults drink coffee daily. A random sample of U.S. adults is selected. Rou
    7·1 answer
  • Set up a proportion to solve for x. <br> A 18<br> B) 9<br> C) 4.2<br> D) 3<br> HELPP
    14·1 answer
  • If line segment AB represents ​%, what is the length of a line segment that is​ 100%?
    13·1 answer
  • Please use the pic thanks
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!