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
Debora [2.8K]
4 years ago
7

5n = 8n + 30 help me pleaseeeeee

Mathematics
2 answers:
Aleonysh [2.5K]4 years ago
6 0

Answer:

n = -10

Step-by-step explanation:

5n = 8n + 30

you move 8n over by subtracting it from both sides

5n -8n = 8n -8n +30

add like terms

-3n = 30

then divid both sides by -3

-3n/-3 = 30/-3

n = -10

fgiga [73]4 years ago
3 0
To find n
1. Subtract 8n from both side to get -3n=30
2. Divide both sides by -3 to get n=-10
You might be interested in
What number goes in the box below to make the statement true?
Schach [20]

Answer:

5000

Step-by-step explanation:

4 0
3 years ago
P=$222 r=12% Y=10 A=?
sergey [27]
To solve for the A or the principal amount plus interest you can use two formulas:

A = P + I

Where: P = Principal
             I  = Interest

or you can use 

A = P (1+ rt)

Where: P = principal
             r  = rate in decimal
             t  = time in years

With your given you can use the second one, without having to use the first. 
Given that the Principal amount is $222 and the rate is 12% and time is 10 years, we first need to convert your rate into decimal by dividing the value in percent by 100 which will yield 0.12. 

Then now we can just input the data that you know into the formula:
A = P(1+ rt)
   = $222(1 + (0.12)(10))
   = $222(2.2) 
   = $488.40

Your A is then equal to $488.40

If you need to get the simple interest all you need to use is the first formula given:

A = P + I
for the interest you transpose the P to the side of the A and you will get:
I = A - P
  = $488.40 - $222
  = $266.40

$266.40 is the added interest to the principal amount. 
7 0
3 years ago
Which equation shows the value of -2/5 - -9/15
Alika [10]

Answer:

D) 3/15

Step-by-step explanation:

(-2/5) - (-9/15) = (-6/15) - (-9/15) = (-6/15) + (9/15) = 3/15

6 0
3 years ago
Why do you multiply by a power of 10 when writing a repeating decimal as a rational number
stira [4]
1.28 = 128 * 10^-2

128 * (1/10^2)

128 / 10^2

128 / 100

1.28


Because, it's literally the same thing mathematically if you worked it out. Though, as I'm sure you're aware, it's just a much shorter and cleaner way of writing out large or small numbers.
8 0
3 years ago
Read 2 more answers
HELP QUICK PLEASE 15 points!!!
Reil [10]

Answer:

I think the ans is option 'a'

Final Answer:

Corresponding Angles Theorum; ∠AGF and ∠EHD are congruent

3 0
3 years ago
Other questions:
  • How to cheat using my math lab ?
    14·2 answers
  • The question is in a screen shot
    6·2 answers
  • 2x+3y=12 how do I solve?
    12·1 answer
  • Which statement about this figure is true?
    8·2 answers
  • (10 POINTS AND BRAINLIEST FOR BEST)Which number sentence represents the model?
    10·2 answers
  • What is the final transformation in this sequence of
    15·2 answers
  • What is the slope of the line (2,3) (1,-2)?
    11·2 answers
  • 4
    14·2 answers
  • Identify the parent function.
    6·1 answer
  • Need help asapppp !! this is due by today !!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!