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
svetlana [45]
3 years ago
9

Solve for N: 3n - 7 = 6n - 2n

Mathematics
1 answer:
jonny [76]3 years ago
3 0

Answer:

-7

Step-by-step explanation:

1. Combine Like Terms

3n-7=4n

2. Subtract 3n on both sides.

-7=n

3. You got your answer:)

You might be interested in
The product of two integers is 72.<br> If one integer is 9 what is the other integer?
lianna [129]

Answer:

8

Step-by-step explanation:

a*b=72

a=9

9*b=72

b=72/9

b=8

6 0
2 years ago
Will give brainliest!!
Akimi4 [234]

Answer: 942

Step-by-step explanation: 20 x 3.14 = 62.8                         62.8 x 15 = 942

5 0
3 years ago
Answer questions (a-d) for the following three data sets.
GrogVix [38]
The mean is
A. 8.4
B.5.2
C.9.4
6 0
3 years ago
suppose that you plan on taking a summer job selling magazines subscriptions . the magazine company will help you pay $0.75 for
alina1380 [7]

<u>Answer:</u>

Money earned by selling 175 magazine subscriptions will be 3176.25

<u>Solution: </u>

Given that you are planning to take a summer job selling magazine subscription.

For first subscription, magazine company will help you to pay $0.75

For each additional subscription sold, magazine company will pay you $0.20 more than what was paid for previous subscription.

So for second subscription, payments will be = 0.75 + 0.20 = 0.75 + 0.20 x 1

And for third subscription, payments will be = 0.75 + 0.20 = 0.75 + 0.20 x 2

Generalizing for nth subscription we get

Payments for nth subscription = 0.75 + 0.20(n-1)

so here we can see that arithmetic sequence is formed, having first term

a_1 = 0.75 and common difference = d = 0.20  

We need to determine sum of above arithmetic sequence for n = 175

<u><em>Formula for sum of arithmetic sequence is as follows </em></u>

\mathrm{S}_{\mathrm{n}}=\frac{n}{2}[2 a+(n-1) d]

In our case n = 175, a = 0.75, d = 0.20

\begin{array}{l}{=>\mathrm{S}_{175}=\frac{175}{2}[(2 \times 0.75)+(175-1) 0.20]} \\\\ {=>\mathrm{S}_{175}=\frac{175}{2}[1.5+(174 \times 0.20)]} \\\\ {\Rightarrow \mathrm{S}_{175}=\frac{175}{2} \times 36.3=3176.25}\end{array}

Hence money earn by selling 175 magazine subscriptions will be 3176.25

6 0
3 years ago
Which of the following is a valid use of the associative property of addition?
Ne4ueva [31]
B is the valid use of the associative property of addition
5 0
3 years ago
Other questions:
  • Number one is really confusing! Any help at all would be nice. Thank you
    6·1 answer
  • I don't know what to do
    15·1 answer
  • 3 3/5 × 2 2/3 <br> Answer in mixed number please
    14·1 answer
  • Y = 2 - 6x<br>17 y - x=1 solve the system​
    6·1 answer
  • 27.) FEMALE LAWYERS There are 1,094,751 active lawyers living
    13·1 answer
  • How to make an equation for unit rate
    9·1 answer
  • B Identify the coefficient and the number of terms in the
    9·1 answer
  • Can u help me with my work don’t send a link !!
    9·1 answer
  • In January Mr.Tan's students read 20 books. In February, they read 15 books. What is the percent increase or decrease in the num
    5·1 answer
  • Use the discriminant to determine the number of real solutions to the quadratic equation.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!