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
Nastasia [14]
3 years ago
5

15= -45 + 5n solve for n

Mathematics
2 answers:
Oksana_A [137]3 years ago
6 0

Answer: n=12

First, add 45 to both sides, giving you 60=5n

Then, divide both sides by 5, giving you 12=n

Step-by-step explanation:

Karolina [17]3 years ago
5 0

Answer:

n = 12

Step-by-step explanation:

Solve for n:

15 = 5 n - 45

15 = 5 n - 45 is equivalent to 5 n - 45 = 15:

5 n - 45 = 15

Add 45 to both sides:

5 n + (45 - 45) = 45 + 15

45 - 45 = 0:

5 n = 15 + 45

15 + 45 = 60:

5 n = 60

Divide both sides of 5 n = 60 by 5:

(5 n)/5 = 60/5

5/5 = 1:

n = 60/5

The gcd of 60 and 5 is 5, so 60/5 = (5×12)/(5×1) = 5/5×12 = 12:

Answer:  n = 12

You might be interested in
2x+5y=20. , -2x+20y=-90. one solution. infinity many ir no solution. use elimination to find your answer​
scoundrel [369]
2x+5y=20
X=10-2.5y

-2(10-2.5y)+20y=-90
-20+5y+20y=-90
25y=-70
Y=2.8

2(2.8)+5y=20

5.6+5y=20
5y=14.4
Y=2.88

CHECK:
2(2.8)+5(2.88)=20

5 0
3 years ago
Common household electric current is called alternating current because the current alternates direction within the wires. The v
Rainbow [258]

Answer:

n = 18 cycles

Step-by-step explanation:

To know how many times does the current oscillates in the given time, you take into account that the number of oscillation can be calculated by using the following expression:

n=ft         (1)

f: frequency of the oscillation of the current

t: time = 0.30s

The frequency is the number of cycles per second, that is, f = 60 cycles/s

You replace the values of f and t in the equation (1):

n=(60\frac{cycles}{s})(0.30s)=18\ cycles

In 0.30s the current oscillates 18 times

5 0
3 years ago
The break even point is the point at which income equals expenses. Ridgemont High School is paying $13,200 for thr writing and r
Nikolay [14]

Answer:880

Step-by-step explanation: They need to cover expense of $13200. If printing fee is $25 and they sell the books for $40 each, then that means when selling a book they cover expense of printing plus they earn $15 per book.

So if they earn $15 per book that means they have to sell 13200/15=880 books to break even.

If you want to solve this by using equation the this would look like this:

expenses: $13200 + $25x where x is number of books sold

earnings: $40x

Equation:

13200+25x=40x

13200=15x

x=880

4 0
2 years ago
How to algebraically find the limit of a function as x approaches infinity?
Sauron [17]

Well... One way you can do this is by testing a set of arrays and see the trend. If I chose to find what y1 is in (100, y1) and what y2 is in (101, y2), I would find the difference between y2 and y1. If y2 - y1 is positive, this means there is a positive relationship and y is also approaching POSITIVE infinity. A negative relation means that it is approaching NEGATIVE infinity. However, it could be approaching a single number like "4" for instance, and you just need to plug in the right number of data sets to make that educated guess.

Formula Example:
5 + 1 / (x + 1) will always approach 5 because "1 / (x + 1) will approach 0".

Hope this helps.

5 0
3 years ago
Consider the following information about travelers on vacation: 40% check work email, 30% use a cell phone to stay connected to
allsm [11]

Answer:

There is a 40% probability that a randomly selected traveler whochecks work email also uses a cell phone to stay connected.

Step-by-step explanation:

a) What is the probability that a randomly selected traveler whochecks work email also uses a cell phone to stay connected?

The problem states that 40% of the travelers on vacation check work email. And 16% of them check both work email and use a cell phone.

So, the probability is the division of those who use both email and cellphone by those who use email.

P = \frac{0.16}{0.40} = 0.4

There is a 40% probability that a randomly selected traveler whochecks work email also uses a cell phone to stay connected.

5 0
3 years ago
Other questions:
  • What number would complete the pattern below? 66 73 13 21 52 __ 10 20
    8·2 answers
  • <img src="https://tex.z-dn.net/?f=6%20%5Ctimes%20x%20%3D%20%20-%2024" id="TexFormula1" title="6 \times x = - 24" alt="6 \times
    12·1 answer
  • Christy drove 300 miles on her vacation. She drove an average of 1.25 times faster on the second 150 miles of her trip. Which ex
    5·1 answer
  • Solve each equation and verify the solution<br><br> a) 5+2x=25<br> b) 14=5x-6<br> c) 15=4x+7
    11·1 answer
  • Find the vertex, focus, directrix, and focal width of the parabola.
    7·2 answers
  • Which property states that if a = b, then b = a?
    7·2 answers
  • Use completing the square to solve the equation x2+16x=−44 . First determine the number you must add to both sides of the equati
    5·1 answer
  • Find the number of possible ways one can choose marbles from a bag containing three marbles: a) if the order is important b) if
    9·1 answer
  • Your family goes to a Southern-style restaurant for dinner. There are 6 people in your family.
    5·1 answer
  • WILL GIVE BRAINLIST PLS HURRY
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!