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
N76 [4]
3 years ago
5

Solve: (15/x)+(9x-7)/(x+2)=9

Mathematics
1 answer:
hram777 [196]3 years ago
3 0

Answer:x=3

Step-by-step explanation:

D( x )

x+2 = 0

x = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

x = 0

x = 0

x in (-oo:-2) U (-2:0) U (0:+oo)

(9*x-7)/(x+2)+15/x = 9 // - 9

(9*x-7)/(x+2)+15/x-9 = 0

(x*(9*x-7))/(x*(x+2))+(15*(x+2))/(x*(x+2))+(-9*x*(x+2))/(x*(x+2)) = 0

x*(9*x-7)+15*(x+2)-9*x*(x+2) = 0

9*x^2-9*x^2+8*x-18*x+30 = 0

30-10*x = 0

(30-10*x)/(x*(x+2)) = 0

(30-10*x)/(x*(x+2)) = 0 // * x*(x+2)

30-10*x = 0

30-10*x = 0 // - 30

-10*x = -30 // : -10

x = -30/(-10)

x = 3

x = 3

You might be interested in
At the beginning of year 1, Bode invests $250 at an annual simple interest rate of 3%. He makes no deposits to or withdrawals fr
xz_007 [3.2K]

Answer:

D.A(n) = 250 + (n – 1)(0.03 • 250); $347.50

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=(14-1)=13\ years\\ P=\$250\\r=0.03

substitute in the formula above

A=\$250(1+0.03*13)

A=\$250(1.39)=\$347.50

8 0
3 years ago
Can somebody help me? Thanks!
ICE Princess25 [194]

Answer: both our A

Step-by-step explanation:

8 0
3 years ago
Go to a clothing store with
olga2289 [7]

Answer:

original price $75

discount $18.75

sale price $56.25

Step-by-step explanation:

I found a pair of dress pants for $75.

Since the discount is 25%, then the discount is

25% of $75 = 0.25 × $75 = $18.75

The sale price is the original price, $75, minus the discount, $18.75.

$75 - $18.75 = $56.25

5 0
1 year ago
Question is in picture
Maslowich

Step-by-step explanation:

you're multiple times a day po

3 0
2 years ago
Read 2 more answers
Find the difference 77/8-3 1/4
gulaghasi [49]
6.4.. Unless you need it in a fraction..
8 0
3 years ago
Other questions:
  • In isosceles triangle GHK below, what is the value of m?
    15·2 answers
  • 5 Any organism that has a skeletal system is a A. single-celled organism. B. colonial organism. C. multicellular organism. D. pa
    9·1 answer
  • a map of Australia has a scale of one centimeter equals 110 kilometers if the distance between Darwin and Alice Springs is 1444
    12·1 answer
  • Consider the problem of washing dishes by hand. suppose washing a dish takes 30 seconds and drying a dish takes an additional 30
    12·1 answer
  • Sharon bought 6 new folders for $0.75 each and 15 pens that were priced at 5 for $1.45. What is the total amount she spent?
    5·1 answer
  • The original price of a pair of shoes is $36.00. Edward buys the shoes for 13% off its original price. Two weeks later Chad buys
    8·2 answers
  • Hello! Help me in my question.​
    8·2 answers
  • What is 2792 + 9383790202
    13·2 answers
  • In.
    14·1 answer
  • Please help me with this
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!