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
Rus_ich [418]
3 years ago
14

Need answer to question 19 please !!

Mathematics
1 answer:
grigory [225]3 years ago
4 0

Answer:

<u>(1/3)</u> / (x+1) + <u>(-1/3)</u> / (x+4)

Step-by-step explanation:

1 / (x+1)(x+4) = (A/x+1) + (B/x+4)

1 =  ((A/x+1) + (B/x+4)) * (x+1)(x+4)

1 = A*(x+4) + B*(x+1)

* if x = -4

1 = A*(-4+4) + B*(-4+1)

1 = B*(-3)

B = -1/3

** if x = -1

1 = A*(-1+4) + B*(-1+1)

1 = A*(3)

A = 1/3

check: (1/3)/(x+1) + (-1/3)/(x+4) = ((1/3)*(x+4))/((x+1)(x+4)) + ((-1/3)*(x+1))/((x+1)(x+4))

==> ((1/3x + 4/3)+(-1/3x - 1/3)) / ((x+1)(x+4)) = 1 / (x+1)(x+4)

You might be interested in
Simplify 18 1/2 + (-7 4/8)<br> ASAP pls
poizon [28]

Answer:

11

Step-by-step explanation:

18 1/2 + (-7 4/8)

Simplify the fraction

18 1/2 + (-7 1/2)

Subtract the whole numbers

18-7 = 11

Subtract the fractions

1/2 -1/2 =0

6 0
3 years ago
Read 2 more answers
Solve through substitution<br><br> –3x–8y=20<br><br> y=5x+19<br><br> Point of intersection, please
Sedaia [141]

Answer:

(-4, -1)

Step-by-step explanation:

-3x - 8y = 20; y = 5x + 19

y = 5x + 19; -3x - 8y = 20

y = 5x + 19

-3x - 8y = 20

-3x - 8(5x + 19) = 20

-43x - 152 = 20

-43x - 152 + 152 = 20 + 152

-43x = 172

-43x / -43 = 172 / -43

x = -4

y = 5x + 19

y = (5)(-4) + 19

y = -1

4 0
3 years ago
25 = 150 * (0.997)^t<br><br> solve without using logs
V125BC [204]

Answer:

hi hi hi hi hi

Step-by-step ms. Hi hi hi hi

5 0
3 years ago
PLEASE HELP. are the values of the expressions 2m−13 and m+3 equal?
Nastasia [14]

Answer:

yes

Step-by-step explanation:

m=16

7 0
4 years ago
Read 2 more answers
Round 54,548 to the nearest ten thousands
andrey2020 [161]

50,000 answerrrrrrrrrrrrrrr


5 0
3 years ago
Read 2 more answers
Other questions:
  • 118.380 rounded to the nearest hundredth
    14·2 answers
  • A taxi ride costs $32. Paulie gives the
    10·1 answer
  • The shaded triangle is set inside a pentagon. What type of triangle is the shaded triangle?
    8·2 answers
  • 218,457 to the nearest hundred thousands
    14·1 answer
  • 3y + 6x + 2x + 7y <br> simply the given expression
    11·1 answer
  • Harold is designing a patio with congruent square concrete tiles. He has 72 tiles. Use grid paper to model all the possible rect
    5·1 answer
  • Melanie buys 2 goldfish per month. How many goldfish will she have after a year?
    6·1 answer
  • A bus travels 324 km in 8 hours. How long will it take to travel 243 km ?​
    9·2 answers
  • Simplify the expression below. −7×4×(−434)
    15·2 answers
  • What is the slope of the line that passes through the points
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!