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Yuki888 [10]
3 years ago
10

More and more and more

Mathematics
1 answer:
Ad libitum [116K]3 years ago
7 0

The denominators are the same, which means that you can add the numerators.

(-2x - 9) + (7x + 1) = 7x - 2x - 9 + 1 = 5x - 8

Remember to add the denominator to your answer

(5x - 8)/(y² + 7) is your answer

hope this helps

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Solve the equation a/a^2-9 +3/a-3=1/a+3
MAXImum [283]
Answer is: a= -4
STEP
1
:

1
Simplify —————
a + 3
Equation at the end of step
1
:

a 3 1
(————————+—————)-——— = 0
((a2)-9) (a-3) a+3
STEP
2
:

3
Simplify —————
a - 3
Equation at the end of step
2
:

a 3 1
(————————+———)-——— = 0
((a2)-9) a-3 a+3
STEP
3
:

a
Simplify ——————
a2 - 9
Equation at the end of step
3
:

a 3 1
(————————————————— + —————) - ————— = 0
(a + 3) • (a - 3) a - 3 a + 3

Equation at the end of step
4
:

(4a + 9) 1
————————————————— - ————— = 0
(a + 3) • (a - 3) a + 3
Pull out like factors :

3a + 12 = 3 • (a + 4)

Equation at the end of step
6
:

3 • (a + 4)
————————————————— = 0
(a + 3) • (a - 3)

3•(a+4)
——————————— • (a+3)•(a-3) = 0 • (a+3)•(a-3)
(a+3)•(a-3)

a+4 = 0

Subtract 4 from both sides of the equation :
a = -4
7 0
2 years ago
What is the value of f(3) in the function below?
Pani-rosa [81]

Answer:

B.3/2

Step-by-step explanation:

6 0
3 years ago
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What is the sum of 90 minutes and 50 minutes? 130 minutes 1 hour, 40 minutes 2 hours 2 hours, 20 minutes
LiRa [457]
90 mins + 50 mins = 140 mins 
60 mins ==1 hr  2*60 = 120 mins 
140 mins -120 mins= 20 mins
2 hrs ans 20 mins is the answer
7 0
3 years ago
Read 2 more answers
In how many ways can Kame listen to four CD’s assuming he listens to each CD once?
fiasKO [112]
At most she can listen to her music in 16 different ways. 
7 0
3 years ago
I need help and steps of how u got it
Gnom [1K]

Answer:

A)  4

Step-by-step explanation:

There are a couple of ways to get this but this is how I did it:

1.  Multiply the second equation by 1/4 to get the same fraction for y as the one in the first equation

1/4 x + 1/8 y = 2

1/4 (1/3 x + 1/2 y = 4)

1/12 x + 1/8 y = 1

2.  Subtract the first equation from the new equation

    1/12 x + 1/8 y = 1

<u>    - 1/4 x - 1/8 y = -2</u>

-1/6 x= -1

3.  Divide both sides by -1/6

  <u>-1/6</u> x= <u>-1</u>

   -1/6    -1/6

     x = 6

4. Substitute 4 in for x in the original equation:

1/4 (6) + 1/8y = 2

6/4 + 1/8y = 2

1/8y = 1/2

  y = 4

3 0
3 years ago
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