All categories

3 years ago

7/2x+1 + 4/4x+2, x≠-1/2

Mathematics

1 answer:

ivann1987 [24]3 years ago

8 0

Step-by-step explanation:

$\frac{7}{2x + 1} + \frac{4}{4x + 2}$

$=\frac{7(4x + 2) + 4(2x + 1)}{(2x + 1)(4x + 2)}$

$= \frac{28x + 14 + 8x + 4}{(2x + 1)(4x + 2)}$

$=\frac{36x + 18}{(2x + 1)(4x + 2)}$

$=\frac{9(4x + 2)}{(2x + 1)(4x + 2)}$

$=\frac{9}{2x + 1}$

You might be interested in

Write the quadratic equation whose roots are 4 and 5, and whose leading coefficient is 4.

Umnica [9.8K]

Answer:

Answer: 4x² - 9x + 20 

Step-by-step explanation:

• General quadratic equation:

${ \rm{ {x}^{2} - (sum \: of \: roots)x + (product \: of \: roots) }}$

• sum of roots → 4 + 5 = 9

• product of roots → 4 × 5 = 20

• substitute:

${ \boxed{ \rm{4 {x}^{2} - 9x + 20 }}}$

3 0

3 years ago

Plz help me

Iteru [2.4K]

Answer:

I think the answer is 60 feet.

Step-by-step explanation:

Because his rate is 2 feet per second and the question asks where he'll be after 30 seconds, the answer has to be 60 feet.

I hope this helps!

5 0

3 years ago

Solve the following system by graphing.

Masja [62]

Hello :
the solution is : (3, -1)
put x= 3 and y = -1
you have : 3-(-1) = 4 and 3+(-1) = 2 ..... right

7 0

3 years ago

Read 2 more answers

1.Find the area of a circle with the radius of 48mm

OLga [1]

Answer:

hope it helps you see the attachment for further information....

3 0

3 years ago

How to factor out 7x^6

Nataly_w [17]

Answer:

Step-by-step explanation:

so you do 7 times 6 and you should get 42

8 0

3 years ago