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Wewaii [24]
3 years ago
13

Can you solve (4x-3)/(x+2)+(15)/(x-3)

Mathematics
2 answers:
Murljashka [212]3 years ago
8 0
Please see the pic, I'd solved in it.

Andrews [41]3 years ago
3 0
\frac{4x-3}{x+2} + \frac{15}{x-3} = 0
1st step: We need to have a common denominator.
So we do this:
\frac{(4x-3)*(x-3)}{(x+2)*(x-3)} + \frac{(15)*(x+2)}{(x-3)*(x+2)} = 0
2nd step: Distribute them
\frac{4x^{2}-3x-12x+9}{(x-3)(x+2)} + \frac{15x+30}{(x+2)(x-3)} = 0
3rd step: Do the rest of the equation!
We can put it on one fraction, its fine.
\frac{4x^2-15x+9+15x+30}{(x+2)(x-3)} = 0
\frac{4x^2+39}{(x+2)(x-3)} = 0 (-15 and 15 cancels out)
4th step: take the denominator to the other side
4x²+39 = 0 (anything × 0 = 0)
5th step: Take 39 to the other side
4x² = -39
6th step: Divide by 4 on both sides
\frac{4x^2}{4} = -\frac{39}{4}
(4 and 4 cancels out)
x² = -\frac{39}{4}
7th step: Take the square root to keep x alone
x = -\sqrt\frac{39}{4}
It can also be written as:
x = -\frac{ \sqrt{39} }{ \sqrt{4} }
Final answer:
x = -\frac{ \sqrt{39} }{2}
You might be interested in
Pls help! Show all work. Will reward the brainiest for da best answer.
BaLLatris [955]

Answer:

1. 56.52 inches

2. 141,300 inches

Step-by-step explanation:

One turn of the tire is the circumference. Therefore, we have to find the circumference first. C = πd = 18π = 18 × 3.14 = 56.52 in

2500 rotations would be 2500 ⋅ 56.52 in = 141,300 in

I hope this helps and please mark me as brainliest!

4 0
2 years ago
Hey can you help me out (:
rusak2 [61]

Answer:

7

Step-by-step explanation:

first, plug in 3 for x:

7^2 / 3^2 - 2

then simplify:

49 / 9 - 2

49 / 7

7

7 0
3 years ago
See attachment to help.
GenaCL600 [577]
B.
because {1,1,3,5,8}
{2,2,4,6,9}

you're just counting the numbers after the one that was given to you.
3 0
3 years ago
How much simple interest is earned on $6,000 at an interest rate of 4.52% in 4 1/2 years?
Mama L [17]

Answer:

1220.4

Step-by-step explanation:

S.I.=P×R×T÷100

=6000×4.52×4  1/2÷100

=6000×4.52×9÷2×100

=60×4.52×9÷2

=30×4.52×9

=1220.4

4 0
3 years ago
If two mammoths take seven hours to walk eleven kilometres, how long would it take five mammoths to walk twenty two kilometres a
kati45 [8]
This is a funny one. teachers do this to try to confuse you with the numbers. first you need to find out what is important in the question.

2 mammoths, 7 hours, 11 kilometers.
&
5 mammoths, ? hours, 22kilometers.

the amount of mammoths do not matter, because each walk the same speed.

so you only need to look at this.

7 hours to go 11 kilometers
&
? hours to go 22 kilometers

fast answer is. it's twice the distance so it will take twice as long. 14 hours.

solve answer.

7×60min = 420min
420min ÷ 11 kilometers = 38.18181818min per 1 kilometer.

38.18181818 • 22 = 839.999999min round up 840.

840min ÷ 60min = 14 hours
5 0
4 years ago
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