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3 years ago

X+3/x-2 - 1-x/x =17/4find the x with methods

Mathematics

2 answers:

Archy [21]3 years ago

7 0

Step-by-step explanation:

x+3/x-2 - 1-x/x= 17/4

now let's put the expression on the upper side so it I'll be

x+3-x-2-1-x-x= 17×14

x-x-x-x+3-2-1= 238

+3-3= 238

= 238 answer

Doss [256]3 years ago

6 0

Answer:

The solution set is {-2/9, 4).

Step-by-step explanation:

(x + 3)/(x-2) - (1-x)/x = 17/4

Multiply through by the LCD ( = 4x(x - 2):

(x + 3)4x - 4(1 - x)(x - 2) = 17x(x - 2)

4x^2 + 12x - 4(x - 2 - x^2 + 2x) - 17x^2 + 34x = 0

4x^2 + 12x - 4x + 8 + 4x^2 - 8x - 17x^2 + 34x = 0

-9x^2 + 34x + 8 = 0

We need 2 numbers whose product = -72 ( -9 * 8) and whose sum is 34.

These are +36 and -2, so we write:

-9x^2 + 36x - 2x + 8 = 0

-9x(x - 4) - 2(x - 4) = 0

(-9x + 2)(x - 4) = 0

x = -2/9, 4.

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3 years ago

On a particular day, the wind Added 4 miles per hour to Alfonso’s rate when he was cycling with the wing and subtracted 4 miles

Leona [35]

Answer:

Step-by-step explanation:

Alright, lets get started.

We first assume that Alfonso's bicycling speed with no wind is = x miles per hour

With the wind, his speed will be = $(x+4)$ miles per hour

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For traveling 54 miles with the wind, the time will be = $\frac{54}{(x+4)}$

For traveling 30 miles against the wind, the time will be = $\frac{30}{(x-4)}$

Alfonso found that both the timings are same, so

$\frac{54}{(x+4)}=\frac{30}{(x-4)}$

Cross multiplying

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Solving for x

$54x - 30 x = 120 + 216$

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Dividing 24 in both sides

$x = 14$

So, Alfonso's normal bicycling speed with no wind is 14 miles per hours. : Answer

Hope it will help :)

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3 years ago

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cestrela7 [59]

Answer:

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3 years ago

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3 years ago

X+3/x-2 - 1-x/x =17/4find the x with methods​

X+3/x-2 - 1-x/x =17/4find the x with methods