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monitta
3 years ago
7

Solve for x. 2/x^2−4 − 1/x+2=3/x−2 −32 −12 23 2

Mathematics
2 answers:
choli [55]3 years ago
6 0

Answer:

-\frac{1}{2}

Step-by-step explanation:

1. Multiply both sides of the equation by the LCM (x - 2)(x + 2):

\frac{2}{x^{2} -4} (x-2)(x+2)

factor x² - 4 by rewriting it as x² - 2²

x² - 2² = (x + 2)(x - 2)

now we have;

\frac{2}{(x+2)(x-2)} (x-2)(x+2)

cancel the common factors (x - 2)(x + 2)

= 2

-------------------------------

\frac{-1}{x+2} (x-2)(x+2)

cross cancel the common factor (x + 2)

\frac{-1}{x-2}=-(x-2)=-x+2

-------------------------------

\frac{3}{x-2} (x-2)(x+2)

cross cancel the common factor (x - 2)

3(x + 2)

distribute the 3

3x + 6

-------------------------------

combining all new values, we have;

2 + (-x) + 2 = 3x + 6

-x + 4 = 3x + 6

2. Isolate x:

-x + 4-4 = 3x + 6-4

-x = 3x + 2

-x-3x = 3x-3x + 2

-4x = 2

-4x/-4 = 2/-4

x = -\frac{1}{2}

hope this helps!

Alex Ar [27]3 years ago
4 0

Answer:

x = -1/2.

Step-by-step explanation:

x^2 - 4 = (x - 2)(x + 2)  so if we multiply each term by x^2 -4 we get:

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

2 - x + 2 = 3x + 6

2 + 2 - 6 = 3x + x

4x = -2

x = -1/2.

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It takes 45 minutes to drive to the nearest bowling alley taking city streets going 30 miles per hour
zmey [24]

Answer:

The time it will take to get to the bowling alley while driving at 65 mph on the freeway is approximately 20.8 minutes

Step-by-step explanation:

The given parameters are;

The time it takes through the streets to drive to the nearest bowling alley = 45 minutes

The speed of driving through the streets = 30 miles per hour (mph)

The speed of driving through the freeway to the bowling alley = 65 mph

From the speed of driving through the streets and the time taken we have;

The formula for speed, S, is S = Distance/Time

Therefore, 30 mph = Distance/45 minutes

Where, 1 hour = 60 minutes, 45 minutes = 1/60×45 hour = 3/4 hour

30 mph = Distance/45 minutes = Distance/(3/4 hour)

30 mph = Distance/(3/4 hour)

Distance = 30 mph × 3/4 hour = 22.5 miles

Given that the distance through the freeway and through the streets are the same, we have from speed = Distance/Time;

Time = Distance/Speed

The speed through the freeway = 65 mph while the distance remain 22.5 miles

Therefore;

Time = 22.5 miles/(65 mph) ≈ 0.346 hour ≈ 20.8 minutes

The time it will take to get to the bowling alley while driving at 65 mph on the freeway is approximately 20.8 minutes.

8 0
4 years ago
Which best explains how to graph this location on the coordinate plane ? -
emmainna [20.7K]
Sorry for being late but it’s go up 1 and right 9. ( you can remember this in the way that 1 is going up and 9 is going right, if it’s negative it would be -1 going down and -9 going left) hope this helps!
7 0
2 years ago
What’s the answer to these 2
inessss [21]

Answer:

b

Step-by-step explanation:

6 0
4 years ago
A watch sells for $65. This week, it's on sale for $42.25. What is the percent of the discount?
Virty [35]

Answer:

35% off

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4 0
3 years ago
Read 2 more answers
PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS OR WILL BE REPORTED
GarryVolchara [31]

Answer:

height is 15

Y = L = Length

therefore 15y = (-x^2) +(300/20)

Step-by-step explanation:

15 = -x^2 +(300/20)

is the same as;

15 = (300/20) - (x^2)

we just add y to 15 and that can represent a division for x

y = L

Where area cm^2 can be shown as 300 as 15 x 20 = 300

when we divide by length we get the height as asked in the question.

7 0
3 years ago
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