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Airida [17]
3 years ago
8

Solve for x.

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

\boxed{x=5},x=-9

Step-by-step explanation:

To rid the denominators, multiply both sides by (x-3)(x+1).

We get:

6(x+1)-12(x-3)=(x-3)(x+1)

Simplifying, we have:

6x+6-12x+36=x^2-3x+x-3,\\-6x+42=x^2-2x-3,\\x^2+4x-45=0

Solving, we get:

x^2+4x-45=0,\\(x-5)(x+9)=0,\\x=5,x=-9

Therefore, the solution with the greatest value is x=\boxed{5}

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A rocket is launched from a tower. the height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
GaryK [48]

Answer: 10.17\ seconds

Step-by-step explanation:

Given the following Quadratic equation:

y=-16x^2+153x+98

The steps to solve it are:

1. Substitute y=0 into the equation:

0=-16x^2+153x+98

2. Use the Quadratic formula x=\frac{-b\±\sqrt{b^2-4ac}}{2a}.

In this case:

a=-16\\b=153\\c=98

Substituting values into the Quadratic equation, you get (Round the values to the nearest hundreth):

x=\frac{-153\±\sqrt{153^2-4(-16)(98)}}{2(-16)}\\\\x_1=10.17\\x_2=-0.60

3. The positive value is the time that the rocket will hit the ground.

Therefore, the rocket will hit the ground after 10.17\ seconds.

7 0
3 years ago
6. Courtney bought a shirt for $24 with a
7nadin3 [17]

let the original price be x.

then,

x- 25% of x= 24

x- 25x/100 = 24

x-   x/4=24

3x/4=24

3x= 96

x= 32

in short...the original price= 32 dollars

8 0
3 years ago
The volume of a cube is 441cm3.<br> Work out the length of its side rounded to 1 DP.
Rainbow [258]

Answer:

volume of cube=441cm³

l³=441cm³

l=

\sqrt[3]{441}

length=7.6cm

3 0
3 years ago
Which is a better buy? 5000 sqft of lawn food for $11.99 or 12500 sqft of lawn food for $19.99? Show proof.
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3 0
3 years ago
Problems this is so hard so help
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6 0
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