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Charra [1.4K]
3 years ago
10

What are the solutions of the quadratic equation?

Mathematics
2 answers:
Cloud [144]3 years ago
8 0
We have x^2 + 2 · x · (11/2) + (11/2)^2  = - 24 + (11/2)^2;
Then, ( x + 11/2 )^2 = -24 + 121/4;
( x + 11/2 )^2 + 96/4 - 121/4 = 0;
( x + 11/2 )^2 - 25 / 4 = 0;
( x + 11/2 )^2 - (5/2)^2 = 0;
( x + 11/2 - 5/2)·( x + 11/2 + 5/2 ) = 0;
( x + 6/2 )·( x + 16/2 ) = 0;
( x + 3 )· ( x + 8 ) = 0;
x = - 3 or x = -8;
The first choice is the correct answer.
sineoko [7]3 years ago
3 0
Original equation:  
x^2 + 11x = -24 
 Move everything to the left hand side of the equation. To do this, add 24 to each side.
 x^2 + 11x + 24 = 0 
 Now figure out a combination of two numbers that when added equals 11 but when multiplied equals 24. The answer is 8 and 3. 
 (x + 8)(x + 3) = 0 
 You can check the result by doing FOIL.
 There are two values for which the equation works: x = -8 and x = -3.
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The force F of gravity on a rocket varies directly with its mass m and inversely with the square of its distance d from Earth. W
xz_007 [3.2K]

Model for the Combined variation  is  F = \frac{km}{d^{2} }

Equation to find the mass of the rocket in terms of F and d is :

m=\frac{F d^{2} }{k}

<h3>What is Force ?</h3>

A force is the quantity that change the motion of the object. Force is that influence which can cause any object having some mass, to change it's position or to accelerate from it's original position.

Force (F) and mass (m) of any object are  directly proportional to each other. More the mass of the object , more the force will require to accelerate it.

Mathematically, we can write the equation of force as :

F = m . a

where , m = mass of the object

             a = constant value

In the statement given,

As, force of gravity varies directly with its mass

Therefore, F= k m , where k is a constant

Also force is inversely varies with square of distance d

Thus, F = k / d²

Combining both equations :

F = \frac{km}{d^{2} }  

and the equation of mass in terms of F and d can be written as :

m=\frac{F d^{2} }{k}

To know more about Force and it's equation, visit :

brainly.com/question/14857727

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7 0
1 year ago
Joe has ​$800 to spend on a new dining room table and chairs. If the sales tax is 8%​, how much can he afford to spend on the ta
Lorico [155]

Answer:

no

Step-by-step explanation:

800x8%=64

64+800=864

4 0
3 years ago
Read 2 more answers
A plane has 360 total seats, which are divided into economy class and business class. For every 13 seats in economy class, there
9966 [12]
Make an equation system based on the problem
<span>An equation for "A plane has 360 total seats, </span>which are divided into economy class and business class" is
∴ e + b = 360   (first equation)
"<span>For every 13 seats in economy class, there are 5seats in business class" that means in 1b there is (5/13) e
</span>∴ b= \frac{5}{13} e    (second equation)
<span>
Solve the equation, find the value of e
</span><span>Subtitute b with (5e)/13 in the first equation
</span>e + b = 360
e + \frac{5e}{13} = 360
Equalize the denominators
\frac{13e}{13} + \frac{5e}{13} =360
\frac{18e}{13}=360

move 13 to the right side, and solve for e
\frac{18e}{13}=360
18e = 360 × 13
18e = 4,680
e = 4,680/18
e = 260

Find the value of b
e + b = 360
260 + b = 360
b = 360 - 260
b = 100

There are 260 seats in economy class and 100 seats in business class
6 0
3 years ago
HELP A STRUGGLING FRIEND OUT
spayn [35]

Answer:b

Step-by-step explanation:

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3 years ago
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What makes a unit rate a unit cost?
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You only have so much time to pay it ???
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