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2 years ago

I do not remember how to solve this can you help me

Mathematics

1 answer:

monitta2 years ago

4 0

-X+7x-3=0
-7(+-)√(7)^2--4(-1)(#)
(2)(#)
pass me all the picture to can help you

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Approximately 3.24 billion gallons of water flow over niagra falls daily. concrete or discrete?

Naddika [18.5K]

I think it is concrete.

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2 years ago

What is the relationship between a cylinder and a sphere with the same base area and perpendicular height?

grin007 [14]

Answer:

For a sphere, the height is equal to the diameter, or two times the radius.

and because both objects have the same base area, then we can take the radius of the sphere equal to R and the radius of the base of the cylinder also equal to R.

The volume of the cylinder is:

Vc = pi*r^2*h

and here we have r = R and h = 2R

V = pi*(R^3)*2

the volume of a sphere of radius R is:

Vs = (4/3)*pi*R^3

The quotient between them is:

Vc/Vs = 2/(4/3) = 6/4 = 3/2.

This means that the volume of the cylinder is 3/2 times the volume of the sphere, always, for any value of R.

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2 years ago

The difference between the roots of the quadratic equation x^2−14x+q=0 is 6. Find q.

pychu [463]

Answer :

The value of q for, the given quadratic equation is 40

Step-by-step explanation :

Given quadratic equation as :

x² - 14 x + q = 0

And , Difference between the roots of equation is 6

Let A , B be the roots of the equation

So, A - B = 6

The roots of the quadratic equation ax² + bx + c = 0 as can be find as :

x = $\frac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}$

x = $\frac{14\pm \sqrt{(-14)^{2}-4\times 1\times q}}{2\times 1}$

or, x = $\frac{-14\pm \sqrt{196-4 q}}{2}$

Or, x = $\frac{-14\pm \sqrt{196-4 q}}{2}$

So , The roots are

A = $-7 + \frac{\sqrt{196-4q}}{2}$

And B = $-7 - \frac{\sqrt{196-4q}}{2}$

∵ The difference between the roots is 6

So, A - B = 6

Or, ( $-7 + \frac{\sqrt{196-4q}}{2}$ ) - ( $-7 - \frac{\sqrt{196-4q}}{2}$ ) = 6

Or, ( - 7 + 7 ) + 2 ( $\sqrt{196-4q}$ = 6

Or, 0 + 2 ( $\sqrt{196-4q}$ = 6

∴ 196 - 4 q = 36

or, 4 q = 196 - 36

or 4 q = 160

∴ q = $\frac{160}{4}$

I.e q = 40

S0, The value of q = 40

Hence The value of q for, the given quadratic equation is 40 . Answer

8 0

2 years ago

What is the value of x/2 + 4 when x = 6?

Anna35 [415]

Step-by-step explanation:

solution:

here,

x/2+4

= 6/2+4 ( x = 6 )

= 3+4

= 7

4 0

1 year ago

Read 2 more answers

Anybody know the answer to this

aalyn [17]

X is 19.96588 (25sin(53)) and Y is 15.04537 (25sin(37))

8 0

2 years ago