Calculus

Yes.

-5x2 + 5x + 60 = 0

Remove the common factor of 5

-x2 + x + 12 = 0

Where the coefficient of x2 is negative, it is best to make it positive by multiplying throughout by -1

x2 - x - 12 = 0

The above equation will factorise.

(x - 4)(x + 3) = 0 ; therefore x - 4 = 0 when x = 4, or x + 3 = 0 when x = -3

The solutions (roots) of this equation are x = 4 and x = -3.

55

-21

Plug in numbers. If you don't know which numbers to plug in, solve the equation for y to give you a better idea. It ends up being y=(-x/3) - 2

by 4. You do this because you want to find out what x equals. If you divide by 16, you find out what 1/4X equals, and that isn't much good to you. x=4 is the answer.

8

3 mm is 0.3 centimetres.

y = 4x -2.5

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The slope has to be the same as the two original equations, in this case 4. This way the lines are parallel. And the y-intercept has to lie between the two original equations (0,1) & (0,-5) on the y-axis.

Some of these points include:

(0,0) y=4x

(0,-1) y=4x-1

(0,-2) y=4x-2

(0,-3) y=4x-3

(0,-4) y=4x-4

...and so on for any point in between, including (0, -2.5) as the previous poster listed.

An equation is composed of mathematical statements, which can be arranged to result in a series of equations/inequalities which can be solved for each unknown.

6x

X is a variable. So you subtract 7 minus 2 to find the variable answer.So your answer is 5

x = 5

3z2 + 45z + 42 = 3(z2 + 15z + 14)

= 3(z + 1)(z + 14).

This statement is false.

x=2,-6

x^2+4x-12

(x^2-2x)(+6x-12)

x(x-2)+6(x-2)

(x-2)(x+6)=0

A 10 x 10 grid would contain 100 cells.

If: x-y = -2 then the x intercept is -2 and the y intercept is 2

So the points are: (-2, 0) and (0, 2)

A set is a collection of number, letters or things denoted as {things}. for ex. {2,5,6} meaning that x is either 2, 5 or 6.

A = {1,4,5} U {1,2, 3} means A = {1,4,5,2,3} while

B = {1,2,3} ∩ {5, 2, 3} means B = { 2, 3}

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Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals", "squared", "cubed" etc.

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None of the folloing - following even!

That would be 7/8 (seven-eighths) of 360 degrees, which would be 315 degrees. Hope this helps!

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There are no equations in the question, simply a couple of expressions.