Calculus

If done to both sides of an equation you can do just about anything

1/5(5X = 20)1/5

X = 4

-------------works here!

8x - 23= 3x + 2

+23 +23

8x=3x + 25

-3x -3x

5x=25

x=5

the answer is X=5

Yes. It is scientific notation. If written in standard form it would have an 11 followed by 212 zeros.

50003

Fourth root of pi, or 3.141592654 0.25 = 1.33133

I know the answer

*is arctan(x), but how about breaking it into partial fractions by doing 1/(1-ix)(1+ix)?

x2 - 8x - 40 = 0

∴ x2 - 8x = 40

∴ x2 - 8x + 16 = 56

∴ (x - 4)2 = 56

∴ x - 4 = ± 561/2

∴ x = 4 ± 561/2

∴ x = 4 ± 2 × 141/2

∴ x ≈ {11.4833, -3.4833}

100

14400

Prime numbers, like 7, have no proper factors. The only factors are 1 and 7.

360˚

How do you not know this?

y = 3.

y^3 - y = y(y^2-1) = y(y+1)(y-1) = 3*4*2 = 24.

I apologize, for the person who first answered this question is only aware of his own skills at math, and is unaware that not everyone understands very advanced math, but he is correct, that is the answer.

The two rational solutions are (0,0,0) and (1,1,1). There are no other real solutions.

0.62*0.75 = 0.465

The solution is:- x = 0 and y = 5

9

y=4x+35

slope=4

x-intercept = (-35/4,0)

y-intercept = (0,35)

-2

It can't actually be eliminated, although you could re-express the equation in a way that no longer uses a power of two:

y2 = x

(y2)1/2 = x1/2

y = x1/2

If you don't want to write it with an exponent at all, you can also express it using a radical:

y = √x

But note that you're not actually eliminating the exponent. You're actually just re-expressing it in a slightly different notation.

3

A function is a mapping from a set D to a set Cwhere each element of D is mapped to one (and only one) element of C. D and C are the domain and codomain (range) of the function, and they need not be distinct.

The expected outcome of D and X is the termination of a pregnancy with removal of a dead fetus from the woman's body.

5x

That's all you can get from that.

If you need to solve for x you are missing part of the question

Yes. If x is positive then -x < x