Calculus

Subtract 4 from both sides and add y to both sides. This would give you 2y=14.

Then, divide both sides by 2. y=7.

52,560,000

The way you can get that number is simple:

10 x 0.10 = 1

1 x 60 = 60

60 x 24 = 1,440

1440 x 365 = 525,600

525,600 x 100 = 52,560,000

You see, you start out by multiplying the number of numbers you can count every 10 seconds, you multiple that number by the number of minutes in a hour, you multiple that number by the number of hours in a day, you multiple that number by the number of days in a year, and you multiple that number by 100 years.

So, if you constantly counted by 1 every 1 second, for 100 years, the number you would end up with is 52 billion, 560 hundred thousand.

-31

if, for example, 0=x^2+5x+6, then:

0=(x+3)(x+2)

the numbers '3' and '2' must add to give you 5, and multiply to give you 6.

SO:

0=x^2+(a+b)x+(ab)x

0=(x+a)(x+b)

13.935

The step-work involved in proving this would be too long and detailed to show here, but the end result is this:

We're given three verticies, defined by the points (x1, y1), (x2, y2), and (x3, y3). We want to use them to define a parabola in this format:

f(x) = ax2 + bx + c

We can find our a, b and c coefficients with the following equations:

a = [y1(x2 - x3) + y2(x3 - x1) + y3(x1 - x2)] / [x12(x2 - x3) + x22(x3 - x1) + x32(x1 - x2)]

b = (y1 - y2) / (x1 - x2) - a(x1 + x2)

c = y1 - a(x12) - b(x1)

=-2

15

0

7

I ddont't know, ddo you for a b c?

You can write "equals".

It would be perfectly fine to say "2 + 2 equals 4".

It's jsut that, it's much more common to use "=", just because it's easier probably.

W+5y

5361.66

no

1/3 - 2/(2y + 1) = 3/y

Provided that y ≠ -1/2 and y ≠ 0,

multiply through by 3y(2y+1) to give

y(2y + 1) - 6y = 9(2y+1)

that is, 2y2 + y - 6y = 18y + 9

or 2y2 - 23y - 9 = 0

The quadratic formula then gives y = [23 ± sqrt{232 - 4*2*(-9)}]/(2*2)

= [23 ± sqrt(601)]/4

so that y = -0.3788 or y = 11.8788

17-2=15

15/5=3

x=3

Two numbers multiplied together produce a number. A number is neither strong nor weak.

( -3x + 211 ) is not an equation, so it doesn't have a 'solution'. It's not asking

a question, so it doesn't need an answer.

It's just an expression that stands for a number, and there's no way to tell

what number it stands for until you find out what number 'x' is .

If 'x' is 5, then the expression stands for the number 196 .

If 'x' is 17, then the expression stands for 160 .

If 'x' is 55, then the expression stands for 46 .

If 'x' is something else, then the expression stands for some other number.

I'm guessing you meant to say x2 -20x +100. This equation is in ax2+bx+c=0 (1 is the "a" term, -20 is the "b" term, and 100 is the "c" term. You have to think to yourself, what factors of the "c" term (100) will add to the "b" term (-20) These factors are -10 and -10 because when you add these two terms you get -20 and when you multiply these two terms you get 100. Now your equations should read like this: (x-10)(x-10) = 0 . then you have to get x by itself by adding 10 to both sides. Thus, 10 is your factor.

Without an equality sign it is not an equation

0

±518.60775