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x=1

e^(2x)=64

Solve for x over the real numbers:
e^(2 x) = 64

Take the natural logarithm of both sides:
2 x = log(64)

Divide both sides by 2:
Answer: |x = (log(64))/2=3 ln(2)

Divide both sides by 5, leaving x = 45.

Divide 45 by 5 and then write that as X.

it depends on the size.

2x2 is the same as 2+2 and the answer is four

Every one is wrong it is 16.6666666667

8.6

P(at least one boy)  = 

1 - P(no boys)  =

 ( .474 )^7  ≈  .00538  ≈  .538%

xy + 4x= 2880    →  x (y + 4)  = 2880 →  x = 2880/ (y + 4)    (1)

xy - 12y= 2160     (2)

Sub (1)  into (2)

[2880/ (y + 4)] y - 12y  = 2160    multiply through by ( y + 4)

2880y - 12y( y + 4) = 2160( y + 4)    simplify

2880y - 12y^2 - 48y = 2160y + 8640

12y^2 - 672 y  + 8640  = 0

y^2 - 56y + 720  = 0     factor

( y - 36) (y - 20)  = 0

Set each factor to 0 and y = 36  or y  = 20

When y  = 36,  x = 2880/[36 + 4]  = 2880/40 =  72

When y  = 20,  x = 2880/[20 + 4]  = 2880/24 =  120

Solutions    (72, 36)  and (120, 20 )

Solve the following system:
{3 h - 4 k = 5 | (equation 1)
5 h + 3 k = -11 | (equation 2)
Swap equation 1 with equation 2:
{5 h + 3 k = -11 | (equation 1)
3 h - 4 k = 5 | (equation 2)
Subtract 3/5 × (equation 1) from equation 2:
{5 h + 3 k = -11 | (equation 1)
0 h - (29 k)/5 = 58/5 | (equation 2)
Multiply equation 2 by 5/29:
{5 h + 3 k = -11 | (equation 1)
0 h - k = 2 | (equation 2)
Multiply equation 2 by -1:
{5 h + 3 k = -11 | (equation 1)
0 h+k = -2 | (equation 2)
Subtract 3 × (equation 2) from equation 1:
{5 h+0 k = -5 | (equation 1)
0 h+k = -2 | (equation 2)
Divide equation 1 by 5:
{h+0 k = -1 | (equation 1)
0 h+k = -2 | (equation 2)
Collect results:
Answer: |h = -1           and          k = -2

f(2)  = 6

how do you factor out y=-5x^2-8x+3

y = 1/5 (-5 x + sqrt(31) - 4) (5 x + sqrt(31) + 4)

because the person who created it hates us.

xy+4x=2880

xy-12y=2160

x = 72 and y = 36

x = 120 and y = 20

(-2, 6)

2/3 + 2/5 = 1 1/15 cans per day that the dogs eat.

24 / [1 1/15] =24 / [16/15] =24 x 15/16 =22 1/2 days - that 24 cans will last for the 2 dogs.

icup.

See i spelled it for you

your welcome

(It was a grammar joke. "your" is actually supposed to be "You're" ) 

This is the compound interest formula:

FV = PV x [1 + R]^N, where FV=Future value, PV=Present value, R=Interest rate per period, N=Number of periods. R and N must match. In other words, If R is per month, then N must be in months. If R is per year, then N must be the number of years......and so on.

The domain is all real numbers

The range is  [ -2, infinity  )

 xD

77 or seven randomly selected births?

O.o

Don't bring back my bad memories.