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People do all complex thought in their own langugage so it stands to reason that a deaf person would think in sign language or possible sometimes in lip reading.  I mean they would think in the same visual language as they use when they communicate with others.

but your profile picture.....

Actually, one year does not equal 365 days but instead equals 365.25 days.

1573

49/2, 24.5

Distribute and combine like terms

5x² - 2x - 9 = 50

Subtract 50

5x² -9x - 59 = 0

Use quadratic formula

x = 4.45, -2.65

126

650,000/2 = 325,000 minutes

325,000/60 ≈ 5416.66666... hours

5416.666.../24 ≈ 225.69444444... days.

225.6944444.../365 ≈ 0.618 year.

-2³ + 2³ = 0

Before we begin, some facts I googled:

The radius of the Earth is about 4000 miles

The circumference of the Earth is about 25000 miles

The formula to calculate circumference is 2 * pi * radius

Now, there isn't a single answer for your question because it depends on how far you walk. We'll let f represent how far your feet move and h how far your head moves. Given f and the circumference of the Earth, the angle (a) that you walked can be calculated by f/a = 25000/360 (There are 360 degrees in a circle, if you walked half the circumference of the Earth the angle would be 180). Solved for a you get a = f * 0.0144. The equation that your head moved (h) is h/a = 25158/360 (We got 25158 by having the circumference of the circle that you head moved as 4006 (Earth's plus the height of the man) * 2 * pi (the formula for circumference). solved for h you get h = a * 69.88. We already solve for a (a = f * 0.0144), substituting this in and simplifying we get our formula: h = f * 1.006

The exponent applies to the numerator and denominator separately. (1/2)² = 1²/2² = 1/4. For negative exponents, the numerator becomes the denominator and vice versa. (1/2)^-2 = 2²/1² = 4/1 = 4. Anything raised to the power of 0 is one. For fractional exponents, take the denominator root and raise that to the numerator. (1/2)^1/2 = square root of 1/2 raised to the power of 1. (1/2)^4/7 = seventh root of 1/2 raised to the fourth.

28.375

an eighth is always .125

More than you.

3(a-b)-a+b

first, distribute (because of PEMDAS, multiplication comes before addition and subtraction [you can't do anything inside of the parentheses])

3a-3b-a+b

then, combine like terms

3a-a-3b+b

2a-2b

Simplify

2(a-b)

I'm not sure what you're asking, but sin(30)=0.5

Your account will have a total of =$456,492.67 in 25 years from now. This is the formula you use to calculate this: FV=P{[1 + R]^N - 1/ R}=FV OF $1 PER PERIOD, Where R=Interest rate per period, N=number of periods, P=periodic payment, FV=Future value.

As many as there are sombreros!!

You have to know both r and n to use the calculator. Example: (1 + 0.05)^-60 =1.05^-60 =0.0535355..

Solve for x over the real numbers:
(2/3)^(2 x-1) = (9/4)^(3 x+2)

Take the natural logarithm of both sides and use the identity log(a^b) = b log(a):
-log(3/2) (2 x-1) = log(9/4) (3 x+2)

Expand out terms of the left hand side:
log(3/2)-2 log(3/2) x = log(9/4) (3 x+2)

Expand out terms of the right hand side:
log(3/2)-2 log(3/2) x = 3 log(9/4) x+2 log(9/4)

Subtract 3 x log(9/4)+log(3/2) from both sides:
(-2 log(3/2)-3 log(9/4)) x = 2 log(9/4)-log(3/2)

Divide both sides by -2 log(3/2)-3 log(9/4):
Answer: |x = (log(3/2)-2 log(9/4))/(2 log(3/2)+3 log(9/4)) = - 3/8

Press "2nd" key first, then use "atan", which is the inverse tan.

Solve the following system:
{x+y = 500 | (equation 1)
x/100+y/80 = 11/2 | (equation 2)
Subtract 1/100 × (equation 1) from equation 2:
{x+y = 500 | (equation 1)
0 x+y/400 = 1/2 | (equation 2)
Multiply equation 2 by 400:
{x+y = 500 | (equation 1)
0 x+y = 200 | (equation 2)
Subtract equation 2 from equation 1:
{x+0 y = 300 | (equation 1)
0 x+y = 200 | (equation 2)
Collect results:
Answer: |x = 300        and          y=200

Well, that isn't enough information to do anything with. I'm going to assume that there's a circle and that you are given a circumference.

formula for circumference:

C = 2πr

We can rearrange it to solve for the radius in terms of the circumference (by dividing both sides by 2π):

r = C / (2π)

And if you're using 3.14 for pi, then you would obviously substitute that in:

r = C / 6.28

They might have given you the area of the circle instead of the circumference.

formula for area of a circle:

A = πr²

Same thing as before; rearrange the equation, solving for r.

r² = A / π

r = sqrt(A / π)

2x*x=12

x*x=x², so 2*x*x=2x²

2x²=12

x²=6

x=sqrt6