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Area = 12√48

Each boy had 56 coins.

a)  Jason       ($ 11.20)

b)    $ 5.60                 ( $16.80 - $11.20 )

c)    Keith had 40 twenty-cent coins at first.

b = banana bags                  amount = 9 b

a = apple bags = 6-b             amount = 8 (6-b)             summed , the amounts = 51

9b        +     8(6-b)   = 51         solve for b    then   a = 6-b

t = 2/3 e      or    e = 3/2 t

t+8 = 4/5 (e-5 )        sub in the red equation

t + 8 = 4/5 (3/2 t-5)     solve for t

don't repost. https://web2.0calc.com/questions/geometry_23400 is where the question is

I wrote a computer program and got 80 triples:

for (a = 1..5)

for (b = 1..5)

for (c = 1..5)

  if a^2*b + b^2*c + c^2*a - a*b^2 - b*c^2 - c*a^2 = 0

    count = count + 1

output(count)

output = 80

Selection B specifically the street and the number on the house.  Who doesn't have a GPS on their smart phone?    

It's one thing to be able to draw it, and it's another to prove it using words :)

Excellent 

Pete's speed is x, and Pam's speed got to be 2x.

3x is 18 hours

So 2x is 27 hours and x is 54 hours.

Which mean Pete takes 54 hours working alone and Pam takes 27 hours working alone.

Well.

either x+5=12

or  x+5=-12

now you work it out

cos(sin^(-1)(-(1)/(2)))+tan^(-1)(cos(\pi ))

\(cos(asin\frac{-1}{2})+atan(cos(\pi ))\\ =cos(2\pi-\frac{\pi}{6})+atan(-1)\\ =cos(\frac{\pi}{6})+\frac{-\pi}{4}\\ =\frac{\sqrt3}{2}-\frac{\pi}{4}\\ =\frac{2\sqrt3-\pi}{4}\\\)

16 000 (1 + .08/4)²   = amount

interest = amount - 16000

Answer B

6.4 cm * 50 000 = 320 000 cm   = 3.2 km

cos pi = -1

tan^-1 (-1) =  135 degrees

sin^-1/2  (-1/2) =   -30      or     210   degrees       

The , remember this identity:   cos(α+β)=cosαcosβ−sinαsinβ       and apply it to the following:

cos ( -30   + 135)                         cos ( 210 + 135)

x = adult tix

3x = student tix         summed , they equal 472

x + 3x = 472      solve for 'x'

Ok, I have answered it.   

Here is the pic I used

I started with vanilla and let the number be x and then I worked up from there.

We are told that 3x=x+120

so solve that and you can work it out from there.

One of them does work.

awsome ty :D 

As follows:

"Find the minimum value of  2x^2 + 2xy + y^2 - 2x + 12y + 4  over all real numbers x and y."

Right.