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Answer: 

( from Quadratic Formula)

𝑥=23/2±Sqrt (341) / 2   You can do the rest    

Thanks for helping me! But the answer you gave me is not correct.

Yay thanks a lot!

You need the point that is  2/(2+3)= 2/5ths from a to b

x  from -9 to 1   Is  +10 units     2/5 * 10 added to -9 = -5

y  from 7 to -3 is -10 units   2/5 * -10 added to 7 = 3

We do:

1*3/4*2/4*1/4

=6/64

=3/32

I did not.

Dos that mean that i have to find another question?

This is how you do it:

You see that the 4 triangles added together is 5-4=1

So the area or one traingle is 1/4=b*h/2 (in this case it is a and b), so a*b=1/4*2=1/2.

1  *   3/4   *   2/4    *   1/4 =.......

QOR= 61-22

ROS= 58-QOR

175 x    +     250 (3-x) =  200 (3)      Solve for 'x'   , the pounds of 175 peanuts

The answer is 1/2.

Try values from each set 

Note that 3780=2^2*3^3*5*7. In order for a divisor to be a multiple of 3, we need at least one 3 in the divisors prime factorization. We can have 2^0,2^1, or 2^2. We can have 3^1,3^2,3^3 (not 3^0). We can have 5^0,5^1. We can have 7^0,7^1. So it is 3*3*2*2=9*4=36

Another solution. We can count all the ways that we can't get a 3. That is when we have 3^0, so 2^0,2^1,2^2 and 5^0,5^1 and 7^0,7^1. Total divisors is 3*4*2*2=48. We subtract 3*2*2=12. So 48-12=36 again.

Hope this helped!

How many sets of four vertices of a cube are coplanar? 

I think twelve.  The six faces, or course, to start with. 

For the other six:  Consider looking at one face of the cube.  Visualize a diagonal of that face, then push that line through the cube to the opposite face.  There's one plane through four vertices.  You can do that for each of the two diagonals on each face.  This might lead one to believe that there would be twelve of them, but you have to remember that the one you push through from this side is the same as one pushed through from the other side, so you have to halve the number.  

_.

Note that the roots are \(x = {-a \pm \sqrt{a^2-32a} \over 2}\). So the discriminant must be a perfect square. We can factor as a(a-32). So both a and a-32 are perfect squares. You can do casework from here to get a=-49,-18,-4,0,32,36,50,81. We need not to check these, as if a is even, then sqrt(a^2-32a) is even and vice versa. Our answer is then 8.

A    .18 (125)    +     500 =    ........  ml

B   Total result is  125   + 500 = 625 ml

         Divide answer A  by this to get fraction that is acid, multiply by 100 to get %