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Just do it the same way I just did your first question......if you understand THAT answer , you can do this one with diferent numbers ......

can i give u more questions to answer, just do it as fast as u can, u dont have to show the work

A parabola opening up or down has vertex (0,-3) an passes through (10,-8). Write its equation in vertex form

**** deleted *****    misread

12 ( 6y + 9z)

or

36 (2y+3z)  

Vertex   (h,k)   =  (0,2)

vertex form   y = a(x-h)^2 + k

                     y = a (x-0)^2 + 2

\sub in the point given to calc 'a'

6 = a4^2 + 2

4 = 16a    a = 1/4

y = 1/4x² + 2

but can u write it in its vertex form?

(1 /4 - 1/5 )x  = 3 liters     solve for x

Ooops.....you are correct !   I edited it....sorry if I confused ya ! 

vertex will be the high (mound shaped) or low point (bowl shaped)

the point given is HIGHER than the vertex    .... so this is bowl shaped 

maybe, I think you fliped the nubers but that was pritty helpful 

ab/ac * bc = b^2

 =  11.25/20  *  36 = b^2       b = 4.5

4.5 *c = 36      c = 8                   a = 2.5         

16 ( 4b - c)     ?       *** edited ***

The center of the base is the point where the diagonals intersect.

First, let's find the length of the diagonal.

Draw in one diagonal; this will give us a right triangle whose hypotenuse is the diagonal,

and whose sides are the sides of the box.

We can use the Pythagorean Theorem:  c²  =  a² + b²   --->   c²  =  16² + 16²

    c²  =  256 + 256  =  512     --->     c  =  sqrt(512)  =  16

To find he distance from the center of the base to a corner of the opposite base:

draw a right triangle from the center of the base to a corner of the base then up the side.

From the center of the base to a corner of the base is one-half of a diagonal = 8.

Up the side is 4.

We can again use the Pythagoren theorem with one side = 8, the other side = 4, and we

need to find the hypotenuse:  c²  =  a² + b²   --->   c²  =  8² + 4²  =  64 + 16  =  80

   --->   c  =  sqrt(80)

Or would it be 1k?

Wait for the first question it would be 950 right

Which 2019 bars are taller than the 2018 bars (for the same object)?

I got it! Could you help on my latest question! Thank you!!

The four roots of this quartic are:  1 - sqrt(2)   1 + sqrt(2)   2 + sqrt(5)   2 - sqrt(5)

The polynomial will be: 

  [ x - ( 1 - sqrt(2) ) ] · [ x - ( 1 + sqrt(2) ) ] · [ x -  ( 2 + sqrt(5) ] · [ x - ( 2 - sqrt(5) ) ]  =  0

You'll need to multiply it out ...

And may you please help with, https://web2.0calc.com/questions/help_8535? Thank you!!!!

Follow these steps:

1) Find the mean of the numbers (add them all together and divide by the number of numbers).

2) Subtract the mean from each of the numbers.

    Find the absolute value of each of these answers (make each answer positive).

3) Add all your answers from step 2) together.

4) Divide the answer to step 3) by the number of numbers.

Using the law of cosines we can find angles B and C.

∠B = 104.478°             ∠OBL = ∠B /2 = 52.239°

∠C = 46.567°               ∠OCL = ∠C /2 = 23.2835°

Using the law of sines we can find the side CO of the triangle COB.

CO = 3.266

Radius   r = sin(OCL) * CO = 1.291

NQ = MR = 2r = 2.582

CQ = NQ / tan(∠C) = 2.444

BQ = 4 - CQ = 1.556

Angle MBR = 180 - ∠B = 75.522°

BR = MR / tan(MBR) = 0.667

And finally...       MN = BQ + BR = 2.223      

Factoring these numbers:  2  =  2¹

                                           4  =  2²

                                           6  =  2 x 3

                                           8  =  2³

                                         10  =  2 x 5

                                         12  =  2² x 3

Combining:  2¹⁰ x 3² x 5

Perfect squares must have even powers; therefore, none will contain the single 5.

Possible perfect squares:

        2²,   2²·3²,   2⁴,   2⁴·3²,   2⁶,   2⁶·3²,   2⁸,   2⁸·3²,   2¹⁰,   2¹⁰·3²

Could you please help with: https://web2.0calc.com/questions/help_8535, and https://web2.0calc.com/questions/question_8023?

Thank you! 

Yes; you're right!