ElectricPavlov

For the 'x'  portion    -6x(10)  + 7t x = - 39 x

                                    -60 x + 7tx = - 39x

                                                 7tx = 21x

                                                    t = 3

a =    K * b/c      solve for the proportionality constant 'K' with the first numbers given

3 = K * 5/9

K =  27/5  

a = 27/5  b/c   now sub    in the second a and b

4 = 27/5  3/c

c = 27/5 * 3/4 = 4.05

3 - 4 -5 is a right triangle      area = 1/2  L₁ * L₂   = 1/2 * 3 * 4 = 6 units²

Sum of ingredients = sum in final solution

x = amount of 25 %         acid content:  .25x

10 = amount of 12%                             .12(10)

fianl product = .20 (10+x)

.25x + .12(10) = .20 (10+ x)        solve for 'x' =  the amount of 25% to be used in gallons

5 s / 3 b  * 6 b /3 h   * 3 h  =   10 stars

7+11-5 =   13     out of 30 play basketball or baseball

2x^2 + 6x + 11

2 (x^2+3x) + 11

2 ( x+ 1.5)^2  - 4.5 + 11

2(x+ 1.5)^2  + 6.5                 h = - 1.5

f(-2) =  -1/2 +  (-1/2 / (1-1/2) )

        = - 1/2  +  ( -1) = - 3/2      

for the second part sub in   -2/3    for     x^-1   

What answers did you get so far?

2x^4 * 3x^10    results in    6 x^14         (x^2+5)^7   results in  (1) x^14        subtracted from the first term results in 5 x¹⁴      Degree 14