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## Answers by Parviz F.

X - side of the original square:       ( X+3 )^2 = 64      X^2 + 6X + 9 = 64   X^2 + 6X - 55 = 0   (X +11) ( X -5 ) = 0    X = -11   X =5/ answer   Test...

5m - 7+3m = 19 + 7m   1.  Simplify both sides       5m - 7 = 19 + 7m   2 . Transposition and adding same quantity to both sides of equation are equivalent.         5m - 7m = 19 + 7    3...

equations? (answer)

d = √((27-4)^2 + (22- 5) ^2) =28.6   r = 28.6/2 = 14.3   Center ( (22 +5)/2 , (27+4)/2 ) = ( 27/2, 31/2)      Equation of a circle  ( X - 27/2 ) ^2 + ( Y - 31/2) ^2 = (14.3 ) ^2= 204.50

Only way is look up in calculator:       It asks    10 X = 21

GCF of 2 or more term is the product of the common factors with lowest exponents:     X^3 Y^2 + X^2 Y^2 + X^2 Y  (1)    X^2 Y  is the GCF of the terms of the above expression:     To Factor the above expression:      ...

31,000 - 275,000  = 0.13     /with rounding of to hundredth      275,000   0.13 = growth in 3 years= 13%   0.13/ 3 = 0. 043 = 4.3 % annual growth.

X - amount of \$11 mixed   323 - X - amount of \$13 mixed.     X ( \$11) + ( 312 - X ) 13= 312(\$) 12    11X + 312* 13 - 13X = 312*12     -2X = -312      X = 156   Amount of \$11 mixed     ...

Y = X^2 + 9X + 20     Choose 2 number a, b such that  a+b = 9   ab = 20                       a = 4 & b= 5 will be the answer:    ...

factorize please (answer)

Seems like a coefficient of 3 is missing from your cubic term.    - 3 X^3 + 5 X^2 - 5x + 3 =   - 3 ( X^3 - 1) + 5X ( X - 1 ) =      -3 ( X -1 ) ( X^2 + X + 1 ) + 5X ( X - 1 ) =       ( X - 1...

Equation of Line L2= m2X + b2 Perpendicular to L1 : 3X + 4y = 13 passing through ( 2, 7)         L1 :              y = -3/4 X + 13/4             ...

1. √X(√9 - 4/3 ) = √25   Square both sides of the equation:      X ( 3 - 4/3 ) = 25       X = 25 / ( 3 - 4/3 )     X = 25 /( 5/3)      X = 75/5 = 15   2.     (...

6500( 1 + 0.05/3) ^ (5*3) =     6500( 1.017 ^ 15) = 8370.04

Profit is maximized when the Cost is minimized, since demand , the revenue is fixed   C(x) = 1.1X^2 - 640X + 3000   The coefficient of X has to be -640, otherwise it will give negative value for production unit.     Vertex = 640/ 2(1.1) = 290.9 ≈291...

Width = 6   Height = 9   Area = 9*6= 54

W + L = 57 L = 2L+W   W + 21+W = 57     2W = 36   W = 18     L = 39

P( 1 + 0.08/12) ^ (40*12) = 1,000,000     P ( 1.007) ^ 480 = 1,000,000     log P + 480 Log(1.007)= 6      Lop P  + 480( 0.003) = 6     log P = 6- 1.44= 4.56      p = 10 ^ 4.56= 36,307...

I don't know what R5,95 is but it seems like should be R5.95     So , it looks like is unit scale for some measurement.      1 is R5.95, then 12.5 will be 12.5 times as much.      12.5 * R5.95 =R 74.375      ...

P = W -s       X Multiply both sides by X   PX = W - S    Add S to both sides of equation:      PX + S = W

Consider:   Y = mx + b   / Slope intercept form.    -m1x + Y = b  / Standard form.       find m1 to be - 1/m of line 9X +Y= 5        m1 is going to be  = - 1/m      ...

10-13.599= 2.5176928X 10‾14   Look up your calculator,2nd of log or just raise 10 to the power.

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