Math for Kids

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2012-02-07 Algebra - Online exam, Help please!:

1. Evaluate (3x + 6) ÷ [y3(x + 2)] if x = 2 and y = 1.  Note the expression is 3(x+2)/(y³(x+2)); y is 1, so y³ is 1; to evaluate, put in 2 for x.    2. Simplify the following expression: (16x+24)/8 + [2(y-3)-1]/[(27y-18x)/9]

2012-02-07 Algebra - Algebra:

Here's some of them.  I got tired of doing inequalities  1. x > 2/3 or x < -2  2. 6/5, -2  3. -2 <= p <= 6  4. r not equal to 4  5. 1.25 < n < 3.75  6. t = 0,3  7. k < -1 or k > 1/3  19. 14,16,18 or 16

2012-02-07 Algebra - Alebra 2:

To solve these, I will call the distances u and v.  In the x direction, I will call the distance ux and vx.  In the y direction, I will call the distance uy and vy.  The angles for u and v will be called

2012-02-07 Algebra - Math Help!:

Systems 2  1. A, 2. D, 3. A, 4. D, 5. B, 6. B, 7. D, 8. C, 9. B, 10. C  Systems 3  1. A, 2. B, 3. B, 4. B  Systems 4  1. A  2. 6x+4y=-4, 6x-9y=30, subtract to get 17y=-34 so y=-2, x=2,  3. D, 4. D  Systems

2012-02-07 Basic Math - fraction:

Hello, David.    1 3/10 + 3 2/5      The first step in this problem is to convert each mixed number into an improper fraction. To do this, first multiply each denominator by its respective whole number