Olga Said:

help with solving (please show the steps) three algebra practice problems for a test tomorrow...?

We Answered:

- 4(2x - 6) + 7x = 5x + 24
- 8x + 24 = - 2x + 24
6x = 0
x = 0

Answer: x = 0

Proof:
- 4(2[0] - 6) + 7(0) = 5(0) + 24
- 4(0 - 6) + 0 = 0 + 24
- 4(- 6) = 24
24 = 24
------------
√(3x + 7) = 3x + 5
9x² + 15x + 15x + 25 = 3x + 7
9x² + 27x = - 18
x² + 3/2x = - 2 + (3/2)²
x² + 3/2x = - 8/4 + 9/4
(x + 3/2)² = 1/4
x + 3/2 = ± 1/2

x = 1/2 - 3/2, x = - 2/2, x = - 1
x = - 1/2 - 3/2, x = - 4/2, x = - 2

Answer: x = - 1, - 2

Proof (x = - 1):
√(3[- 1] + 7) = 3(- 1) + 5
√(- 3 + 7) = - 3 + 5
√4 = 2
2 = 2

Proof (x = - 2):
√(3[- 2] + 7) = 3(- 2) + 5
√(- 6 + 7) = - 6 + 5
√1 = - 1
± 1 = - 1
-------------
x² + 6x + 16 < 8
x² + 3x < - 8 + 3²
x² + 3x < 1
(x + 3)² < 1
x + 3 < ± 1

x < 1 - 3, x < - 2
x < - 1 - 3, x < - 4

Answer: x < - 2, - 4

Alex Said:

Is there anywhere online I can do practice math problems?

We Answered:

http://www.intmath.com/

Bradley Said:

Anyone know any good online sites that have practice problems for pre-algebra?

We Answered:

yes..


www.helpwithmath.com has a great program called MathXpert which is as good as a tutor.

Evelyn Said:

I need some help with Algebra practice problems.?

We Answered:

1. sqrt8 = sqrt( 2*2*2) = 2*sqrt(2)

2. -sqrt25 [what's with the negative?] = -sqrt(5*5) = -5

3. sqrt36/sqrt3 = sqrt(3) * sqrt(12) / sqrt(3) = sqrt(12) = sqrt(2*2*3) = 2*sqrt(3)

4. 9sqrt50x^2/3sqrt2x^4 = 9*sqrt(2)*sqrt(25x^2) / [sqrt(2)*sqrt(x^4)] = 9*5*x / (x^2) = 45/x

5. sqrt16xy^2 = 4y*sqrt(x)

Irma Said:

Could someone give me a few practice algebra problems dealing with line slope and (h,k) form?

We Answered:

1) Slope of a line passing through (3,4) and (6, -6)
2) Equation and slope of line passing through (0,5) and (5.-5)

Vernon Said:

does anyone no where i can find some algebra 1 practice problems online plz help?

We Answered:

Here's some practice problems, and some have links for the solution if you get stuck:

http://www.coolmath.com/algebra/algebra-…
(click on the start button at the bottom of the page for more problems)

http://www.analyzemath.com/Algebra1/Alge…

http://www.sosmath.com/algebra/algebra.h…

Bonnie Said:

Where can i find some practice Algebra 2 problems to do?

We Answered:

www.classzone.com