Solve each irrational equation. If an equation has no solution, so state:
a. 3/x - 1/6 = 1/x
b. 13/y-1 - 3 = 1/y-1
A car travels 60 miles in the same time that a car traveling 10 per hour faster travels 90 miles. What is the rate of each cars?
Find the indicated root or state that the expression is not a real number:
a. 3sqrt8/125 This is the cube root of 8/125
b. -4sqrt81
Simplify each expression:
a. sqrt45x^23
b. sqrt96/3
Add or subtract as indicated:
a. 4sqrt72 - 2sqrt48
b. sqrt75 - sqrt48
2007-10-30 01:37:47 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Ugh, I dislike math.
Sorry, can't solve these for you.
2007-10-30 01:40:21 · answer #1 · answered by Mom of 2 great boys 7 · 0⤊ 2⤋
Eh. I'll help you with the second one:
Where x is the rate
t*x =60
t*(x+10) = 90
Where x is the rate and t is the time.
Now, for the algebra ones, just solve one of the equations for one variable and substitute the value in the other equation.
In my example, x=60/t
Then you'd substitute 60/t everywhere there's an x in the second equation and numerically solve for t. Plug the number value of t back into the first equation and you've got it.
2007-10-30 08:44:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
How about you post your work, then get someone else to check it? Then we will know you have at least tried.
2007-10-30 08:40:28 · answer #3 · answered by cuddles_gb 6 · 0⤊ 1⤋