Let <em>y</em> = √(<em>x</em> - 10), so that <em>y</em>² = <em>x</em> - 10.
Then <em>x</em> = <em>y</em>² + 10 so that √<em>x</em> = ±√(<em>y</em>² + 10).
So we've rewritten the equation as
<em>y</em> = ±√(<em>y</em>² + 10)
In either case, squaring both sides gives
<em>y</em>² = <em>y</em>² + 10
and eliminating <em>y</em>² gives us the false result
0 = 10
so there is no solution.
Answer: package B is the better deal.
Step-by-step explanation:
package A offers free phone and 300 minutes. it will cost 0.12 per minute for each minute over the plan time. Also, package A has a base rate of $39.95. This means that if you average 356 minutes per month in talk time, the cost using package A would be
0.12(356 - 300) + 39.95 = $46.67
package B : phone costs $10 and has 350 minutes of time and 0.08 per minute for each minute over the plan time. Also, package B has a base rate of 35.95 not including the phone. This means that if you average 356 minutes per month in talk time, the cost using package B would be
10 + 0.08(356 - 350) + 35.95 = $46.43
Therefore, package B is the better deal since it is cheaper.
There is no such thing as the slope form of an equation with only a single variable.
If 3x + 5 = 18, then x = 4 and 1/3 .
There's only a slope if the equation makes a line on a grapoh.
This equation only makes a single point.
Answer:
8 miles
Step-by-step explanation:
:p