Question 1148093
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For the first two questions, the statements of the problems are not at all clear....<br>
For any equation of the form A*B=C, as long as C is not 0, the equation has a single solution for A given a value for B, and a single solution for B given a value of A.<br>
If in an equation of that form C=0, then one of A or B has to be 0; then there is an infinite number of solutions for the other number, since any number times 0 is 0.<br>
There are no equations of that form that have no solutions.<br>
last question....<br>
The trip is 9 hours, from 9am to 6pm; in the first 2 hours at 70mph, she travels 70*2=140 miles; she has 700-140=560 miles left to go; she wants to travel those 560 miles in 9-2=7 hours.<br>
What speed is required to travel 560 miles in 7 hours?<br>