Factor each expression, 9x²-49

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

One integer is 5 more than another. their product is 104. find the integers

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?