Write a subtraction equation to model the following problem. Then solve the equation. A traffic helicopter descends 168 meters to be 434 meters above the ground. What was the original height of the helicopter?
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Part 1
Let h be the original height of the helicopter. What is a subtraction equation that models the problem?

h minus 168 equals 434
Part 2
What was the original height of the helicopter?

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.