Use the x-intercept method to find all real solutions of the equation x^3-10x^2+17x+28=0
2 answers:
Answer:
x = -1, x = 4 and x = 7
Step-by-step explanation:
x-intercept method consists in plotting the equation, in this case x^3-10x^2+17x+28, and see where the graph intersects the x-axis. These are the points where for a given value of x, y = 0, and they are called the solutions of the equation. In this case these points are: x = -1, x = 4 and x = 7 (see figure attached).
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The Dolphins football team gained 16 yards on their first play, then lost 11 yards on the next play. Write an addition expression to represent this situation. Find the sum and explain its meaning.
Answer: On the first play, Dolphin's football team gained 16 yards.
On the 2nd play, Dolphin's football team lost 11 yards.
Therefore, the addition expression to represent this situation is:
The sum of this expression is:
Therefore, we can interpret it as: Dolphin's football team gained 5 yards over the 2 plays