Answer:
i have no idea
Step-by-step explanation:
Hi,
Pretty simple: if a result of a multiplication is equal to 0, then each factor is equal to 0.
y = f(x) = (x -- 5)(x + 2)² = 0, so:
x₁ -- 5 = 0 ⇒ x₁ = 5.
(x + 2)² = 0 ⇒ x₂ = x₃ = --2, for --2 we have state of multiplicity = 2.
Green eyes.
For the answer to the question above,
<span>Let x = the length of the first piece </span>
<span>Then 3x = length of the second piece </span>
<span>And 5x + 2 = length of the third piece </span>
<span>Now, add all three of these together and set equal to 47: </span>
<span>x + 3x + (5x + 2) = 47 </span>
<span>Now combine all the like terms and solve for x. Then use that value to find the length of the third piece.</span>
Remember that Distance = (Average speed)(Time)
Let x be the distance between Detroit and Columbus.
We know the journey from Detroit to Columbus took a time t, and the returning trip took a time t+

. We also know the Average speed of both journeys, so now we can set our equations:

Now, we can replace equation 1 into equation 2 to find t:




Now that we know t, we can replace it into our equation 1 to get the distance:


We can conclude that the distance between Detroit and Columbus is 220 miles. <span />