Answer:
20 miles per hour
Step-by-step explanation:
traveling against the wind was 160mph (400/2.5)
traveling with the wind was 200mph (400/2)
going against the wind is going in the negative direction of the wind speed, and going with the wind is going in a positive direction of the wind speed, therefore the wind speed is |direction1-direction2|/2, which would be |200-160|/2 = |40|/2 = 20mph
(180mph is neutral speed with no wind, with wind affecting this neutral speed ±20mph)
Answer:
4
Step-by-step explanation:
Step-1 : Multiply the coefficient of the first term by the constant <span> <span> 6</span> • -1 = -6</span>
Step-2 : Find two factors of -6 whose sum equals the coefficient of the middle term, which is <span> -5 </span>.
<span> -6 + 1 = -5 That's it</span>
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -6 and 1
<span>6y2 - 6y</span> + 1y - 1
Step-4 : Add up the first 2 terms, pulling out like factors :
6y • (y-1)
Add up the last 2 terms, pulling out common factors :
1 • (y-1)
Step-5 : Add up the four terms of step 4 :
(6y+1) • (y-1)
Which is the desired factorization
Final result :<span> (y - 1) • (6y + 1)</span>
