Answer:
(a)
Step-by-step explanation:
Note the expansion of (x - 5y)² is
(x - 5y)² = x² - 10xy + 25y² , that is
(x - 5y)² = x² + 25y² - 10xy ← substitute given values
(- 16)² = 416 - 10xy
256 = 416 - 10xy ( subtract 416 from both sides )
- 160 = - 10xy ( divide both sides by - 10 )
xy = 16 → (a)
Simplify the integrand:
Now integrate one term at a time.
Putting everything together,
Answer:
when you divide both sides of any inequality by a negative number, you need to greater than the inequality symbol
Step-by-step explanation:
have a great day ahead :)
Answer:
Second Attempt is faster.
Step-by-step explanation:
He reads 360 words in 
hour in the first attempt and in the second attempt he reads the same number of words in 
hour.
Since, 
he takes less time in the second time. Less time means the work is done faster.
Therefore, second attempt is faster.
Answer:
B.
Step-by-step explanation:
