Answer: 2x=2y
Explain: I think because never you subtract 2x and 2y
Roberto overtakes Juanita at the rate of (7.7 mi)/(11 h) = 0.7 mi/h. This is the difference in their speeds. The sum of their speeds is (7.7 mi)/1 h) = 7.7 mi/h.
Roberto walks at the rate (7.7 + 0.7)/2 = 4.2 mi/h.
Juanita walks at the rate 4.2 - 0.7 = 3.5 mi/h.
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In a "sum and diference" problem, one solution is half the total of the sum and difference. If we let R and J be the respective speeds of Roberto and Juanita, we have
R + J = total speed
R - J = difference speed
Adding these two equations, we have
2R = (total speed + difference speed)
R = (total speed + difference speed)2 . . . . . as computed above
Step-by-step explanation:
Given functions are:
The operations on functions can be performed just as they are performed on polynomials
So
Combining like terms
Hence,
Keywords: Functions
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Answer:
0
Step-by-step explanation:
Anything times 0 is 0.
Answer:
e
Step-by-step explanation:
