An airplane is flying from New York City to Los Angeles. The distance it travels in miles, d, is related to the time in seconds,
1 answer:
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Answer:
(a) ,
,
,
,
,
,
.
(b) ,
,
,
,
,
,
,
.
Step-by-step explanation:
In this exercise we only need to recall the formula for C(n,k):
where the symbol is the factorial and means
.
By convention 0!=1. The most important property of the factorial is , for example 3!=1*2*3=6.
(a) The explanations to the solutions is just the calculations.
.
(b) The explanations to the solutions is just the calculations.
For all the calculations just recall that 4! =24 and 5!=120.
Answer:
D
Step-by-step explanation:
Using the rule of radicals
=
×
⇔
Given
×
= ×
= ×
Cancel on numerator/ denominator
= ×
= ×
Cancel on numerator/ denominator, leaving
= → D
The answer is -2/3 from the solution above
