In an arithmetic series, the value of the nth term is calculated using the equation,
an = ao + (n - 1)(d)
where an and ao are the nth and the 1st term, respectively. d is the common difference, and n is the number of terms.
In the given, an = 48, a0 = 93, d = -5 and n is unknown. Substituting the known values,
48 = 93 + (n - 1)(-5)
The value of n from the equation is 10. Thus, the answer is the last choice.
Answer:
7 mph
Step-by-step explanation:
If b is the rate of the boat, and s is the rate of the stream, then:
b − s = 4
b + s = 10
Solve the system of equations with substitution or elimination. Using elimination, add the equations together:
2b = 14
b = 7
The boat's rate is 7 mph.
Answer:
27 temporary employees
Step-by-step explanation:
Given information: 30 employees, 90% temporary
To find the number of temporary employees we can do: 30*90%=30*0.9=27
There are 27 temporary employees
Answer:
7/18
Step-by-step explanation:
²
=((2*7)+4)/7
2*7=14
14+4=18
18/7⇒7/18
