Answer:
r = - 
Step-by-step explanation:
Given that r varies inversely as t , then the equation relating them is
r =
← k is the constant of variation
To find k use the condition t = - 6 when r = - 2, then
- 2 =
( multiply both sides by - 6 )
12 = k, thus
r =
← equation of variation
when t = - 7, then
r =
= - 
Answer:
= 18n + 26
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 44 and d = 62 - 44 = 18 , thus
= 44 + 18(n - 1) = 44 + 18n - 18 = 18n + 26
Wheres the prism to the question?
Answer:
Step-by-step explanation:
p=2(l+w)
206=2(x+y)
206=2x+2y
x=width, y=length
x+9=y
206=2x+2(x+9)
206=2x+2x+18
206=4x+18
x=47
y=47+9
y=56