Answer:
Step-by-step explanation:
f(1)=-11
f(n)=f(1)+d(n-1)
so d=22
f(n)=f(n-1)+22
Answer:Average score for 3 tests is 83.67
Step-by-step explanation:sorry if im wrong
Answer:
x=-2, y=8. (-2, 8).
Step-by-step explanation:
8x+5y=24
y=-4x
----------------
8x+5(-4x)=24
8x-20x=24
-12x=24
x=24/-12
x=-2
y=-4(-2)=8
Answer:
It is 4/5
Step-by-step explanation:
hope it helps ^^
Answer:
B
Step-by-step explanation:
given x varies inversely with y, the the equation relating them is
x = ← k is the constant of variation
To find k use the condition x = 6 when y = 10, hence
k = xy = 6 × 10 = 60
x = ← equation of variation
When x = 8, then
8 × y = 60 ( divide both sides by 8 )
y = = 7.5 → B