Answer:
B. 4
Step-by-step explanation:
Determine the constant of variation for the direct variation given.
(0, 0), (3, 12), (9, 36)
A. 3
B. 4
C.12
Direct variation is given by:
y = kx
Where,
k = constant of variation
(3, 12)
x = 3; y = 12
y = kx
12 = k*3
12 = 3k
k = 12 / 3
k = 4
(9, 36)
x = 9; y = 36
y = kx
36 = k * 9
36 = 9k
k = 36 / 9
= 4
k = 4
Constant of the variation = 4
40 km/s. I got this by dividing 280 by 7 to get 40 km/s.
Answer:
y=3/4(4)^x
Step-by-step explanation:
hello :
the graph passes through the point (1,3) : when x=1 and y=3 : 3= ab^1
the graph passes through the point (2,12) : when x=2 and y=12 : 12= ab^2
so the system : ab=3 ...(*)
ab² =12..(**)
ab² = b(ab) = 12 but : ab=3 so : (**) equivalent to b(3)=12 .... b=12/3=4
now : ab= 3 and b=4 so : 4a=3 ... a=3/4
y=3/4(4)^x
I’m pretty sure 30 because you multiply 10x3 I’m sorry if I’m wrong I haven’t done Surface Area in a long time