For easier, let's say x represents a pack of 10 and y represents a pack of 30
we can start with 2 of the 30's
2y=60
we can replace one of the 30's with 3 of the 10's
y+3x=60
and finally we can use all 10's
6x=60
there are only 3 ways
<u><em>Answer:</em></u>
<u><em>B is correct</em></u>
<u><em>Step-by-step explanation:</em></u>
<u><em>Please give me brainliest</em></u>
Answer: 245 feet
Step-by-step explanation:
Given: The height of the rocket after t seconds is represented by the formula:
[Differentiate both sides w.r.t. t]
Put
Also, i.e. height is maximum at t=7.
Maximum height =
Hence, the maximum height the rocket reaches = 245 feet.
Answer:
1/216
Step-by-step explanation:
Move variables to one side and constants to the other
9^3x-9^2x=3
factor out 9^2x
(9^2x)(8)=3
9^2x=3/8
3^4x=3/8
3^3x=1/8
x=1/8 x 27
x=1/216