Step-by-step explanation:
Initially, there's only 1 letter.
Tania sends the letter to 4 friends.
Each friend sends a letter to 4 more friends (4 × 4 = 16).
Each of those friends sends to 4 more friends (16 × 4 = 64).
The pattern is 1, 4, 16, 64, etc.
This is a geometric sequence. The first term is 1 and each term is 4 times the previous term.
a₁ = 1
aₙ = 4 aₙ₋₁
The explicit formula is:
aₙ = 1 (4)ⁿ⁻¹
For 1 cylinder: 226.08 cubic inches
For all cylinders (overall): 678.24 cubic inches
Since I'm tired....
Formula: Pi × (radius × radius) × height
The difference between 34 percent and 29 percent is :
34 - 29 = 5 percent.
60 million times 5% = 60 x 0.05 = 3 million
to check:
60 million x 34% = 20,400,000 barrels
60 million x 29% = 17,400,000 barrels
20,400,000 - 17, 400,000 = 3,000,000 barrels
There are 3 million more barrels of gasoline.
Answer:
x=1
×+10=11
-10 -10
x = 1
