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AlladinOne [14]

3 years ago

8

Taika and her 4 friends bought a package of crackers for $3.69. How much will each friend pay to the nearest cent if the cost is

divided equally?

1 answer:

allochka39001 [22]3 years ago

5 0

Each friend is roughly going to be paying 73cent

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I was expecting a mirror but okay

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Prove that an = 4^n + 2(-1)^nis the solution to

olga nikolaevna [1]

Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute $a_n=4^n+2(-1)^n$ in the equation $a_n=3a_{n-1}+4a_{n-2}$ the equality is true.

Let's substitute first in the right hand side:

$3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})$

Now we use the distributive laws. Also, note that $(-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n}$ (this also works when the power is n-2).

$=3(4^{n-1})+6(-1)^{n-1}+4(4^{n-2})+8(-1)^{n-2}$

$=3(4^{n-1})+(-1)(6)(-1)^{n}+4^{n-1}+(-1)^2(8)(-1)^{n}$

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then the sequence solves the recurrence relation.

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3 years ago

It takes a guinea pig about 68 days to develop comepletely before it is born. Which of these is less than 68 days

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Drag an expression that matches each description in the table below.

ryzh [129]

Answer:

1: 500

2: 50

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Step-by-step explanation:

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3 years ago

Brian rehr obtains an installment loan of 1250 to buy canoe requires 24 monthly payments and has an apr of 10%

Norma-Jean [14]

Answer:

I believe it is 122.6

Step-by-step explanation:

1,250 - 24 = 1,226

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2 years ago