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3 years ago

Complete the recursive formula of f(n)

Mathematics

1 answer:

Nitella [24]3 years ago

3 0

Answer:

F(1) = 45

f(n) = f(n-1) * (4/5)

Step-by-step explanation:

f(n) = 45 x (4/5)ⁿ⁻¹

f(1) = 45 x (4/5)¹⁻¹ = 45 x (4/5)⁰ = 45 x 1 = 45

f (n-1) = 45 x (4/5)ⁿ⁻¹⁻¹ = 45 x (4/5)ⁿ⁻²

f(n) = f(n-1) * (4/5)¹ = 45 x (4/5) ⁿ⁻²⁺¹ = 45 x (4/5)ⁿ⁻¹

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2 years ago

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A shop makes a profit of £2750 in March it has an Easter sale and the profit for April is £3162.50. Work out the profit percenta

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Answer:

The profit percentage increase is given by:

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Step-by-step explanation:

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3 years ago

a store is having a sale in which all items are reduced 20%. Including tax, Jennifer pail $21 for a pair of shorts. If the sales

andrey2020 [161]

Answer:

$25.

Step-by-step explanation:

Let x be the original price of shorts.

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$\text{ Price of shorts after discount}=x-0.2x$

$\text{ Price of shorts after discount}=0.8x$

Since tax is added after the discount, so the price of shorts after including the tax will be:

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We are told that including tax, Jennifer paid $21 for a pair of shorts. So we can set an equation as:

$0.8x+(\frac{5}{100}\times 0.8x)=21$

Now let us solve for x.

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3 years ago

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for the 8

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4 years ago

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ValentinkaMS [17]

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