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3 years ago

How do you divide a decimal with out a calculator?

2 answers:

7 0

Carry the decimals the same places to make the number you are dividing by whole and give the number you are dividing by the extra decimal places. then divide.

I hope that makes sense :/

damaskus [11]3 years ago

3 0

You divide a decimal the same way you would do a regular number.

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Klio2033 [76]

Answer:

a) $a_n=2(a_{n-1})$ , where $a_1=5$ .

b) $a_n=5(2)^{n-1}$

Step-by-step explanation:

The given sequence is

$5,10,20,40...$ .

The first term of the sequence is

$a_1=5$

The second term is $a_2=10$

The common ratio for this sequence can be determined using any two consecutive terms in the sequence.

Using the first two terms, the common ratio is

$r=\frac{a_2}{a_1}$

$\Rightarrow r=\frac{10}{5}=2$

a) The recursive rule is given by,

$a_n=r(a_{n-1})$

$a_n=2(a_{n-1})$ , where $a_1=5$ .

b) The explicit rule is given by $a_n=a_1r^{n-1}$

$\Rightarrow a_n=5(2)^{n-1}$

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3 years ago

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ivanzaharov [21]

Answer:

Step-by-step explanation:

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3 years ago

Find the ratio in lowest terms of 20 girls and 15 boys

Mila [183]

Answer:

4:3

Step-by-step explanation:

The ratio is 20 girls to 15 boys as it says 20:15 ,

but this is simply 4 parts to 3 parts or 4:3

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3 years ago

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777dan777 [17]

Answer:

Step-by-step explanation:

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3 years ago

For a particular angle Θ, the cosine function f(x) = a cos b(Θ) has the following values within one cycle of the function:

expeople1 [14]

If f(θ) = a cos(bθ), then from the first condition we find

f(0) = 3 ⇒ a cos(0) = 3 ⇒ a = 3

Together with the other conditions, it's evident that f(θ) has a period of π, so

2π/b = π ⇒ b = 2

so that

f(θ) = 3 cos(2θ)

7 0

2 years ago