3 years ago

Write as a decimal. Ten and eighty-nine hundredths

Mathematics

1 answer:

balu736 [363]3 years ago

4 0

Answer:

10.89 is the answers

Step-by-step explanation:

hope this helps

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61,069,054 rounded to the nearest ten million

alex41 [277]

<span>61,000000 would be your answer.</span>

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An 18% discount on a watch saved a shopper $72. Find the price of the watch before the discount

Mamont248 [21]

1% = $4

$4 × 100 = $400

$4 × 18 = $72

Your answer is $400

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3 years ago

Solve

Jobisdone [24]

Answer:

I = p× r× t

300×8×4

pinicipal × rate × time

That is the formula

the answer is 300×8×4= 9600

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3 years ago

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

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3 years ago

What step do I do first

nata0808 [166]

You would have to Find the GCF

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