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3 years ago

I need help with number 7 please, thanks.

Mathematics

1 answer:

kykrilka [37]3 years ago

8 0

B, that’s easy... Just add them up.

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Find the sum of a finite geometric series. The sides of an equilateral triangle measure 16 inches. The midpoints of the sides of

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48 + 24 + 12 + 6 = 90 inches or 3*(16+8+4+2) = 90 will be the right answer.

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3 years ago

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What conjecture can you make about the number of dots in the nth pattern?

Evgen [1.6K]

Answer:

$\frac{n(n + 1)}{2}$

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2 years ago

Need *friends*(13-15) pls and ty

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Answer: Sure!

Step-by-step explanation:

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Mrs. Adams deposited $12,000 into an account that earns an annual simple interest rate of 3.25%. She makes no other deposits or

lisabon 2012 [21]

Answer:

Mrs. Adams will earn $3,120 of interest at the end of year 8.

Step-by-step explanation:

Simple Interest

In simple interest, the money earns interest at a fixed rate, assuming no new money is coming in or out of the account.

We can calculate the interests earned by an investment of value A in a period of time t, at an interest rate r with the formula:

$I=A.r.t$

Mrs. Adams deposited an amount of A=$12,000 into an account that earns an annual simple interest rate of r=3.25%. We must find the interest earned in t=8 years. The interest rate is converted to decimal as:

$r=3.25/100=0.0325$

The interest is then calculated:

$I=12,000\cdot 0.0325\cdot 8=3,120$

Mrs. Adams will earn $3,120 of interest at the end of year 8.

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3 years ago

The value of a gold coin picturing the head of the Roman Emperor Marcus Aurelius is increasing at the rate of 11% per year. If t

Mrac [35]

To add 11% to an amount means to multiply the amount by 1.11.

You can start with $115 and multiply it by 1.11 eleven times.

A quicker way is to find 1.11^11 and then multiply by $115.

$115 * 1.11^11 = $115 * = 3.151757 = $362.45

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3 years ago