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3 years ago

8

The value of the digit in the hundreds place in the number 653,841 is 1/10 the value of the digit in the thousands place in whic

h number?
A. 748,917
B. 749,817
C. 784,817
D. 797,481

1 answer:

harkovskaia [24]3 years ago

8 0

The Best answer is C

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If Angela has $500 to invest at 2.5% per annum compounded quarterly, how long will it be

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N = number of compounding periods
Years = log (total / principal) / n * log (1 + rate / n)
Years = log (750 / 500) / 4 * log (1 + .025/n)
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Years = <span> <span> <span> 16.2692348382 </span> </span> </span>

Source Calculator
http://www.1728.org/compint.htm

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3 years ago

Last year, there were 24 boys and 20 girls on the school bus. This year, the number of boys decreased by 25%, but the number of

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Step-by-step explanation:

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Brass is made from a mixture of copper and other elements. a mixture that is 80% copper is combined with a mixture that is 60% c

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The equation that can be used to find x, the amount of the 60% mixture used to create the 65% mixture is:

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<h3>Which equation we should use?</h3>

First, let's define two variables:

x = pounds of the 60% copper brass.
y = pounds of the 80% copper brass.

We know that we want to make 100 lb of 65% copper brass, then we must have that:

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And the percentage of copper before and after mixing must be the same, so we can write:

0.60*x + 0.80*y = 0.65*(x + y).

(where the percentages are written in decimal form).

Then we have a system of equations:

x + y = 100

0.60*x + 0.80*y = 0.65*(x + y).

To get a single equation, we can isolate the variable "y" on the first equation:

y = 100 - x

Now we replace that in the other equation:

0.60*x + 0.80*(100 - x) = 0.65*(100).

This is what we wanted to get, an equation that can be used to find x, the amount of the 60% mixture used to create the 65% mixture.

If you want to learn more about systems of equations:

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2 years ago

Erick and Mia live the same distance from the park and decide to meet at the park

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Answer:

sorry I don't see any graph

Step-by-step explanation:

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Can someone help me with this?

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$\frac{7}{8} - \frac{1}{2}$
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3 years ago