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Ymorist [56]
2 years ago
15

an item regular price of $40 . Kira bought it on sale for 65% off the regular price. How much did he Kira pay?​

Mathematics
1 answer:
inna [77]2 years ago
8 0
The answer is $14 because 65% of $40 is 26 and 40-26=14
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Need urgent help in mathematics!! Will mark brainliest!!!!
Nataly [62]

₇P₅ is a permutation. you can find this setting in the statistics menu of your scientific calculator (i think).

If you don't have a scientific calculator, you can use the following formula:

nPr = \frac{n!}{(n - r)!}

₇P₅  = \frac{7!}{(7 - 5)!}

     = \frac{7}{2!}

     = \frac{7 * 6 * 5 * 4 * 3 * 2!}{2!}

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Answer:

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Step-by-step explanation:

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3 years ago
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4 0
3 years ago
What was Mike's average rate of descent over his last three hours?
Romashka [77]

Answer:

<em>The average rate of descent over the last 3 hours is 1000 ft/h. </em>

Step-by-step explanation:

<u>Rate of Change</u>

It's usually referred to as to the variation that one magnitude has in reference to another. The reference magnitude can be time t. The rate of change is calculated as the slope of the curve that represents the function.

The image shows the variation of Mike's height above sea level in feet with time in hours. We need to calculate the rate of change in the last three hours (from 7 to 10).

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Note the rate of change is negative, which means the height is decreasing.

The average rate of descent over the last 3 hours is 1000 ft/h.

8 0
3 years ago
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