I think of a number multiply by two then subtract 9

Mathematics

1 answer:

EastWind [94]3 years ago

3 0

Answer:

2n - 9

Step-by-step explanation:

Let the number be n. Then "a number multiply by two then subtract 9" yields

2n - 9

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PLEASE PLEASE PLEASEE PLEASEEEEESE HELPME!?!?!? IM SO BAD AT MATH PLEASE HELP!!!

Fiesta28 [93]

For this case we have the following function:
$f (x) = 0.01 * (2) ^ x
$
By definition, the average rate of change is given by:
$AVR = \frac{f(x2) - f(x1)}{x2 - x1}$
We evaluate the function for the given values:
For x = 7:
$f (7) = 0.01 * (2) ^ 7

f (7) = 1.28$
For x = 14:
$f (14) = 0.01 * (2) ^ {14} f (14) = 163.84$
Then, replacing values we have:
$AVR = \frac{163.84 - 1.28}{14 - 7}$
$AVR = 23.22$
Answer:
the average rate of change from x = 7 to x = 14 is:
a. 23.22

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Nikolay [14]

Answer:

Step-by-step explanation:the half of 32 is 16 so 16 times 2 =-=

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Tanzania [10]

It must end in a 0 for the number to be divisible by 10. The other 5 can go in any order, so 5 factorial (5!) = 5*4*3*2*1

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What was gabriel error

Pavlova-9 [17]

The change is given by the difference between how much you paid and how much you actually had to pay. For example, if you pay with a $50 bill and you had to pay $13, your change will be $50-13 = 37$ dollars.

In this case, we have

$30 - (2.5x+2y-2) = 30-2.5x-2y+2 = 32-2.5x-2y$

So, Gabriel's mistake was to leave the negative sign to the "-2" at the end of the expression, instead of flipping it to positive "+2" when subtracting it.

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The number of sides is the same as the number of lines of symmetry and the order of rotational symmetry.

So, a regular decagon would have 10 lines of symmetry.

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3 years ago

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