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3 years ago

Find the product of -9 and -3. 27 -27 3 -3 I NEED THIS ASAP!!!

Mathematics

1 answer:

svp [43]3 years ago

6 0

Answer:

negative number times negative number gives you positive number.

Step-by-step explanation:

-9x-3

=27

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What is the exponential function modeled by the following table?

steposvetlana [31]

Answer:

$f(x)=9^{x-1}$

Step-by-step explanation:

The general form of the exponential function is,

$y=ab^x$

The points on the graph will be,

$(2,9),(3,27),(4,81)$

Putting the points in the function,

$9=ab^2$ -----------------------------------1

$27=ab^3$ ---------------------------------2

Dividing equation 2 by equation 1,

$\Rightarrow \dfrac{27}{3}=\dfrac{ab^3}{ab^2}$

$\Rightarrow 9=\dfrac{b^3}{b^2}$

$\Rightarrow b=9$

Putting the value of b in equation 1,

$\Rightarrow a(9)^2=9$

$\Rightarrow a=\dfrac{9}{9^2}$

$\Rightarrow a=\dfrac{1}{9}$

Putting all the values,

$\Rightarrow y=\dfrac{1}{9}\cdot 9^x$

$\Rightarrow y=9^{x-1}$

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3 years ago

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A skateboard travels 55 feet in 4 seconds. Is the skateboard going faster, slower, or the same speed as the scooter?

Assoli18 [71]

Answer:

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Step-by-step explanation:

I belive it is slower because the scooter was 30 feet per 2 seconds. 30+30+60 feet, 2+2= 4 seconds= 60 feet and 4 seconds which makes the 55 feet per 4 seconds slower.

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4 years ago

Which number is rational?

Romashka [77]

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Step-by-step explanation:

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Step-by-step explanation:

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