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4 years ago

What one half multiplied by 4/5

Mathematics

1 answer:

MrRa [10]4 years ago

7 0

Answer:

2/5

Step-by-step explanation:

1. 1/2 * 4/5

2. 4/10

3. reduce/divide the fraction by 2

4. you get 2/5

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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,

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

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3 years ago

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What does 1,580÷25=I know the answer, I need to show how I got it.

ziro4ka [17]

$\begin{gathered} \sqrt[25]{1580} \\ 1\text{ and 15 cannot divide 25 therefore, we use the first three numbers to divide 25} \\ \frac{158}{25}\text{ = }6\text{ remainder 8} \\ \text{You have to carry that remainder which is 8 and combine it with the 0 in 1580.} \\ \frac{80}{25}\text{ = }3\text{ remainder 5} \\ The\text{ remainder 5 will also divide 25} \\ \frac{5}{25}=0.2 \\ The\text{ quotient values are 63 + 0.2 = 63.2} \end{gathered}$

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