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Luden [163]
3 years ago
15

The tens digit of a 2 digit number is twice the units digit. The sum of the digits is 12. Find the original number.

Mathematics
1 answer:
Mice21 [21]3 years ago
3 0

Answer:

84

Step-by-step explanation:

4 * 2 = 8

8+4 = 12

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Given r(x) = startfraction 11 over (x minus 4) squared endfraction , which represents a domain restriction on r(x) and the corre
Dmitry_Shevchenko [17]

The domain and inverse of the function

r(x) = \frac{11}{(x - 4)^2} is

Domain = \mathbb{R} - \{4\},

r^{-1}(x) = \pm \sqrt{\frac{11}{x}} + 4

What is a function?

A function from A to B is a rule that assigns to each element of A a unique element of B. A is called the domain of the function and B is called the codomain of the function.

There are different operations on functions like addition, subtraction, multiplication, division and composition of functions.

The given function is

r(x) = \frac{11}{(x - 4)^2}

r(x) is not defined if x - 4 = 0

r(x) is not defined for x = 4

Domain = \mathbb{R} - \{4\},

Where \mathbb{R} is the set of all real number

Let r(x) = y

\frac{11}{(x-4)^2} = y\\(x - 4)^2 = \frac{11}{y}\\x - 4 = \pm \sqrt{\frac{11}{y}}\\x = \pm\sqrt{\frac{11}{y}}  +4

<em />r^{-1}(x) = \pm \sqrt{\frac{11}{x}} + 4

To learn more about function, refer to the link:

brainly.com/question/22340031

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3 0
1 year ago
If you multiply two decimals less than 1,can you predict whether the product will be less or greater than either of the factors?
jek_recluse [69]
You can predict that it will be less then either of the factors. if you take half of half from anything will you ever have more than half of the original. 
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4 0
3 years ago
Read 2 more answers
Divide.round your answer to the nearest hundredth 1divide 3
Sonbull [250]

Answer:

.33

Step-by-step explanation:

<em>Hey there!</em>

1 / 3

= .333333333

.33 rounded to the nearest hundredth

<em>Hope this helps :)</em>

3 0
3 years ago
Please help second question​
saw5 [17]

Answer:

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7 0
4 years ago
An asteroid is 10^{8} miles away from earth, and it is traveling at a speed of 10^{5} miles per day. How many days will it take
Nikolay [14]

Answer:

It will take 10^3 days for the comet to reach earth.

Step-by-step explanation:

10^8 = 100,000,000

10^5 = 100,000

100,000,000/100,000 = 1,000

1,000 is equal to 10^3

So it will take the comet 10^3 days to reach earth.

7 0
3 years ago
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