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Hitman42 [59]
3 years ago
13

Every 60 seconds in Africa a minute passes​

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
5 0

Answer:

Oh it's common in all countries.

Elina [12.6K]3 years ago
4 0
Xuzhxbjzjxbxbdbdhxuxhxbd did
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15 pts. Prove that the function f from R to (0, oo) is bijective if - f(x)=x2 if r- Hint: each piece of the function helps to "c
solniwko [45]

Answer with explanation:

Given the function f from R  to (0,\infty)

f: R\rightarrow(0,\infty)

-f(x)=x^2

To prove that  the function is objective from R to  (0,\infty)

Proof:

f:(0,\infty )\rightarrow(0,\infty)

When we prove the function is bijective then we proves that function is one-one and onto.

First we prove that function is one-one

Let f(x_1)=f(x_2)

(x_1)^2=(x_2)^2

Cancel power on both side then we get

x_1=x_2

Hence, the function is one-one on domain [tex[(0,\infty)[/tex].

Now , we prove that function is onto function.

Let - f(x)=y

Then we get y=x^2

x=\sqrt y

The value of y is taken from (0,\infty)

Therefore, we can find pre image  for every value of y.

Hence, the function is onto function on domain (0,\infty)

Therefore, the given f:R\rightarrow(0.\infty) is bijective function on (0,\infty) not on  whole domain  R .

Hence, proved.

3 0
3 years ago
What is 10% of 80 anwser soon
Elena-2011 [213]
The correct answer is 8
10% of 80 is 8

Hope this helped :)

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3 years ago
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A plot of land is listed for sale with the following measurements: 1300 ft x 983 fting
natita [175]
What are you asking here?
5 0
3 years ago
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42 is how many groups of 7?
erica [24]
You divide 42 by 7 which equals 6
4 0
3 years ago
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X-3y=7 and 2x-6y=12 solving by elimination
Ber [7]

x-3y=7    2x-6y=12

You can multiply -2 in the first equation like this.

x+6y=7

2x-6y=12

Now you can eliminate 6y and -6y so cross them out and do x-2 which is -1 and 7-12 which is -5 -1/-5 would be .2

<h3 />
7 0
3 years ago
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