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lozanna [386]
4 years ago
15

What is the value of x?

Mathematics
1 answer:
Sauron [17]4 years ago
4 0
The value of x is 5. I’m not sure though
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PLEASE HELP <br> I forgot how to do this and it’s for a final :((
natima [27]
F(x)= 2/(x+1) and g(x)= -x2-12 => f(-7)= ? , g(2.5)= ?, g(f(- 0.5))= ?
In the expression of the function f(x) we will replace instead of x the number in bracket (-7) => f(-7) = 2/(-7+1)= 2/-6 = - 1/3
In the expression of the function g(x) we will replace instead of x number in bracket (2.5) => g(2.5) = - (2.5)squared -12= - 6.25 -12= - 18.25
Expression f(g(x)) or g(f(x)) is multiplication (composition) of the reflecting of functions f and g. We will do this in the following way => g(f(x))= g(2/(x+1))= -(2/(x+1))2 - 12= -(4/(x+1)2) -12= -4-12(x+1)2/(x+1)2=> we will replace instead of x the number in bracket (-0.5) or (-1/2) => g(f(-1/2) = -4-12((-1/2)+1)2/ ((-1/2+ 1)2= -4-12(1/2)2/(1/2)2=-4-12*(1/4)/(1/4)= (-4-3)/(1/4)=-28 
Eaisier way => f(-1/2)=2/((-1/2)+1)=2/(1/2)= 4  g(4) -(4)2-12 = -16-12= -28





8 0
4 years ago
The numbers 0.23350 has how many significant figures?
Alenkinab [10]

Significant figures are the digits that carry meaning to its measurement. Significant figures includes all the numbers excluding all the leading zeros, trailing zeros. All non zero digits are significant. Zeros between the non zero digits are significant. In a decimal number, trailing zeros are significant.

Now, consider the given number 0.23350

Since, in a decimal number all the trailing zeros are significant.

So, in the number 0.23350 there are five significant figures 2,3,4,5 and 0.

Therefore, there are 5 significant figures in the given number.

3 0
4 years ago
Read 2 more answers
A.
Oliga [24]
I’m not sure what the answer is, just trying to get points.... but I hope you find your answer :)
4 0
3 years ago
Please help right away thankkkksssss
Arisa [49]

Hi,

Irrational means not a whole number so b,c, and d are irrational. but to be more safe i would go for d.


8 0
4 years ago
PLEASE HELP ME!!<br> How is the coordinate system used for computers?
AlexFokin [52]
Youtube works wonders. Look it up 
7 0
4 years ago
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