Wish I could help. :( But I'm not sure.
The value of x the function when x = -7.5 is 34.5
<h3>Functions and values</h3>
Functions are written in terms of variables
Given the expression –3.8x + 6, when the value of x is -7.5, hence;
f(x) = –3.8x + 6
f(-7.5) = -3.8(-7.5) + 6
f(-7.5) = 28.5 + 6
f(-7.5) = 34.5
Hence the value of x the function when x = -7.5 is 34.5
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A + E + N = 122
E = 2N
A = 7 + E....A = 7 + 2N
(7 + 2N) + 2N + N = 122
5N + 7 = 122
5N = 122 - 7
5N = 115
N = 115/5
N = 23 <== North America
E = 2N
E = 2(23)
E = 46 <== Europe
A = 7 + E
A = 7 + 46
A = 53 <=== Africa
Answer:
exactly 10: 8.33 %
at least 10: 16.66 %
Step-by-step explanation:
first we have to see the amount of favorable results
4+6 = 10
6+4 =10
5+5=10
then we have to see the amount of possible results
Each dice has 6 faces and there are 2 dice, so if we make 6 ^ 2 we will get the number of possible combinations
6^2 =
6*6 = 36
Now we only do the number of favorable results on the possible results and multiply it by 100 and obtain the probability
100*3/36 = 8.33 %
we do the same for those greater than or equal to 10
4+6 = 10
6+4 = 10
5+5 = 10
6+5 = 11
5+6 = 11
6+6 = 12
100*6/36 = 16.66 %
Answer:
f^(-1)(x) = -3x/(3x-3)
Step-by-step explanation:
1) replace f(x) by y
● y = 3x/(5x+3)
2) exchange x and y
● y = 3x/(5x+3)
● x = 3y / (3y +3)
3) solve for y
● x = 3y / (3y +3)
● x (3y +3) = 3y
● 3xy + 3x = 3y
● 3xy - 3y = -3x
● y (3x - 3) = -3x
● y = -3x /(3x-3)
4) replace y with f^(-1)(x)
● y = -3x/(3x-3)
● f^(-1)(x) = -3x/(3x-3)
