Answer:
19
Step-by-step explanation:
Solving,
4x-5 = 27 add five to both sides
4x =32 divide by 4
x = 8 = blue marbles
3x-5 = 19 = red marbles.
To solve this problem you must apply the proccedure shown below:
1. You have the following functions given in the problem above:

and

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2. You have that g(x) times f(x) can be written as g(x)*f(x). Therefore, you must multiply f(x) * g(x), as following:
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3. Applying the distributive property, you have:
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The answer is:
Answer:
84 is the highest possible course average
Step-by-step explanation:
Total number of examinations = 5
Average = sum of scores in each examination/total number of examinations
Let the score for the last examination be x.
Average = (66+78+94+83+x)/5 = y
5y = 321+x
x = 5y -321
If y = 6, x = 5×6 -321 =-291.the student cannot score -291
If y = 80, x = 5×80 -321 =79.he can still score higher
If If y = 84, x = 5×84 -321 =99.This would be the highest possible course average after the last examination.
If y= 100
The average cannot be 100 as student cannot score 179(maximum score is 100)
45.
12/18 = 8/x <=> 2/3 = 8/x <=> x = (3*8)/2 = 12;