A) The rational equation that represents the given situation in the question is;<u><em> (21 + x) = 0.9(25 + x)</em></u>
B) Solving the equation gives the number of points needed to bring his average to 90% as; <u><em>15 points</em></u>
We are told that he earned a total of 21 out of 25 possible points.
A) Now, if he has a perfect score on the next several quizzes, it means the number of points which we will call x that he needs to bring his average up to 90% is calculated from the rational equation;
(21 + x)/(25 + x) = 90%
⇒ (21 + x)/(25 + x) = 0.9
⇒ (21 + x) = 0.9(25 + x)
B) To find the number of points, let us solve the equation in A above to get;
(21 + x) = 0.9(25 + x)
Using distributive property on the right hand side, we have;
21 + x = 0.9(25) + 0.9x
21 + x = 22.5 + 0.9x
Using subtraction property of equality;
x - 0.9x = 22.5 - 21
0.1x = 1.5
x = 1.5/0.1
x = 15 points
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The answer is as follows: 1,800,000,000
Answer:
Brand B
Step-by-step explanation:
Divide to get the answers.
Brand A: 4 bags for $11.92
11.92/4 = 2.98
Brand B: 6 bags for $17.34
17.34/6 = 2.89
Once you are done dividing, the answer that you get will be the individual price per bags.
So, the answer is: Brand B has cheaper price.
Answer:
m = 134 miles
Step-by-step explanation:
f(m) = 16.95 + 0.92m
140.23 = 16.95 + 0.92m
0.92m = 140.23 - 16.95
0.92m = 123.28
m = 123.28/0.92
m = 134 miles
i beleive that the answer is 96 because i think that you have to multiply 8,6,and 2 together but dont trust me because that seems to easy