The number of points Marco needs to bring his average up to 90% is 15points.
If there's a possible 25 possible points, and Marco has taken 5 quizzes;
Evidently, each quiz has weighs 5 points.
Mathematically;

- 2100 + 500x = 2250 + 450x
x = 3.
Therefore, he needs 5x points = 15 points to bring his average up to 90%.
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Answer:
Place the paranthases around 5-2
Step-by-step explanation:
Answer:
(11+12+17)x = 40x.
Step-by-step explanation:
Rs 3520 is divided in the Ratio 11:12:17 as Rs 968, Rs 1056, Rs 1496. According to the question, we have to divide Rs 3520 in the ratio 11:12:17. Let the common ratio be x. So, total share = (11+12+17)x = 40x.
True is the answer me adding extra words to reach the 20 character minimum okay have a good day❤️
Answer:
The answer is C. A square