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givi [52]
2 years ago
12

May got 12 marks out of 20 and Sasha got 14 marks out of 25. Who performed better?

Mathematics
1 answer:
WINSTONCH [101]2 years ago
6 0

Answer:

May performed better

Step-by-step explanation:

To compare their marks change their scores to percentages.

To change a fraction to a percent multiply by 100%

\frac{12}{20} × 100% = 0.6 × 100% = 60%

\frac{14}{25} × 100% = 0.56 × 100% = 56%

May performed better with 60%

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<h3>Answers:</h3>
  • A. T <-> U  is a <u>biconditional</u>
  • B. (A & B) v (C & D)  is a <u>disjunction</u>
  • C. R -> ~S  is a <u>conditional</u>
  • D. P & Q   is a <u>conjunction</u>
  • E. ~(R v P)  is a <u>negation</u>

========================================

Explanations:

  • A biconditional is anything in the form A <-> B. This is a compact way of saying (A -> B) & (B -> A). We replace A and B with logical statements.
  • Disjunctions are of the basic form A v B. The "v" basically means "or".
  • Any conditional is of the form "if... then...". For example, "if it rains, then it gets wet outside" is a conditional. In terms of logic symbols, we write A -> B to mean "if A, then B".
  • Conjunctions are whenever we combine two logical statements with an "and" or an ampersand symbol. The basic form is A & B
  • Negations are the complete opposite of the original. If the original is P, then the negation is ~P, which is read as "not P".
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To solve this, I used guess and check.

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