aj2869
23.08.2021 •
Mathematics
Think like a mathematician 5 Sofia and Zara are looking at the inequality x > 5. In pairs or small groups, discuss Sofia's and Zara's comments. The inequality x>5 is equivalent to 2x > 10. The inequality x > 5 is equivalent to x-2 > 3 a b How can you show that Sofia and Zara are correct? Write two different inequalities that are equivalent to x > 5. Is it possible to say how many different inequalities there are that are equivalent to r > 5? Explain your answer. Tip Remember that 'equivalent to means 'the same as' or 'equal to'. C С
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Ответ:
The total number of students is 800.
Step-by-step explanation:
Given that in an examination, 40% students passed in Maths only, 30% passed in Science only and 10% students failed in both the subjects, to determine the total number of students if 400 students passed in Science the following calculation must be performed:
100 - 40 - 30 - 10 = 20
20 + 30 = 50
50 = 400
100 = X
100 x 400/50 = X
800 = X
Thus, the total number of students is 800.