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Do you always have to invert the second fraction when dividing?
No. Only if you want to get the correct answer.
Are the bases always parallel?
No. They are parallel only in RIGHT prisms or RIGHT cylinders. However, they are almost always parallel for school level questions.
Can you use one question mark for two consecutive questions?
Only if the two questions are in the one sentence.
How many questions do you need to get right for at least a score of 100 when answering 126 out of 126 gets a score of 176 answering 0 gets you 0 and answering 63 gets 88?
Assuming every question has the same score, then: if 126 questions correct score 176, each question scores 176/126 points With 0 correct this gives a score of 0 × 176/126 points With 63 correct this gives a score of 63 × 176/126 = 88 (as given). To score at least 100: number of questions × 176/126 ≥ 100 → number of questions ≥ 100 × 126/176 = 71 13/22 Assuming you cannot answer part of a question to get the mark, you must answer at least 72 questions to get a score of 72 × 176/126 = 100 4/7 If you were to get only 71 questions right you would score 71 × 176/126 = 99 11/63 which is less than 100. You need to get 72 questions right to get a score of at least 100.
Do you always simplify fractions?
not always,only when you need to
