In a school, the ratio of the number of boys to the number of girls in a school is 7 : 5 - if there are 600 students in the scho
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❄ Hi there,
keeping in mind that the sum of complementary angles is 90°,
set up an equation, letting be x –
{and we know that
}
__________
Keeping in mind that a right angle is 90°,
set up an equation, letting be x:
{and we know that
}
❄
22. Alternate angles
23. 4: (
, substitute b with 10 and a with 20 and you get 4.)
24. 0.28: 0.12 + 0.60 = 0.72. Probability is always out of 1, so 1 - 0.72 should give you the probability of losing, which is 0.28.
23. 4: (
24. 0.28: 0.12 + 0.60 = 0.72. Probability is always out of 1, so 1 - 0.72 should give you the probability of losing, which is 0.28.