The two-way table shows information about the subjects studied

Mathematics

1 answer:

son4ous [18]2 years ago

4 0

Answer:

a) 62

b) 31/45

Step-by-step explanation:

a) The table tells you there are 42 males, and 20 more females that study biology.

42 +20 = 62 . . . are male or study biology or both

b) Of the total of 90 people, 62 are male or study biology (or both). The probability that any person is in that category is ...

62/90 = 31/45 = P(male or biology)

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2/3 (5 x 4) ÷ 3 + 6/7 I divided 3/2 is 1.5*(20)=30/3=10+1.16=11.16 is that correct not so good in math

Assoli18 [71]

$\frac{2}{3}(5*4):3+ \frac{6}{7} = \\ \\ \frac{2}{3}*20:3+ \frac{6}{7} = \\ \\ \frac{40}{3}:3+ \frac{6}{7} = \\ \\\frac{40}{9}+ \frac{6}{7}= \\ \\ \frac{40*7+6*9}{7*9}= \\ \\\frac{280+54}{63}= \\ \\ \frac{334}{63} = \\ \\ 5 \frac{19}{63} \ \ \ [as \ a \ mixed \ fraction] \\ \\ \approx 5.3 \ \ \ [as \ a \ decimal\ fraction \ to \ the \ nearest \ tenth]$