a*****g
发帖数: 1320 | 1 A triangle has two sides measuring 4 and 6, respectively
the greatest possible area of the triangle is 12. why?
another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
items are removed from the bag
which probability is greater?
a. the probability that both items are brownies
b. the probability that one item is a cookie and the other is a doughnut
thanks a lot!!! | B******1
发帖数: 9094 | 2 These are so simple.
For the first: 4*6/2 = 12. If you use one side as a base, the biggest height
on that base is 6.
For the second:
a) (5/15)*(4/14)
b) (4/15)*(6/14)
Since 20 is less than 24, b) is greeter.
【在 a*****g 的大作中提到】
: A triangle has two sides measuring 4 and 6, respectively
: the greatest possible area of the triangle is 12. why?
: another one: a box contains 4 cookies, 5 brownies, and 6 doughnuts. two
: items are removed from the bag
: which probability is greater?
: a. the probability that both items are brownies
: b. the probability that one item is a cookie and the other is a doughnut
: thanks a lot!!!
| a*****g
发帖数: 1320 | 3 谢谢，回头发包子。
height
【在 B******1 的大作中提到】
: These are so simple.
: For the first: 4*6/2 = 12. If you use one side as a base, the biggest height
: on that base is 6.
: For the second:
: a) (5/15)*(4/14)
: b) (4/15)*(6/14)
: Since 20 is less than 24, b) is greeter.
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