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Mathematics 7 Online
OpenStudy (jake124):

survey showed that 36 of car owners prefer two door cars 52 prefer four door cars and 12 have no preference you ask 300 people how many do u think will prefer the two door cars 108 people 192 people 253 people 300 people help please

OpenStudy (zzr0ck3r):

so 36% like two door cars. What is 36% of 300?

OpenStudy (jake124):

108*

OpenStudy (jake124):

can i ask one more ? @zzr0ck3r

OpenStudy (zzr0ck3r):

sure

OpenStudy (jake124):

a ice cream shop offers 5 different flavors and 12 different toppings how many choices are possible for a single serving of ice cream with one topping 18 choices 22 choices 46 choices 60 choices

OpenStudy (zzr0ck3r):

for each flavor there are 12 toppings. so how many total?

OpenStudy (jake124):

60 ?

OpenStudy (zzr0ck3r):

correct

OpenStudy (jake124):

can i ask one more and thats it

OpenStudy (zzr0ck3r):

sure

OpenStudy (jake124):

tamara likes to mix and match her 4 scarves 3 pairs of gloves and 2 hats the colors are in the table on monday she randomly picks out a scarf hat and a pair of gloves what is the probability of tamara choosing a pair of brown gloves and a red hat 1/4 1/8 1/10 or 1/6

OpenStudy (jake124):

OpenStudy (zzr0ck3r):

are they mutually exclusive?

OpenStudy (zzr0ck3r):

does how you pick the scarf have anything to do with how you pick the other items? (remember random)

OpenStudy (jake124):

no

OpenStudy (jake124):

or i think

OpenStudy (zzr0ck3r):

i meant independent i think

OpenStudy (jake124):

oh no

OpenStudy (zzr0ck3r):

then you multiply the probabilities. what is the probability she chooses a brown gloves?

OpenStudy (jake124):

can you give me a hint cs im confused

OpenStudy (zzr0ck3r):

what is the chance you get heads if you flip a coin?

OpenStudy (zzr0ck3r):

or probability ?

OpenStudy (jake124):

if you flip it on tails

OpenStudy (zzr0ck3r):

the chance that you grab brown gloves in 1/3, the chance that you get a red hat is 1/2. since they are independent of each other, we multiply them together. Just like a coin, there is 1/2 chance you get heads, there is 1/2*1/2=1/4 chance you do it twice in a row and a 1/8th chance you get 3 heads in a row

OpenStudy (jake124):

thanks you so much

OpenStudy (zzr0ck3r):

np

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