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# I need help..

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i am confused...

LaughingFace  Apr 14, 2018
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#1
+6943
+1

1.

num of students that like TV but not video games  =  num of students that like TV - num of students that like both TV and video games

num of students that like TV but not video games  =  34 - 8

num of students that like TV but not video games  =  26

hectictar  Apr 14, 2018
#2
+6943
+1

2.   Let's look at each pair of numbers.

Could  (4, 6)  represent event A?

Is  4 + 6  greater than  7  ?  yes

Is  4 + 6  a multiple of  4  ?  no

Therefore (4, 6) could not represent event A.

Could  (4, 3)  represent event A?

Is  4 + 3  greater than  7  ?  no

Is  4 + 3  a multiple of  4  ?  no

Therefore  (4, 3)  could not represent event A.

Could  (6, 6)  represent event A?

Is  6 + 6  greater than  7  ?  yes

Is  6 + 6  a multiple of  4  ?  yes

Therefore  (6, 6)  could represent event A.

Could  (5, 4)  represent event A?

Is  5 + 4  greater than  7  ?  yes

Is  5 + 4  a multiple of  4  ?  no

Therefore  (5, 4)  could not represent event A.

Could  (3, 5)  represent event A?

Is  3 + 5  greater than  7  ?  yes

Is  3 + 5  a multiple of  4  ?  yes

Therefore  (3, 5)  could represent event A.

Could  (1, 5)  represent event A?

Is  1 + 5  greater than  7  ?  no

Is  1 + 5  a multiple of  4  ?  no

Therefore (1, 5) could not represent event A.

hectictar  Apr 14, 2018
#3
+85726
+2

Last one

P(Red )  =  25 / ( 25 + 95)  = 25/120

P(Blue)  =  95 / 120

These events are complementary because  25/120 + 95 / 120  =  120 / 120  =  1

CPhill  Apr 15, 2018

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