Cho tứ giác ABCD có C= 60, D= 80, A-B= 10. Tính số đo của A và B
ĐS: A=115, B=105

depending on others is critical to survival. my source is apex!

step-by-step explanation:

what

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation:

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.