3 years ago

The angle measures 42°, 50°, 130°, and 138° are written on slips of paper. You choose two slips of paper at random.

Mathematics

2 answers:

ratelena [41]3 years ago

5 0

Answer:

the chances are 1/4

Step-by-step explanation:

you have 1/4 chance you will pick the two angles that make 180 degrees or supplementary

topjm [15]3 years ago

4 0

Answer:

Step-by-step explanation:

<u>Combination of pairs of paper slips:</u>

4C2 = 4!/(2*2) = 6

A pair of 50 with 130 and 42 with 138 are the two pairs of supplementary angles.

<u>The probability is:</u>

P(supplementary pair) = 2/6 = 1/3

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