90 is the nearest 10. You round up at 5 and above, you round down from 1 to 4.
Your answer is 80. A triangle’s angles add up to 180 degrees. Therefore, you need to subtract 30 and 70 from 180 to find your answer: 180-(30+70)=80 or 180-70-30=80
28 is 35% of
80Convert the percentage (35) into a decimal by dividing it over 100:
Divide 28 over 0.35:
You were on the right track. Here are two ways to go about it.
• By definition of conditional probability,
Pr[A | B] = Pr[A and B] / Pr[B]
Out of the total 100 participants in the survey, there are 18 people that both have a positive attitude and are over 35, so
Pr[positive and over 35] = 18/100
Out of the 100 pariticipants, 40 are over 35, so
Pr[over 35] = 40/100
Then the conditional probability you want is (18/100) / (40/100) = 18/40 = 9/20.
• There are 40 people over 35 in the survey. You want the probability that someone randomly chosen from this group has a positive attitude, of which there are 18. Hence the probability is 18/40 = 9/20.
Answer: Answers and explanations down below.
Step-by-step explanation:
1. 90- 24= 66
<u>m<FCG= 66 degrees</u>
2. 24+31=55
180-55= 125
<u>m<BCD= 125 degrees</u>
3. 90+24=114
<u>m<FCB=114 degrees</u>
4. 90+66=156
<u>m<ACG=156 degrees</u>
