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scZoUnD [109]
3 years ago
7

Find the angle of arc BC

Mathematics
1 answer:
amid [387]3 years ago
6 0

Answer:

   96°

Step-by-step explanation:

The measure of arc EC is twice the measure of ∠DEC, so is ...

  arc EC = 2×68° = 136°

The measure of arc BC is found from the sum of arcs around a circle.

  BC +CE +EB = 360° = BC +136° +128°

  BC = 96° . . . . . subtract 264°

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Will correctly calculated 45 ÷ 6 as 7.5. How can he find 4,500 ÷ 6 without dividing?
Anastasy [175]
Add the zeros on to 7.5 to which you would move the decimal and it should be like this 750.0 or 750
5 0
3 years ago
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Tresset [83]

Answer:

264cm^3

Step-by-step explanation:

8 × 5 × 5 = 200

8 × 1 × 8 = 64

200 + 64 = 264

7 0
3 years ago
Read 2 more answers
Bob's exam score was 2.17 standard deviations above the mean. the exam was taken by 200 students. assuming a normal distribution
Lemur [1.5K]

The <em><u>correct answer</u></em> is:

1.5% of the scores, or 3 people.

Explanation:

A z-score tells the number of standard deviations a data point is from the mean. Since Bob's score is 2.17 standard deviations above the mean, that means his z-score is 2.17.

Using a z-table, we find the probability that a score would be to the left of, or less than, this value. In the table, this is 0.9850. However, we are interested in the number of people that scored <em>higher</em> than Bob. This means we subtract this from 1:

1-0.9850 = 0.015.

This is the percentage of people that scored higher than Bob. To convert to a percent, multiply by 100:

0.015*100 = 1.5.

To find the number of people that scored higher than Bob, take 1.5% of 200:

0.015(200) = 3.

3 0
3 years ago
Read 2 more answers
Adam can do a job in 10 days, while brenda takes 15 days to do it. after brenda works alone for 3 days, adam and brenda work tog
Otrada [13]
= [1- (3/15)]/(1/10 + 1/15)
= (4/5)÷(1/6)
= 24/5
= 4 4/5
7 0
3 years ago
Eli’s class held a fund raising event last month. The class’s expenses were+5.75, +4.75, and +3.75. The amounts of money the cla
Step2247 [10]

The different orders of computation is +56.6

Based on the funding in Eli's class;

The class’s expenses were +5.75, +4.75, and +3.75

Total expenses = +5.75 +4.75 +3.75

Total expenses = +14.25

If the amounts of money the class raised were +13.50, +24.70, +13.15, and +19.50, the total raised is expressed as:

Total money raised = 13.50 +24.70 + 13.15 +19.50

Total money raised = +70.85

Difference in computations = +70.85 - 14.25

Difference in computations = +56.6

Hence the different orders of computation is +56.6

Learn more here: brainly.com/question/21002308

4 0
3 years ago
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