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AfilCa [17]
3 years ago
9

Are we supposed to be using sin? Actually, how do you even go about solving this problem?

Mathematics
1 answer:
Pavel [41]3 years ago
8 0

Answer:

Step-by-step explanation:

let the distance between the center of small circle and the angle be x

\frac{2}{x}=\frac{4}{x+2+4}

                    2x+12=4x

                            x=6

∴sin(\frac{\alpha }{2})=\frac{2}{6}

        \frac{\alpha }{2}=19.47122063

                                               α=38.94244127

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Please answer this correctly
AleksandrR [38]

Answer:

629

Step-by-step explanation:

l x w

25x14

4x7

12x18

5x7

629

6 0
3 years ago
What is the percentage of 18/20
labwork [276]
18/20 is 90%

You can use a calculator to divide 18 and 20 and you will get 0.9 which is 90%

Or. simplify by dividing the top and bottom by 2, to get 9/10 which is still 90%

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7 0
3 years ago
Read 2 more answers
Eduardo, Sarah, Maria, Jim, and Tyrone have all been invited to a dinner party. They arrive randomly and each person arrives at
Elena L [17]

Answer:

a. 120

b. 6

c. 0.05

Step-by-step explanation:

a) The ways Eduardo, Sarah, Maria, Jim, and Tyrone can arrive to the party is

5! = 5×4×3×2×1 = 120

The logic behind it is

  • 5 different people can arrive first, after that
  • 4 different people can arrive second, when first and second arrived is known,
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b) Using the same logic, when first and last arrived is known, there is

3!=3×2×1=6 ways they can arrive in this case.

c)  The probability that Eduardo will arrive first and Tyrone last is

the division of the ways Eduardo arrive first and Tyrone ​last by the ways 5 people can arrive \frac{6}{120} =0.05

7 0
4 years ago
If DE = 11 and EH = 8, find DF. Round your answer to the tenths place
Nina [5.8K]
114

Just use the Pythagorean theorem and then multiply by 2 to find answer. See picture to see how I did it.

6 0
3 years ago
What is 2x/3 - 4 =x ?
Inessa [10]

Step-by-step explanation:

2x/3 -4 = x

multiply both side by 3

2x - 12 = 3x

-x = 12

x = -12

3 0
3 years ago
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