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DaniilM [7]
2 years ago
6

What is the measure of the arc in the picture above? I will make BRAINLIEST !

Mathematics
1 answer:
boyakko [2]2 years ago
6 0

Answer:

9.42 km

Step-by-step explanation:

Measure of the arc

=  \frac{ \theta}{360 \degree}  \times 2\pi r \\  \\ =  \frac{45 \degree}{360 \degree}  \times 2 \times 3.14 \times 12 \\  \\  =  \frac{1}{8}  \times 75.36 \\  \\  = 9.42 \: km

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The sum of 60 and 30 is divided by 10 and the difference of quotient and 3 is divided by 2​
almond37 [142]

Answer:

Final result is 3.

Step-by-step explanation:

Quotient = (60 + 30) / 10

= 90/10

= 9.

Difference of quotient and 3

= 9 - 3

= 6

6 / 2 = 3.

8 0
3 years ago
Please help due in 5 minutes !
Alexxx [7]
It’s 8:1 hope this help
4 0
3 years ago
It is assumed that the test results for a class follow a normal distribution with a mean of 78 and a standard deviation of 36. I
HACTEHA [7]

Answer:

0.7143

- You know the minimum possible grade of the student

- You want to find out the probability that that grade which is greater than 72 is also greater than 84

- Expect the answer to be 0.7143

- The explanation/steps is given below

- The answer seems (and is) reasonable. You only created a new lower limit.

Step-by-step explanation:

Distribution Type: Normal

Mean: 78

Standard deviation: 36

Range of marks: [78 - 36], [78 + 36]  = [42 to 114]

If you know that a student's grade is greater than 72, what is the probability that it's greater than 84?

In this case, the full probability level is between 72 and the upper limit of 114 (instead of between 42 and 114). First, find the fraction of this probability.

[114 - 72] ÷ [114 - 42]  = 42/72  = 0.5833

So, the probability of a student's mark falling between 72 and 114 is 0.5833.

Now making this a whole interval, 114 - 72 = 42

What fraction of this interval of 42 will bear marks between 84 and 114?

[114 - 84]  = 30

30/42  = 0.7143

Because of the first part of the question "If you know (are sure) that a student's grade is greater than 72...", your answer stops at 0.7143, since 72 was used as the lower limit.

8 0
2 years ago
Round 8.157 to the nearest hundredth.
Rzqust [24]

Answer:

8.16

Step-by-step explanation:

hundredth means two decimal places. since 7 is greater than 5, we have to add 1 to 5 which makes it 6

3 0
3 years ago
Read 2 more answers
Solve for x please show work... i will give you brainliest
Ksenya-84 [330]

Answer:

82°

Step-by-step explanation:

total wine of quadrilateral=360°

130+ 46+ 102 +x =360

x=360- 278

x=82°

5 0
2 years ago
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