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Alika [10]
3 years ago
7

Help me as soo as possible please, the M in Mbc stands for “angle”

Mathematics
1 answer:
JulijaS [17]3 years ago
8 0

Answer:

Step-by-step explanation:

Given is a picture of circle with angle

BOC =7x-11

Also angle of arc BC = angle BOC = 3x+53

Since both are the same equate the two

7x-11=3x+534x=64x=16

Now substitute this x value in any one of 3x+53 or 7x-11

Angle COB = angle BOC = 3x+53

= 48+53 = 101 degrees

-------------------------

To find length of arc

Central angle = 101

Hence arc lengh =\frac{101}{360} 2(\pi r)\\=2\frac{101}{360}(3.14)(5)\\=8.81

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A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time).
likoan [24]

Answer:

(a). 72.9%.

(b). 13.6 hr.

Step-by-step explanation:

So, we are given the following data or parameters or information which is going to assist us in solving this question/problem;

=> "A welder produces 7 welded assemblies during the first day on a new job, and the seventh assembly takes 45 minutes (unit time). "

=> The worker produces 10 welded assemblies on the second day, and the 10th assembly on the second day takes 30 minutes"

So, we will be making use of the Crawford learning curve model.

T(7) + 10 = T (17) = 30 min.

T(7) = T1(7)^b = 45.

T(17 ) = T1(17)^b = 30.

(T1) = 45/7^b = 30/17^b.

45/30 = 7^b/17^b = (7/17)^b.

1.5 = (0.41177)^b.

ln 1.5 = b ln 0.41177.

0.40547 = -0.8873 b.

b = - 0.45696.

=> 2^ -0.45696 = 0.7285.

= 72.9%.

(b). T1= 45/7^ - 045696 = 109.5 hr.

V(TT)(17) = 109.5 {(17.51^ - 0.45696 – 0.51^ - 0.45696) / (1 - 0.45696)} .

V(TT) (17) = 109.5 {(4.7317 - 0.6863) / 0.54304} .

= 815.7 min .

= 13.595 hr.

8 0
4 years ago
Lannister checks out 6 set of books from the library each set has the same number of books she reads 7 of the books and she has
fgiga [73]

Answer:

3

Step-by-step explanation:

Lannister checks out 6 sets of book

Each set had the same number of books

She reads 7 books and has 11 more to go

Therefore the number of books in each set can be calculated as follows

= 11+7

= 18

18/6

= 3

Hence there are 3 books in each set

6 0
3 years ago
Y= kx+m <br><br> Make x the subject
Ilia_Sergeevich [38]
Kx=y-m
x=(y-m)/k
Note that this is also standard linear form, x=y/k-m/k where slope=1/k and x intercept is -m/k.
7 0
3 years ago
-3(-5)(-4)<br><br> i need help
tamaranim1 [39]

Answer:

If you are asking -3 times -5 times -4, then the answer -60

Step-by-step explanation:

-3*-5=15

15*-4=-60

5 0
3 years ago
Read 2 more answers
How do you factor X^2 +7X +12?
horsena [70]

Your answer is going to be

(×+4) times (×+3)

Hope that helps you.

4 0
3 years ago
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