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choli [55]
3 years ago
13

What quantity will correctly complete the formula? arc length = ?/360circumference

Mathematics
1 answer:
jeka57 [31]3 years ago
8 0
? should be the angle measure of the arc.
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An instructor gives a class a set of 10 problems and says that the nal exam will consist of a random selection of 5 of the probl
sweet-ann [11.9K]

Answer:

probability that he or she will answer at least 4 problems correctly = 0.5

Step-by-step explanation:

probability that he or she will answer at least 4 problems correctly is given as;

P (at least 4 correctly) = P (exactly 4 correctly) + P (all 5 correctly)

Since there are 10 problems. 4 is from the 7 problems chosen and 1 is from the 3 problems we can't figure out. Thus, P(exactly 4 correctly) = 7C4 x 3C1

Thus, P (at least 4 correctly) = [ (7C4) x (3C1) ] / (10C5)] + [(7C5)/(10C5)]

= [(35 x3)/252 ] + [21/252]

= [ 105/252 ] + [ 21/252 ]

= 126 / 252

= 0.5

8 0
3 years ago
(2x-20) + 86 what is the the value of x
julsineya [31]
When (2x-20)+86=0
2x-20=-86
2x=-46
x=-23
6 0
3 years ago
the area of a rectangular picture frame is 30 3/1 square inches. The length of the frame is 6 1/2 inches. Find the width of the
Rudiy27
I hope this helps you




Area=length ×width



30 1/3=30.3+1/3=91/3


6 1/2=6.2+1/2=13/2



91/3=13/2.width


width =7.13.2/3.13


width =14/3


width = 4 2/3
3 0
3 years ago
The original price of a pair of shoes is $42. The sale price is 20% off the original price. What is the amount off the original
GREYUIT [131]

Answer:

a) What is the amount off the original price?

= $8.4

b) What is the new price for the pair of shoes?

= $33.6

Step-by-step explanation:

a) What is the amount off the original price?

We are told that:

The sale price is 20% off the original price.

Original price = $42

Hence:

$42 × 20%

$42 × 20/100

= $8.4

b) What is the new price for the pair of shoes?

The new price =

0riginal price - Amount off the original price

= $42 - $8.4

= $33.6

The original price = $33.6

8 0
3 years ago
What's the improper fraction for 3 and 5/6ths?
wlad13 [49]
The correct answer is 23/6. Hope this helps.
5 0
3 years ago
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