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kifflom [539]
3 years ago
14

A circle has a radius of 3. An arc in this circle has a central angle of 20. What is the length of the arc?

Mathematics
2 answers:
seropon [69]3 years ago
7 0

Answer:

Step-by-step explanation:

1/3 pi

Ede4ka [16]3 years ago
5 0
Circumference of whole circle =
\pi \times 3 \times 2
360÷20=18
\frac{1}{18}  \times 6\pi = \frac{1}{3} \pi
hence length of arc = 1/3 pi
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Point A is located at (1, 5), and point A′ is located at (-2, 1). What is the distance from B to B′ ?
babunello [35]

Answer:

The distance between B to B' is 5

Step-by-step explanation:

Using the distance lie formula:

Let's say (x2, y2) is (-2,1) and (x1, y1) is (1,5)

\sqrt{(x2-x1)^{2} +(y2-y1)^{2} } \\\sqrt{(-2-1)^{2} +(1-5)^{2} } \\\sqrt{(-3)^{2} +(-4)^{2} } \\\sqrt{9+16}\\\sqrt{25}    \\= 5

The distance between the original and new coordinates would be the same, therefore the two will remain a distance of 5.

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2 years ago
Beth is making fruit salad. She adds 4 grapes for every 2 strawberries. If she uses 14 strawberries, how many grapes will she us
kykrilka [37]

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28 grapes

Step-by-step explanation:

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3 years ago
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90%

Step-by-step explanation:

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Jelani has twice as much money on his subway pass as Alexis. If they both add $20 to their passes, Jelani will have 1.5 times as
Klio2033 [76]

Answer:

x = 2x

x + 20 = 2x + 20

And,

1.5(x + 20) = 2x + 20

x = 20 i.e. Alexis

And, Jelani be 40

Step-by-step explanation:

Given that

Jelani has twice as much as Alexis

And, both can added $20

Jelani will have 1.5 times as much on his pass on Alexis

We need to write an equation also the amount does Jelani and Alexis have

So,

Let us assume the alexis be x

And, Jelani be 2x

Now

x = 2x

x + 20 = 2x + 20

And,

1.5(x + 20) = 2x + 20

1.5x + 30 = 2x + 20

-0.5x = -10

x = 20 i.e. Alexis

And, Jelani be 40

4 0
3 years ago
I got most of them but I need help on those 3
Vadim26 [7]
Using Pythagoras:-

x^2  = 6^2 + (sqrt18)^2
       = 36 + 18 = 54

x = sqrt54  =  3 sqrt6
3 0
3 years ago
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