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timofeeve [1]
1 year ago
13

Find the area of a circular sector in cm² with angle 15° if the length of the intercepted arc is pi/2 cm

Mathematics
1 answer:
UkoKoshka [18]1 year ago
3 0

Answer:

0.52cm2

Step-by-step explanation:

l of Arc =tita/360×2πr

15/360×2×22/7×2

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If two cards are drawn out of a deck WITH replacement, what's the probability that you draw a red card and then an Ace? ** Remem
katen-ka-za [31]

Answer:

Step-by-step explanation:

The probability of drawing a red card is 1/2, since half of the cards in a deck are red. The probability of drawing an ace from a deck is 1/13, since there is an equal chance to pick any of the 13 numbers.

P(red card and ace)= P(red card)*P(ace)=1/2 * 1/13=1/26

4 0
3 years ago
Which word correctly describes the pentagon? A. equilateral B. equiangular C. regular
elixir [45]
I think it is b im not sure 
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Which system of linear equations appears to have a solution of (-1,4)?
daser333 [38]

Answer:

The 3rd graph represents the point (-1, 4) as the solution to the system of linear equations.

The correct graph is also attached below.

Step-by-step explanation:

We know when two lines meet at a certain point, the point where they meet is called the point of intersection.

We also know that the point of intersection of two lines is termed as the solution of the system of linear equations.

We are given the point (-1, 4) as the solution of the system of linear equations.

It means the two lines meet at x = -1, and y = 4.

In other words,

(x, y) = (-1, 4) is called the point of intersection of the system of linear equations.

Now, if we closely check the graph of these two lines, we can easily figure out that the 3rd from the right side is the graph that represents the solution to the system of linear equations.

The 3rd graph indicates that the two lines meet at x = -1, and y = 4.

Hence, the point of intersection of 3rd graph is:

(x, y) = (-1, 4)

Therefore, the 3rd graph represents the point (-1, 4) as the solution to the system of linear equations.

The correct graph is also attached below.

7 0
2 years ago
Pls help me ill give brainliest <br><br> Do all 3 for brainliest
Gwar [14]

Answer:

13. Slope: -3

14. D ; y = 18

15. ?

Step-by-step explanation:

13. 4 - 1 = 3

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3/-9 = -3

4 0
2 years ago
Cylinder has a height of 14 centimeters and its circle bases have a radius of 10 centimeters. find the surface area of the cylin
Alja [10]
200 plus 140 is 300 
1400 plus 140 is 1540
200 plus 280 is 480
and 2800 plus 280 3080
4 0
3 years ago
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