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Vikentia [17]
3 years ago
11

In a class of 22 students, 13 have a brother and 15 have a sister. There are 3 students who do not have any siblings. What is th

e probability that a student has a brother given that they do not have a sister?
Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

1/4

Step-by-step explanation:

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A)find mode:2,4,6,8,6,4,2,4,2,4,6,6,4<br>B)If A= {0,1,2,3,4} find n(A)​
Citrus2011 [14]
The answer for the question Mode and number of A is
4 0
3 years ago
What is the length of line segment BC?​
Nezavi [6.7K]

Answer:

d. 10.53 units

Step-by-step explanation:

This question could be answered by Pythagoras Theorem which is :

a^{2} +b^{2} =c^{2} In every triangle c is always the hypotenuse ( which is the longest line in the triangle/ the line where the right angle sign is pointing to )

a or b could be either one of the other lines of the triangle it doesn't matter.

First you find AC which is simply by adding the two 5.2 values which is 10.4 units.

BC can be written as b in our Pythagoras equation and if you first substitute it you will have:

10.4^{2} + b^{2} = 14.8^{2}

To find b you rearrange everything to the other side except b

b=\sqrt{14.8^{2}-10.4^{2}  }

And if you type that in the calculator you get

BC= 10.53 units (2 decimal place)

Hope it is right, and ask any questions if unsure :)))

5 0
3 years ago
What is the kinetic energy of a 54 kg mass traveling at 15 meters per second?
kobusy [5.1K]

Given that an object with a mass of 54kg travels at 15m/s^2, determine the kinetic energy of the object.

KE =  0.5 x mv^2

M (mass) = 54kg

V (velocity) = 15m/s^2

Then, we plug the values in.

KE =  0.5 x 54(15^2)

Now, we solve.

KE = 0.5 x 54(225)

KE = 0.5 x 12150

KE = 6075

Now, that we have solved the formula, we can see that the kinetic energy of the object is 6,075J.

Thus, the kinetic energy of the object is 6,075J.

5 0
3 years ago
Helpppppppppppppppp
garik1379 [7]

Answer:

tan(46)=x/17

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4 0
3 years ago
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6+4/a+b/3 when a=4 and b=3
Ann [662]

Answer:

8

Step-by-step explanation:

5 0
3 years ago
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