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-BARSIC- [3]
3 years ago
11

Can someone explain this to me please step by step

Mathematics
1 answer:
avanturin [10]3 years ago
4 0

Answer:

10 + 10 = 21

dont ask how

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The probability that a high school student in in the marching band is 0.47. The probability that a student plays a varsity sport
IrinaK [193]

The probability that a high school student in in the marching band is 0.47

so, P(M)=0.47

The probability that a student plays a varsity sport is 0.32

so, P(V)=0.32

the probability that a student is in the marching band and plays a varsity sport is 0.24

so, we get

P(M∩V)=0.24

a student plays a varsity sport if we know she is in the marching band

so,

P(V|M)=(P(V∩M))/(P(M))

now, we can plug values

and we get

P(V|M)=\frac{0.24}{0.47}

P(V|M)=0.51063

So,

the probability that a student plays a varsity sport if we know she is in the marching band is 0.51063......Answer

8 0
3 years ago
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twice the number of donuts was only 6 less than 24 times the number of cream puffs. 10 times the number of cream puffs was only
Karolina [17]

donuts and cream puffs were  45 & 4 respectively !

<u>Step-by-step explanation:</u>

Here we have , twice the number of donuts was only 6 less than 24 times the number of cream puffs. 10 times the number of cream puffs was only 5 less than the number of donuts   We need to find how many donuts and cream puffs were there . Let's find out:

Let number of donuts and cream puffs are x & y respectively ! So ,

  • twice the number of donuts was only 6 less than 24 times the number of cream puffs

According to this statement equation is :

⇒ 2x=24y-6

⇒ x=12y-3            ................(1)

  • 10 times the number of cream puffs was only 5 less than the number of donuts

According to this statement equation is :

⇒ 10y= x-5

⇒ x=10y+5               ................(2)

Equation (1) & (2) :

⇒ 12y-3=10y+5

⇒ 2y=8

⇒ y=4

Putting  y=4 in  x=12y-3  :

⇒ x = 12(4)-3

⇒ x = 45

Therefore , donuts and cream puffs were  45 & 4 respectively !

7 0
3 years ago
Find the radius of the circle. <br><br>6(x – 3)2 + 6(y + 7)2 = 216​
Fantom [35]

Answer:

radius=6

Step-by-step explanation:

7 0
3 years ago
The table shows the Webster family’s monthly expenses for the first three months of the year. They are $2,687.44, $2,613.09, and
zloy xaker [14]

8109.17 that is the answer if u add it

6 0
3 years ago
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(8x^3 - x) - (10x - 5x^2 - 3x^3) <br> Show your work.
sergeinik [125]

Let's simplify step-by-step.
8
x
3
−
x
−
(
10
x
−
5
x
2
−
3
x
3
)
Distribute the Negative Sign:
=
8
x
3
−
x
+
−
1
(
10
x
−
5
x
2
−
3
x
3
)
=
8
x
3
+
−
x
+
−
1
(
10
x
)
+
−
1
(
−
5
x
2
)
+
−
1
(
−
3
x
3
)
=
8
x
3
+
−
x
+
−
10
x
+
5
x
2
+
3
x
3
Combine Like Terms:
=
8
x
3
+
−
x
+
−
10
x
+
5
x
2
+
3
x
3
=
(
8
x
3
+
3
x
3
)
+
(
5
x
2
)
+
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−
x
+
−
10
x
)
=
11
x
3
+
5
x
2
+
−
11
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Answer:
=
11
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3
+
5
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2
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11
x


Brainliest Please:)
6 0
3 years ago
Read 2 more answers
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