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dezoksy [38]
3 years ago
9

A group of 8 Trends (5 girls and 3 boys) plans to watch a movie, but they have only 5 tickets. How many different combinations o

f 5 friends could
possibly receive the tickets?
Mathematics
1 answer:
rjkz [21]3 years ago
8 0

Answer:

Given that there are 8 friends (5 girls and 3 boys). We have to select only 5 of them. Those 5 can be girl or boy or combination of both because no such restriction is given.

The options in this case are

All five girls go + 4 girls and 1 boy +3 girls , 2 boys+2 girls , three boys

5C5+ (5C4 * 3C1) + (5C3*3C2) + (5C2*3C3)

=1+5*3 + 10*3 +10*1 = 1+15+30+10 = 56

So the answer would be 56

If thats what your talking about.

Hopefully I was help to you!! <3

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A rectangular solid has sides of 7 cm, 9 cm, and 11 cm. What is its surface area?
otez555 [7]

Answer:

Surface area is, 478 square centimeter

Step-by-step explanation:

Surface area (S)of rectangle is given by:

S = 2(lw+wh+hl)                 .....[1]

where,

l is the length

w is the width

h is the height of the rectangle respectively.

As per the statement:

A rectangular solid has sides of 7 cm, 9 cm, and 11 cm

⇒ l = 7 cm , w = 9 cm and h = 11 cm

Substitute in [1] we have;

S = 2(7 \cdot 9+9 \cdot 11+11 \cdot 7)

⇒S = 2(63+99+77) = 2 \cdot 239 = 478 cm^2

Therefore, the surface area is, 478 square centimeter

7 0
3 years ago
The number of miles Abigail’s boat travels, m, varies directly with the amount of time Abigail spends boating, t. If she spends
kow [346]
Hello, Tennant17!

The model for direct variation is y=kx where k is a constant. 
In this case, y is m and x is t.
So the equation is m=kt
Plug in the values of m and t to find k.

19= k * 2
Solve for k
k= 19/2
k= 9.5

Plug k back into the equation.

m=9.5t

So the answer is:
B. m=9.5t

Hope this helps :)

5 0
3 years ago
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Answer:

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Step-by-step explanation:

3 0
4 years ago
You have a ruler of length 2 and you choose a place to break it using a uniform probability distribution. Let random variable X
Dmitriy789 [7]

Hi!

When you break the rule for the first time, de probability distribution of X is constant in [0, 2], and is zero outside. If the the value obtained is X = a, then the probability distribution of Y (conditioned on X = a) is constaint in interval [0, a], and zero outside. Then the region in the X-Y plane where the joint density is non-zero is the filled triangle  in the figure.

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3 years ago
If F(x)=3x+5 and G(x)=5x+3, mark all true statements.
siniylev [52]

Plug in F(x) to the equation answer and see if it is true or false by plugging it in

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