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Law Incorporation [45]
3 years ago
9

In a class of 7 students there are 4 that play soccer.

Mathematics
1 answer:
Anton [14]3 years ago
4 0

Answer:

Step-by-step explanation:

The total number of ways to draw 3 students is 7*6*5 = 210

Order does not matter. There are 3 students that don't play soccer.

P(3 don't play soccer) = 3*2 * 1 / 210 = 1/35 = 0.02857

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Which relation is a function?
xz_007 [3.2K]

Answer:

I see this

"Which relation is a function?

A {(-3,4),(-3,8),(6,8)}

B {(6,4),(-3,8),(6,8)}

C {(-3,4),(3,-8),(3,8)}

D {(-3,4),(3,5),(-3,8)}"

So the answer is none of these.

Please make sure you have the correct problem.

Step-by-step explanation:

A set of points is a function if you have all your x's are different.  That is, all the x's must be distinct. There can be no value of x that appears more than once.

If you look at choice A, this is not a function because the first two points share the same x, which is -3.

Choice B is not a function because the first and last point share the same x, which is 6.

Choice C is not a function because the last two points share the same x, which is 3.

Choice D is not a function because the first and last choice share the same x, which is -3.

None of your choices show a function.

If you don't have that choice you might want to verify you written the problem correctly.

This is what I see:

"Which relation is a function?

A {(-3,4),(-3,8),(6,8)}

B {(6,4),(-3,8),(6,8)}

C {(-3,4),(3,-8),(3,8)}

D {(-3,4),(3,5),(-3,8)}"

7 0
3 years ago
P = <br> Ok ty please please
Mars2501 [29]

Answer:

p = -15

Step-by-step explanation:

-2 = (p+9)/3 multiply both sides by 3 to get rid of fraction

-6 = p + 9 subtract 9 from both sides

-15 = p

5 0
3 years ago
What algebraic expression represents the phase “two times the quantity of a number minus 12”
MakcuM [25]

Answer:

2(n-12)

Step-by-step explanation:

3 0
3 years ago
8/(-4)+7<br><br><br><br> help LMFO <br> and explain
Vilka [71]

Answer:

5

Step-by-step explanation:

reminder of rules for division

• If signs are the same then positive result

• If signs are different the negative result

\frac{8}{-4} + 7 ( signs of division are different )

= - 2 + 7

= 5

7 0
3 years ago
Read 2 more answers
Julio has $3.30 left from his allowance. He
creativ13 [48]

Answer:

6 pencils

Step-by-step explanation:

divide $3.30 by $0.55 and you get 6.

7 0
3 years ago
Read 2 more answers
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