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Elina [12.6K]
3 years ago
8

Select the correct answer.

Mathematics
1 answer:
MrRa [10]3 years ago
7 0

Answer:a

Step-by-step explanation:

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(a) How many ways are there to arrange 3 people in a line (order matters) using a group of 5 people?
mart [117]

Answer:

60.

Step-by-step explanation:

This is a permutation exercise because order matters. The formula is n!/(n-r)!. In this case n=5 and r=3 so,

5!/(5-3)! = 5!/2! = 5!/2 = (5*4*3*2*1)/2 we can simplify the 2 and obtain 5*4*3= 60.

7 0
3 years ago
Calculate the area of a circle with a radius of 16.9 centimeters.
Marina CMI [18]

Answer:

I'd say 897.27cm². That's the vlosest answer that I see.

5 0
3 years ago
(b) What per cent is1/2<br>dozen of one score?<br>​
aleksandr82 [10.1K]

Answer:

1/2 dozen of one score is 30%.

Step-by-step explanation:

As we know that 1 dozen = 12 units.

1/2 dozen = 1/2 times 12=6 units

1 score = 20 units.

By using this conversion, we get

6/2 times 100=30%

So 1/2 dozen of one score is 30%

4 0
3 years ago
Evaluate the expression 5t + 2m = 7 and t =2 HELPP
Tomtit [17]

To solve, you need to plug in the values they give you into the equation.

5t + 2m

Plug in the numbers they give you

5(2) + 2(7)

Solve.

10 + 14

Simplify.

24

6 0
3 years ago
Read 2 more answers
A marathon is 26.2 miles long. There is a water station every 1 1/4 miles along the race route. How many water stations are need
BigorU [14]

Answer:

21

Step-by-step explanation:

Divide 26.2 by 1 1/4

6 0
4 years ago
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