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GREYUIT [131]
3 years ago
14

The radius of a circle is 21 in. What is the precise distance around the circle?

Mathematics
1 answer:
Afina-wow [57]3 years ago
7 0

Answer:

IT IS REALLY 31

Step-by-step explanation:

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A candidate for mayor plans to campaign at 5 shopping malls before the election. In how many different ways can the candidate sc
Svetlanka [38]

Answer:

120 different ways

Step-by-step explanation:

For the first shopping mall being visited, the candidate has 5 options

Then, for the second mall being visited, there is only 4 options, as one mall was already visited.

Following this logic, there is 3 options for the third mall, 2 options for the fourth mall and 1 option for the last mall.

So the total number of ways that the visits can be scheduled is the product of all these options:

5*4*3*2*1 = 120 different ways

6 0
3 years ago
Solve for k:<br>1/3k + 1/2 = 1/4k
son4ous [18]
\frac{1}{3}k+\frac{1}{2}=\frac{1}{4}k\ \ \ \ \ \ |\cdot12(to\ eliminate\ fractions)\\\\\frac{12}{3}k+\frac{12}{2}=\frac{12}{4}k\\\\4k+6=3k\\\\4k-3k=-6\\\\k=-6
3 0
4 years ago
What is the area of the triangle?<br> 9 4 12
LUCKY_DIMON [66]

Answer:

  13.636

Step-by-step explanation:

The area can be found using Heron's formula:

  A = √(s(s-a)(s-b)(s-c))

where s=(a+b+c)/2.

For the given triangle, ...

  a=9, b=4, c=12, s=(9+4+12)/2 = 12.5

  A = √(12.5(3.5)(8.5)(0.5)) = √185.9375 ≈ 13.636

The area of the triangle is about 13.636 square units.

7 0
3 years ago
There are 6 red marbles, 5 green marbles, and 4 yellow marbles in a bag. If Joe picks 2 marbles one after the other without repl
lapo4ka [179]
The probability that both marbles will be a red color is:
 
    6.....    ⇔ number that satisfies the constraint
_____
   15.....    ⇔ number of outcomes
4 0
3 years ago
Find the value of:
DENIUS [597]
Plug x and y when you type in the calculator
2-2(2+3) and see your answer
8 0
4 years ago
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