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Firlakuza [10]
2 years ago
8

There are 20 runners in a race for 1st, 2nd, 3rd, and 4th place. How many different arrangements can be made?​

Mathematics
1 answer:
Setler [38]2 years ago
3 0

Answer: 160

Step-by-step explanation:

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3x+2y-z=8<br> -3x+4y+5z=-14<br> X-3y+4z=-14
Luda [366]

Answer:

B? I think

Step-by-step explanation:

sorry I really want to help but I dont get what the question is asking

4 0
3 years ago
At a grocery store, the price of milk decreased from $2.98 to $2.32. What is the percent of decrease, round to the nearest whole
mr Goodwill [35]
2.98=100%
2.32/2.98 = 0.78
0.78*100=78%
The percent of decrease was 22%.
4 0
3 years ago
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Calculate the perimeter of the composite figure. Round your answer to the nearest hundredth. Use 3.14 for $\pi$ .
Elena-2011 [213]

1. Perimeter is 3 + 3 +3 +4 +5 = 18 feet

 Area = 3*3 = 9, 1/2*3*4 = 6, 9 + 6 =15 square feet

2. perimeter = 2.5 +2.5+ 2.5+2.5+0.5+0.5 = 11 meters

  Area = 3*.5 = 1.5, 3*2=6,  6+1.5 = 7.5 square meters

3. perimeter = 3.14*2*3 = 18.84 +8 = 26.8 inches

  Area = 6*4 = 24 + 3.14*3^2 = 28.26 = 28.26 +24 = 52.3 inches  

4. surface area = 2*π*6*20+2*π*6^2= 980.2 yards

Volume = π*6^2*20 = 2261.9 cubic yards

5.surface area = 2*(9*7+2*2+2*9) = 190 cm

Volume = 2*7*9 = 126 cubic cm

6. surface area = 2*(11*11+11*11+11*11) = 726 mm

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3 0
2 years ago
Drag each equation to show if it could be a correct first step to solving the
svlad2 [7]
Note:
PEMDAS

Solve the parentheses by multiplying 3:

18 + 3x = 24

Solve for x:

(Subtract 18 from both sides)

3x = 6

(Divide 3 on both sides)

x = 2
7 0
3 years ago
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Would you classify 196 as a perfect​ square, perfect​ cube, both, or​ neither?
Olegator [25]
196 is a perfect square
4 0
3 years ago
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