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Tasya [4]
3 years ago
6

In how many ways can a teacher arrange 6 students in the front row of a classroom with a total of 20 students?

Mathematics
1 answer:
Vikki [24]3 years ago
8 0
This is a combination of 20 studants, 6 to 6:

C_{2,6}=\frac{20!}{(20-6)!6!}=\frac{20!}{14!6!}=\frac{20.19.18.17.16.15.14!}{14!.6.5.4.3.2.1}=38,760 \ ways
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If a scale drawing has a scale of 1 centimetre to 4 meters which measurements are correct
andrew-mc [135]

Answer: Statements 2 and 3

Step-by-step explanation:

On a drawing scale;

1cm - 4m

4CM - 16M (MULTIPLYING BY 4)

6cm - 24m (multiplying by 6)

7cm - 28m (multiplying by 7)

8cm - 32m (multiplying by 8)

9CM - 36M (MULTIPLYING BY 9)

3 0
3 years ago
The diameter of a cone is 1.5 meters, the height is 1.5 times the radius, what is the volume?​
seropon [69]

Answer:

.66 cu. meters

Step-by-step explanation:

volume for cone is V=1/3 x TT x r^2 x height

TT (pi) is 3.14

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V= 1/3 x 3.14 x .75^2 x 1.125

V= .66  cu. meters

6 0
2 years ago
Pls help me geometry is so confusing
Zolol [24]
Dab on them haters brobro
6 0
2 years ago
write an expression that shows how you can multiply 9 x 475 using expanded form and the distributive property
kiruha [24]
9(400 + 70 + 5). Distribute the nine to all the numbers in parentheses. 3600 + 630 + 45 = 4,275. 9 * 475 =4,275
4 0
3 years ago
Read 2 more answers
In a certain country, income tax is assessed as follows. There is no tax on income up to $15000. Any income over $15000 is taxed
andreev551 [17]

your answer is going to be $700 this is how u do it

first step: 22000-15000=7000

now you convert the 10% to a decimal and it turns into .10 now multiply that by your 7000 and you get $700 of tax

7 0
3 years ago
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