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alukav5142 [94]
2 years ago
7

A competition problem requires one hour to fully develop (write, proofread, edit, and typeset). This problem is then given to 30

,000 students, each working an average of 24 seconds to solve the problem. What is the ratio of a problem's development time to the total time spent by the students to solve the problem?
Mathematics
2 answers:
DanielleElmas [232]2 years ago
6 0

Answer:

1/200

Step-by-step explanation:

since you do 30000*24=720000 and you then divide it by 3600 to get 200 hours so it is 1/200

Vsevolod [243]2 years ago
5 0

Answer:

1250

Step-by-step explanation:

30,000/24

divide both sides by 24 to get 1250.

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Which expression is equivalent to square root of 8x^7y^6? assume x is greater than or equal to 0
laila [671]

Answer:

2x^3y^3\sqrt{2x}

Step-by-step explanation:

= \sqrt{8x^7y^6}

= \sqrt{2^2 *2*x^6*x*y^6

= 2x^3y^3\sqrt{2x}

6 0
2 years ago
Find three consecutive even integers such that the largest is three times the smallest.
Naddik [55]
X+x+2+x+4

we want x+4=3(x)

x+4=3x
2x=4
x=2

the integers are 2,4,6
6 0
2 years ago
Sara has 20 sweets.
nalin [4]

Answer:

The probability that the two sweet will not be same type is \frac{111}{190}

Step-by-step explanation:

P(two sweets not same) = 1 - P( two sweets will be same)

There are 3 possible outcomes where two sweets will be same.

1. it can be two liquor-ice, 2. it can be 2 mint and 3. it can be two humbug

P(two liquor-ice) =\frac{12}{20} \times\frac{11}{19}= \frac{33}{95}

P(two mint) =\frac{5}{20} \times \frac{4}{19} =\frac{1}{19}

P(tow humbug) =\frac{3}{20} \times\frac{2}{19} =\frac{3}{190}

Now we have:

P(two sweets not same) = 1 - P( two sweets will be same)

                                  =1- \left(\frac{33}{95}+ \frac{1}{19}+ \frac{3}{190} \right)

                                   1-\frac{79}{190}

                                   =\frac{111}{190}

Therefore, the probability that the two sweet will not be same type is \frac{111}{190}

3 0
2 years ago
Jeff has 8 red marbles, 6 blue marbles, and 4 green marbles that are the same size and
Arada [10]
Answer:
1/3

Explanation:
5 0
2 years ago
Read 2 more answers
Solve for x. 3x-r=r(-3+x)
Alexeev081 [22]
3x-r=r (-3+x)
3x-r=-3r+xr
3x-r+r=-3r+xr+r
3x=-2r+xr
3x-xr=-2r+xr-xr
3x-xr=-2r
x (3-r)=-2r
x (3-r)/(3-r)=-2r/(3-r)
x=-2r/(3-r)
7 0
2 years ago
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