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steposvetlana [31]
3 years ago
7

A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 54 marbles in it. At least how many g

reen marbles does it have?
Mathematics
2 answers:
Hunter-Best [27]3 years ago
3 0
b\ \ \ \rightarrow\ \ \ the\ number\ of\ blue\ marbles\\g\ \ \ \rightarrow\ \ \ the\ number\ of\ green\ marbles\\\\b+g \geq 54\ \ \ and\ \ \ b=2g\\\\2g+g \geq 54\ \ \ \Leftrightarrow\ \ \ 3g \geq 54\ \ \ \Leftrightarrow\ \ \ g \geq 18\\\\Ans.\ At\ least\ 18\ green\ marbles.
Vilka [71]3 years ago
3 0
If we have twice as many blue marbles as green, we have 3 parts; 2 parts blue and 1 part greens. Therefore, 1/3 of the marbles are green

54/3=18
At least 18 of the marbles are green
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vampirchik [111]

Step-by-step explanation:

We are dealing with theoretical probability. This means that our probability of said outcome is

\frac{x}{y}

where x is the outcome we want, and y is the total number of outcomes possible.

28. There is 3 triangles out of 6 polygons so the probability is 1/2.

29.There is 1 Pentagon so the probability is 1/6.

30. This is a complement to question 28. A complement is the inverse of the problem. A complement and its original add to 1 so the probability of both getting a triangle is 1/2.

31. There is 4 non quadraletrial so the probability is 2/3.

32. There is 3 figures that has more sides than three so 1/2 is the probability.

33.There is only multi right angles figures so 1/2 is the probability.

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2 years ago
These are the first sentences in the short story, "The Gift of the Magi," by O. Henry:
Aleonysh [2.5K]

I think the answer to this is: 25q + 10d + 5n + 60 = 87

The story says that you have 1 dollar and 87 cents; 60 cents of which is pennies. So, if you’re using an equation involving quarters, dimes and nickels, the total equation should equal to 87 cents (since that dollar bill could not be broken down to cents). 

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fiasKO [112]

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2 years ago
Need some help please <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B11%7D%7B15%7D%20%20%2B%20%28%20-%20%20%5Cfrac%7B3%7D%7B
emmasim [6.3K]

Answer:

-1/60

Step-by-step explanation:

\frac{11}{15}  + (- \frac{3}{4} )\\

= \frac{11}{15}  -  \frac{3}{4}\\

= \frac{44}{60}  -  \frac{45}{60}\\  (find LCM of demoninators)

= \frac{44-45}{60}\\

= \frac{-1}{60}\\

= -1/60

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blsea [12.9K]

Answer:

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5.1/2 = 2.55

2.55 × 5.95 = 15.1725

15.1725×4 = 60.69

60.69 + 26.01 = 60.69cm^2 nice

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