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Ket [755]
3 years ago
9

A bag has 2 blue marbles, 3 red marbles, and 5 white marbles. Which events have a probability greater than One-fifth?

Mathematics
1 answer:
nignag [31]3 years ago
4 0

Answer:

choosing 1 blue marble, choosing one white marble not replacing it and choosing a blue and lastly choosing one white marble.

Step-by-step explanation:

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Jerome burns 4 cal/min walking and 10 cal/min running. He walks between 10 and 20 min each day and runs between 30 and 45 min ea
erik [133]

Answer:

20 minutes should spend on walking and 30 minutes on running.

Step-by-step explanation:

Let x represents the minutes spent on walking and y represents the minutes spent on running,

∵ He burns 4 cal/min walking and 10 cal/min running,

So, the total calories burnt,

Z = 4x + 10y

Which has to be maximised.

Now, he walks between 10 and 20 min each day,

i.e. 10 < x < 20,

Also, he runs between 30 and 45 min each day,

i.e. 30 <  y < 45,

By graphing 10 < x < 20 and 30 <  y < 45,

We obtained the vertices of feasible region,

(10, 45), (20, 45), (10, 30) and (20, 30)

At (10, 45),

Z = 4(10) + 10(45) = 40 + 450 = 490,

At (20, 45),

Z = 4(20) + 10(45) = 80 + 450 = 530,

At (10, 30),

Z = 4(10) + 10(30) = 40 + 300 = 340,

At (20, 30)

Z = 4(20) + 10(30) = 80 + 300 = 380

Hence, maximum calories is 530 when 20 minutes spent on walking and 30 minutes spent on running.

5 0
3 years ago
Angela has 63 eggplants in 21 rows of her eggplant garden.
Lorico [155]

Answer:

A. 27

Step-by-step explanation:

21 x 3 = 63

9 x 3 = 27

6 0
3 years ago
last week , it rained x inches. This week the amount of rain decreased by 5%. which expressions represent the amount of rain tha
MArishka [77]

0.95 x


as 0.95 is the same as decreasing by 5%

extra help:
to increase by 5% you times by 1.05x
7 0
3 years ago
Read 2 more answers
Find the volume and area for the figures shown and answer the question
olga_2 [115]

Answer:

hope that this helps. the answers are as follows

8 0
3 years ago
Using the graph, determine the coordinates of the vertex of the parabola.
Anna007 [38]

Answer:

(-4,-4)

Step-by-step explanation:

You can see the vertex from the graph

7 0
2 years ago
Read 2 more answers
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