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vichka [17]
4 years ago
12

A bag contains green marbles and blue marbles, 36 in total. The number of green marbles is 4 more than 3 times the number of blu

e marbles. How many green marbles are there?
Mathematics
1 answer:
ikadub [295]4 years ago
6 0
Number of blue marbles = n
number of green marbles = 3n+4

n+3n+4=36
4n+4=36
4n=32
n=8

sub n=8 into 3n+4

=3(8)+4
=24+4
=28

therefore there are 28 green marbles
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What is the slope of the line in the graph?
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3 years ago
A rug is to fit in a room so that a border of even width is left on all four sides. if the room is 22 feetby 25 feet and the are
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Find area of the border :
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Define y:
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Let the width be y.

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Find area of the border in term of y :
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The area of the border =  22y x 2 + 25y x 2 - 4y² = 94y - 4y²
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Solve y :
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94y - 4y² = 312
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Answer: The border can be 4 ft or 19.5 ft 
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7 0
3 years ago
A sculpture is created with colored blocks each with a volume of 1 cubic foot. What is its volume if the sculpture is 12 feet lo
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Answer:

480 ft^3

Step-by-step explanation:

We can calculate the volume of the sculpture with the data they give us in the statement.

The volume would be the multiplication between the length, width and height, that is:

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we know that l = 12 ft; w = 5 ft; h = 8 f, replacing:

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in other words, the volume of the sculpture is 480 cubic feet, therefore 480 color blocks are needed because its volume is 1 cubic foot.

7 0
3 years ago
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