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mrs_skeptik [129]
3 years ago
15

John has 30 marbles , 18 of which are red and 12 of which are blue. Jane has 20 marbles, all of them either red or blue. If the

ratio of the red marbles to the blue marbles is the same for both John and Jane, then John has how many more blue marbles than Jane?
Mathematics
1 answer:
morpeh [17]3 years ago
4 0
12/30 = percentage of blue marbles = 40%
40% of 20 =8
12-8 =4
John has 4 more blue marbles
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IgorLugansk [536]
What are you looking for like what type of answer Exact Form:
√10 π/5

is simplified
3 0
3 years ago
What is the volume of the composite figure shown below?
AVprozaik [17]

Answer:

2412 mm³

Step-by-step explanation:

In the figure attached, the composite figure is shown.

Dimension of top rectangular prism:

  • length of 13 millimeters
  • width of 12 millimeters
  • height of 12 millimeters

Volume of top rectangular prism: length*width*height = 13*12*12 = 1872 mm³

Dimension of bottom rectangular prism:

  • length of 15 millimeters
  • width of 12 millimeters
  • height of 3 millimeters

Volume of bottom rectangular prism: length*width*height = 15*12*3 = 540 mm³

Volume of the composite figure: 1872 + 540 = 2412 mm³

7 0
3 years ago
Ignacio shares 2.1 liters of water equally into 7 containers. How many milliliters are in each container?
Stella [2.4K]

Answer: 300 ml

Step-by-step explanation:

First and foremost, we should note that:

1000 milliliters = 1 liter

Therefore, 2.1 liters = 2.1 × 1000 = 2100 millimeters.

Therefore, since the liters of water is divided into 7 containers, the vlaue in each container will be:

= 2100 millimeters / 7

= 300 millimeters

8 0
3 years ago
Find the area of a rectangular measuring 25 feet long by 8 feet wide. Show your work
Amiraneli [1.4K]
Area=length*height
Area=(25)*(8)
Area=200 feet^2
7 0
3 years ago
A line passes through (6, 3), (8, 4), and (n, -2). Find the value of n.
timurjin [86]

Answer:

n = -4

Step-by-step explanation:

Notice how in the previous examples they all divide by 2? It is the same case here. So now the question is... "what" divided by "2" is "-2".

Let me show you:

n ÷ 2 = -2

if you know your integer math, you should know that...

-4 ÷2 = -2 (this is the correct equation)

8 0
1 year ago
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