The answer is 6
Because the number line is skip counting by 2
Equilateral triangle
Explanation:
All of the sides are equal
Count the dots plotted here. There are four of them, right? What are the x-coordinates of those four dots: Answer: {-1, 0, 1, 2}.
Reject answers B and C because none of the four dots have x-coordinate -3.
Reject answer A because this set would not include x=-1 or x=2.
The length and breadth(width) of the pool are

Let

From the question, we can build the following relationships

subtracting to eliminate
(we do not even need it!)

we can also build another relationship from the question. Since the area of the strip equals the area of the pool:

We have two unknowns,
and
. Eliminate 

If we solve the quadratic equation for
, we get

and

The length and breadth(width) of the pool are

Learn more about area here: brainly.com/question/1447350
Answer:

Step-by-step explanation:
Given
Red = 5
Blue = 3
Orange = 2
Required
Probability that the first marble is Blue
First, the total number of marble has to be calculated;



The probability of Blue being the first is calculated as thus;



<em>Hence, the required probability is 0.3</em>