I think uhhhhh I thinks uhhhhhh 21
Answer:
Yes, "y" varies directly with "x"
The constant of variation is:
Step-by-step explanation:
Constant variation equation has the following form:
Where "k" is the constant of variation.
You can notice in the table the when "x" increases, "y" increases and the ratio between them is always the same.
To find "k" you need to pick any a point from the table, subsitutte the coordinates into and solve for "k". Then:
To solve this question we will use the following diagram:
From the diagram, we get that the diameter of the semicircle is 8cm.
The perimeter of the figure is:
Substituting π=3.14 and simplifying we get:
Now, the area of the given figure is the area of the rectangle plus the area of the semicircle:
Substituting π=3.14 and simplifying we get:
Answer:
The diagram is shown in the picture. The real numbers are divided into rational numbers and irrational numbers. Example of a rational number is any fraction like 1/2, while an irrational number is one that cannot be expressed as a fraction like π. Then, integers are also part of the rational numbers which include positive and negative whole number like -5, and +4. Whole numbers are positive numbers from 0 to whatever number. Lastly, the natural numbers are whole numbers with the exception of zero. So, these are numbers from 1 to infinity.