A proportional relationship between two quantities is one in which the two quantities vary directly with one and other. If one item is doubled, the other, related item is also doubled. Because of this, it is also called a direct variation. The equations of such relationships are always in the form y = mx , and when graphed produce a line that passes through the origin. In this equation, m is the slope of the line, and it is also called the unit rate, the rate of change, or the constant of proportionality of the function.
Answer:
3 x 3 = 9 + 3 x 3 = 9 which would be 18, then add 7 and 3 which would be 10 then multiply it by 5 which would be 50 then divided by 2 and you would get 25 add 25 two times which would be 50 once you do, you add the 18 which would be 68 in square.
Step-by-step explanation:
A=4,5 b=7.5
explain: 6/8=3/4 so we have 10*3/4=7.5 and 6*3/4=4.5 ^^ I can wrong
Axiom and postulates. They are considered to be self evident.
They are asking of the surface area of the ball.
Surface area of a sphere = 4 * pi * radius²
If the diameter is 9, then the radius is 4.5
4 * pi * (4.5)²
4 * pi * 16.25
65 * pi
≈ 204.2 inches
Approximately 204.2 inches of leather are needed to cover the ball.