The expression 125x^3+343y^3 can be factored using the sum of cubes formula to obtain (5x+7y)(25x^2 -35xy + 49y^2).
The expression 125x^3+343y^3 is a sum of two cubes. The formula to factor a sum of cubes, a^3 + b^3, is (a+b)(a^2-ab+b^2). In this case, a is 5x and b is 7y, as (5x)^3 = 125x^3 and (7y)^3 = 343y^3. So, we apply the formula to obtain: (5x+7y)((5x)^2 - (5x)(7y) + (7y)^2), which simplifies to (5x+7y)(25x^2 -35xy + 49y^2).
Therefore, the factored form of the expression 125x^3+343y^3 is
= (5x+7y)(25x^2 -35xy + 49y^2).
#SPJ11
Answer:
(5x + 7y)(25x² - 35xy + 49y²)
Step-by-step explanation:
125x³ + 343y³ ← is a sum of cubes and factors in general as
a³ + b³ = (a + b)(a² - ab + b³) , thus
125x³ + 243y³
= (5x)³ + (7y)³
= (5x + 7y)((5x)² - 5x(7y) + (7y)² )
= (5x + 7y)(25x² - 35xy + 49y²)
(b). Find the volume of the solid generated when R is revolved about the line y=-2.
Volume of the solid generated when R is revolved about the x-axis is 10π and the volume of the solid generated when R is revolved about the line y = -2 is 40π/3.
Graph is a mathematical representation of a network and it describes the relationship between lines and points.
The volume of the solid generated when R is revolved about the x-axis,
where a and b are the x-coordinates of the points of intersection of the curve y = √(x-2) and the line y = 2.
Solving y = √(x-2) and y = 2 for x, we get:
x = 6 and x = 2
Limits of integration are a = 2 and b = 6. Substituting y = √(x-2) into the formula for the volume, we get:
V =
V= π [(6²/2 - 2(6)) - (2²/2 - 2(2))]
=10π
Volume of the solid generated when R is revolved about the x-axis is 10π.
b. The volume of the solid generated when R is revolved about the line y = -2
Substituting y = √(x-2) into the formula for the volume, we get:
We can simplify this by using the identity:
V =40π/3
Therefore, the volume of the solid generated when R is revolved about the line y = -2 is 40π/3.
Hence, Volume of the solid generated when R is revolved about the x-axis is 10π and the volume of the solid generated when R is revolved about the line y = -2 is 40π/3.
To learn more on Graph click:
#SPJ6
Hello!
First, let's analyze these two quadrilaterals:
• Notice that the quadrilateral AB'C'D is ,smaller ,than the quadrilateral ABCD.
Let's try to solve it using the lines AB and AB':
• The measurement of the ,line AB is 14 units,.
,• The measurement of the ,line AB' is 7 units,.
Knowing it, let's write the scale factor as:
Answer: alternative D.
Answer:
Miles Traveled is independent.
Cost is the dependent.
Step-by-step explanation: