Answer:
b
Step-by-step explanation:
Yes, any number that can be written as a fraction like that is rational.
A cube shaped box of side length equal to m foot has volume
foot cubed.
a.
Let v1 be the volume of the box with side length 1 ft.
and v2 be the volume of the box with side length x ft.
(foot cubed)
(foot cubed)
Vtotal=
feet cubed
b.
by the "sum of cubes" identity:
,
this identity can be derived by dividing
by (x+1), by long division.
c. Vtotal when x=3 feet is:
Vtotal=
(feet cubed)
Answer:
Step-by-step explanation:
Area of plane figures
Being r the radius of a circle, the area of a sector defined by an angle is
If a is the repeated side of an isosceles triangle and is the angle they define, then the area of the triangle is
The figure shows a circle with radius of r=7 cm. The white area is equal to the area of the circle minus the blue area
The area of the circle is
The blue area is the sum of the sector defined by the angle (360-150)= and the triangle. An angle of is equivalent to
The area of the sector is
The area of the triangle with center angle 150^o is
The blue area is
Finally, the white area is
9 : 15
Proportion is 3:5
So if width is 3 then the length shud be 5
5 inches