Let us assume that the time after which Brad will have the same number of key chains as Velma = x hours
We already know that
Number of key chains Brad can make in an hour = 4
Number of key chains that Velma can make in an hour = 3
So after x hours,
Number of key chains that Brad can make = 4x
Number of key chains that Velma can make = 3x
Number of key chains that Velma already has = 6
Then the equation will be
3x + 6 = 4x
4x - 3x = 6
x = 6
So, from the above deduction, we can conclude that after 6 hours Brad will have the same number of key chains as Velma.
Answer:
Step-by-step explanation:
Given
Required
The area of the shaded sector
This is calculated as:
This gives
Answer:
x=18
Step-by-step explanation:
y²+y²=(9√(2))²
2y²=81*2
y²=162/2
y²=81
y=9
hypotenuse: 2y=x 2*9=18
x=18
Answer:
-20
Step-by-step explanation:
5a - 2b a=-2 b=5
5(-2)-2(5)
-10-10=-20
360° (a circle) = 2pi radians, so 720×2pi/360
= 2×2pi = 4pi
4pi = a*pi
a = 4