Answer:
QD = 13
Step-by-step explanation:
According to the Centroid theorem of a triangle, the Centroid is ⅔ of the distance from every vertex angle to the midpoint of the side opposite to each of them.
By this we can deduce that:
QD = ⅔(QD + DK)
Substitute
QD = ⅔(QD + 6.5)
Multiply both sides by 3
3*QD = 2(QD + 6.5)
3QD = 2QD + 13
Subtract both sides by 2QD
3QD - 2QD = 13
QD = 13
Answer:
f(3)=3³+2×2²-2-1=27+8-3=32
They are the exact same, so no.
Answer:
1000
Step-by-step explanation:
Lets just say x is the bigger number. We can create two equations.
x + y = 70
x - y = 30
If we add these equations together, we get that:
2x = 100
and that
x=50
Plugging x back into any of the equations gets us that y = 20, so xy = 20*50 = 1000
Remember that the surface area of a cube is A=6s^2 since there are 6 sides in a cube and the area of one side of a cube is A=s^2
Given a side length of 11 cm, we do the following:
A=6(11)^2
A=6(121)
A=726
So the surface area is 726 cm^2
