Sphere to 1
cone to 7
cylinder to 5
<span>triangular prism to 4
</span><span>cube to 3
</span><span>rectangular pyramid to 6
</span><span>triangular pyramid to 2
</span><span>rectangular prism to 8</span>
D=vt
So they will travel downstream and upstream the same distance. Downstream they will travel:
d=(2+18)t1
Upstream they will travel:
u=(18-2)t2
Since d=u we can say:
20t1=16t2
We are told the trip lasts 3 hours so t1+t2=3, t2=3-t1, using this in the equation above we have:
20t1=16(3-t1)
20t1=48-16t1
36t1=48
t1=4/3 hours, and from earlier we saw that d=20t1 so:
d=20*4/3
d=80/3 miles
d=26 2/3 miles.
The power is 2 because the numbers of both numerator and denominator are multiplied in double that is 8*8 = 8^2 = 64 and 9*9 = 9^2 = 81
1/6 + 4/5 = 5/30+24/30= 29/30 + 5/6 = 29/30 + 25/30= 54/30= 1 24/30 = 1 12/15 = 1 4/5
You can determine if a triangle on the coordinate plane is a right triangle by using the Pythagorean Theorem<span />
