Answer:
I will use x as the distance traveled in 7 hours
450/5.5 = x/7.7 - set up proportion
5.5x = 3465 - cross products
5.5x/5.5 = 3465/5.5 - divide each side by 5.5
x = 630 - answer
hope this helps.
Step-by-step explanation:
Answer: 0.96
Step-by-step explanation:
Take -9 to other side and get 4n=0
final answer n=0
1/3=0.33333333 forever
2/3=0.66666666 forever
8/3=3/3+3/3+2/3=1+1+2/3=2+2/3=2+0.66666666=2.666666666666666 forever
To solve, lets find the volumes of all of the options...
V=l*w*h
A.
6*3*4=72cm³
12*2*3=72cm³
B.
2*4*9=72cm³
9*4*2=72cm³
C.
3*3*8=72cm³
2*6*8=96cm³
D.
6*3*4=72cm³
9*4*3=108cm³
We can conclude that C & D aren't the answer, since they contain prisms that don't have a volume of 72cm³.
Now lets solve for the surface area of A and B...
A.
sA=2(wh+lw+lh)=2(6*3+4*6+4*3)=2(18+24+12)=2(54)=108cm²
sA=2(wh+lw+lh)=2(12*2+3*12+3*2)=2(24+36+6)=2(56)=112cm²
B.
sA=2(wh+lw+lh)=2(2*4+9*2+9*4)=2(8+18+36)=2(62)=124cm²
sA=2(wh+lw+lh)=2(9*4+2*9+2*4)=2(36+18+8)=2(62)=124cm²
A is the only option with both similar volumes of 72cm³ and different surface areas...
Answer=A
