If the cross section shown is congruent to the base of the rectangular prism above, what is true about the cross
1 answer:
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Assumin we solving for the intersection or solution
elimination, ya
eliminate y's
multiply firs equation by 2 and add to 2nd
we get
6x+2y=16
<u>-x-2y=-10 +</u>
5x+0y=6
5x=6
divide both sides by 5
x=6/5
sub back
-x-2y=-10
-6/5-2y=-10
times both sides by 5
-6-10y=-50
add 6 to both sides
-10y=-44
divide both sides by -10
y=44/10
y=22/5
(x,y)
or
(1.2,4.4)
elimination, ya
eliminate y's
multiply firs equation by 2 and add to 2nd
we get
6x+2y=16
<u>-x-2y=-10 +</u>
5x+0y=6
5x=6
divide both sides by 5
x=6/5
sub back
-x-2y=-10
-6/5-2y=-10
times both sides by 5
-6-10y=-50
add 6 to both sides
-10y=-44
divide both sides by -10
y=44/10
y=22/5
(x,y)
or
(1.2,4.4)
