8. (a) The diagram shows an airplane, a cruise ship, and a jet skier, not drawn to scale The plane is 330 m above sea level and the cruise ship is 560 m from the jet skier.
Airplane
Cruise Ship
330 m
Jet Skier
560 m
Sea
(1)
What is the distance between the airplane and the cruise ship?
[3 marks]​

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

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step-by-step explanation:

h56

j

jgh

j

gh

hnh

vnf

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)