Alex draws the scale model shown as a plan for a large wall mosaic.
A. The wall is 10m wide and 7m high. What are the dimensions of the largest mosaic he can make on that wall? Explain.
B. He will use 2-cm square tiles to make his mosaic. How many tiles will he need? Explain how you found your answer.

21

step-by-step explanation:

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i got 86 for this

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if you need an explanation just ask

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."