Answer:
5x + 10y + 5z
Step-by-step explanation:
Given the expression
Expand the parenthesis using the distributive law;
Hence the required solution is 5x + 10y + 5z
a swallow files at a speed of 50 km/h for 3 hours and then at a speed of 40 km/h for a further 2 hours .find the average speed f
2 answers:
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