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Answer:
Step-by-step explanation:
hello :
the ratios 2:1 and 18:9 are equivalent because :
2/1 = (2×9)/(1×9)= 18/9
to write decimal as a percent, multiply by 100
so 0.78 *100 = 78%
When will they blink together?
what is the smallest number they both mutiply to
3*5=15
so every 15 seconds
so at 15, 30, 45, 60 seconds
so 4 times if you count the time exactly at 1 minute
