In this case, the continents are moving apart at a rate (velocity = 3 cm/y) and the distance for continent to move(distance= 500km). You are asked how long it will take(time). <span>Then to answer this question you need to convert the 500km into the same unit as the velocity which was cm. The formula would be:
Distance = velocity x time
500km x 10^5 cm/km= 3cm/year x time
time= 5x 10^7 cm / (3cm/year)
time= 1.7 x 10^7 year or 17 million year
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Plug in 0 for y to find the x intercept:
7x +3(0)= -21
7x=-21
x= -3
Plug in 0 for x to find y intercept:
7(0) + 3y= -21
3y= -21
y= -7
Answer: 3:1
Step-by-step explanation:
Since the jewellery shops sell 240 necklaces in a month and 180 of the necklaces were sold via the shop's website, this means that (240 - 180) = 60 necklaces were sold in a high street shop.
Therefore, the ratio of online sales to shop sales will be:
= 180 / 60
= 3 / 1
= 3:1
