3 years ago

How do contour lines show elevation, slope, and relief?

1 answer:

4 0

A contour line is a line of 'equal height': every point on a contour is the same height above sea level.

The closer any two contour lines are the steeper the hill is: and the further apart they are the move level the ground.

If a group of contour lines suddenly move to form a V shape then the hill either has a promontory sticking out from it or a valley in it.

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A town has two shopping malls. A survey conducted on the shopping preferences of the town's residents showed that 62% of the res

jeyben [28]

Given:

62% of the residents visit Comet Mall.

73% of the residents visit Star Mall.

48% of the residents visit both malls.

To find:

The probability that a resident chosen at random shops at either Comet Mall or at Star Mall.

Solution:

Let A be the event that the residents visit Comet Mall and B be the event that residents visit Star Mall. Then, we have

$P(A)=62\%$

$P(B)=73\%$

$P(A\cap B)=48\%$

We need to find the probability that a resident chosen at random shops at either Comet Mall or at Star Mall. It means, we have to find the value of $P(A\cup B)$ .