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There are many to choose from here but we'll take the two most important. Many succulents such as cacti have needles instead of leaves. This reduces the amount of water lost via transpiration meaning that...
We know that a digit can be a number between 0 and 9. In this case, the first digit can't be 0, so it has to be a number between 1 and 9. So, we have 9 possible choices for the fi...
5x+11=(y+2)/2Best way to think about this is like its a normal equation where you're trying to find the value of x, just break it down into simple steps. The best thing to do first is to get rid of ...
Note this is an arithmetic series problem, so we use the equation: xn = a + d(n-1).Number of steps on the first floor is 'a', i.e. a = 150.Difference in the number of steps on each ...
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