
which can be written as -sqrt(25) on a keyboard, can be simplified to -5 since the square root of 25 is 5.
Put another way, 5^2 = 25 so we're simply going in reverse.
So the question is: where does -5 belong? Which number set?
The answer is: the set of
integers and
rational numbersSo that's the two
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Extra Info:
The value -5 is not a natural number as the set of natural numbers is {1, 2, 3, 4, 5, ...} basically the set of counting numbers
The same story applies to the set of whole numbers which is {0, 1, 2, 3, ...}
So -5 is not in the set of whole numbers
The value -5 is also not irrational because it is rational. We can write it as a ratio of two integers: -5 = -5/1
Answer:
58 cm^2
Explanation:
there are three rectangles in the shape
the first one on the left has length = 7 cm and width = 3 cm.
so area = l × w
= 7×3
=21 cm^2
the one in the middle has length = 4 cm and width = (7- 3) => 4cm
so area = 4 × 4
= 16 cm^2
the last one to the right is identical to the first, so area = 21 cm^2
The combined area = 21 + 16 + 21
= 58 cm^2
216/24=9
9(144)=1296
They will sell 1,296 phones in the next 144 days.
Answer:
64
Step-by-step explanation:
1 x 2 = 4
4 x 2 = 8
8 x 2 = 32
32 x 2 = 64