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Archy [21]
3 years ago
13

Explain why 20 is not a square number.

Mathematics
1 answer:
Marizza181 [45]3 years ago
8 0

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 20 is about 4.472. Thus, the square root of 20 is not an integer, and therefore 20 is not a square number.

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In the diagram, angle abc is a right angle. Find the value of x<br><br> Show full working out pls ty
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Answer:

x = 3.75

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At lunch a waiter had seven customers and two of them didn’t leave a tip.If he got seven each from the ones who did tip how much
11Alexandr11 [23.1K]

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6 0
2 years ago
Shiloh is 7 years older than Courtney. Shiloh's age is 13 years less than two times Courtney's age. The system below models the
Andrews [41]

I'm afraid I don't see the models you have written about although I do know the answer. (C= Courtney's age, S= Shilo's age)

Shilo is 7 years older then Courtney, which equals to C+7=S.

While at the same time Shilo is 13 years younger then twice Courtney's age. This turns into Cx2-13=S.

c+7=cx2-13. This is the equation, now lets work it out.

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8 0
3 years ago
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