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guajiro [1.7K]
4 years ago
11

Prove: If a^2-a is even then a is even.

Mathematics
1 answer:
Alla [95]4 years ago
6 0

This is not always true. Consider a=3. Then 3^2-3=9-3=6 is even, but a is odd.

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Please help me on this
jeka57 [31]

Answer:

A =256 cm^2

Step-by-step explanation:

The perimeter of a square is 64 cm

P = 4s where s is the side length

64 = 4s

Divide by 4

64/4 = 4s/4

16 =s

The side length is 16 cm

The area of a square is

A = s^2

A = 16^2

A =256 cm^2

7 0
3 years ago
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Answer:

x = 4 ± \sqrt{73}

Step-by-step explanation:

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timama [110]
The solution is c ...
4 0
3 years ago
The fraction 4/10 can be written as<br><br> A) 0.0004 <br> B) 0.004 <br> C) 0.04 <br> D) 0.4
lara31 [8.8K]
You can simplify the fraction to get 2/5. If you convert this into a decimal you will get 0.4, so D is your answer.
6 0
4 years ago
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Let f(x) = 2x – 1, g(x) = 3x, and h(x) = x2 + 1. Compute the following.
Colt1911 [192]
1.  g(-1) =  -3

f(-3) =  2(-3) - 1 =  -7

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3.   f(-5) =  -11
g(f(-5)) = g(-11) = -33
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3 years ago
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