3 years ago

Give an example of a repeating decimal where two digits repeat. Explain why your number is a rational number?

1 answer:

8 0

An example of a repeating decimal would be 6.78787878. a rational number is a number that can be represented a/b where a and b are integers and b isnt equal to 0, so a<span>ny decimal number that is repeating can be written in the form a/b with b not equal to zero so it is a rational number</span>

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Find the sum or difference: 2.8 - -5.1

Travka [436]

2.8-(-5.1)

-(-5.1)=5.1

2.8+5.1= 7.9

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3 0

4 years ago

Read 2 more answers

A square matrix A is said to be idempotent iff A2 = A. (i) Show that if A is idempotent, then so is I − A. (ii) Show that if A i

muminat

Answer:

Step-by-step explanation:

Given that A is a square matrix and A is idempotent

$A^2 = A$

Consider I-A

i) $(I-A)^2 = (I-A).(I-A)\\= I^2 -2A.I+A^2\\= I-2A+A\\=I-A$

It follows that I-A is also idempotent

ii) Consider the matrix 2A-I

$(2A-I).(2A-I)=\\4A^2-4AI+I^2\\= 4A-4A+I\\=I$

So it follows that 2A-I matrix is its own inverse.

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3 years ago

A line passes through the points (2,4) and (5,6) . Select Yes or No to tell whether each equation describes this line. Equation

krek1111 [17]

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