What is the length of side s of the square show below PLEASE HELP ASAP :(

s = √2

Step-by-step explanation:

This is a 45-45-90 right angle.  

All sides of this square have length s.

Use the Pythagorean Theorem to write an expression for s².

s² + s² = 2², or

2s² = 2²

Reduce this by dividing both sides by 2:

s² = 2

Taking the square root of both sides yields s = √2

The side length is s = √2.  All sides have this single length.

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

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