Here is the answer that Siri gave me
Tell whether the given value is a solution of the inequality. x − 2 ≥ −1.6 ; x = 0.8
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We have been given a diagram and we need to find the value of arc angle a.
According to one of the circle theorems the angle at the centre of a circle is twice the angle at the circumference subtended by the same arc.
Therefore, arc angle a will be twice of the angle at circumference, that is, 34 degrees.
Therefore, value of angle a is:
Start by substituting the slope of 
into slope-intercept form, which is 
, where m is the slope:
Now, we'll use the given point to find b by substituting for x and y. The given point is (2, -3), so x=2 and y=-3:
Now add -8 to both sides to get:
Now, put it all together:
Now, we'll use the given point to find b by substituting for x and y. The given point is (2, -3), so x=2 and y=-3:
Now add -8 to both sides to get:
Now, put it all together: