Express this number in scientific notation. 31 billion
1 answer:
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Check the picture below.
we know that AL is an angle bisector, so the angle at A gets cuts into two equal halves, we also know the angle at B is 30°, so the triangle ABC is really a 30-60-90 triangle, meaning the angle at A is really a 60° angle, cut in two halves gives us 30° and 30° as you see in the picture.
if the angles at A and B, inside the triangle ABL, are equal, twin angles are only made in an isosceles by twin sides, that means that AL = BL.
Looking at the triangle ALC, we can see is also another 30-60-90 triangle, and we can just use the 30-60-90 rule to get x=CL.
One line passes through the points (-2,3) and (0,-3) , it means the y intercept is b=-3
and slope m =
So the equation of line will be
And the inequality should be
Or
And the other line passes through (-2,3) and (0,2)
So the y intercept is b=2
and the slope is
So the equation of line will be
Or
So answer is