Answer:
5h -2
Step-by-step explanation:
(6h + 1) - (h+3)
= 6h + 1 - h -3
= 5h -2
The answer is C. No, the adjacent sides are not perpendicular.
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Note: Steps of student are not given. So, the proper steps of the solution are provided below.
Given:
The inequality is

To find:
Where the student made any errors?
Solution:
We have,

On dividing both sides -5 change the sign of equality because -5 is a negative number.


Therefore, the solution of given inequality is
.
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Diameter of the larger gear х см
1/4х = 16 - 2.5
1/4x = 13.5
x = 13.5 * 4
x = 54 cm - diameter of the larger gear /