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Answer:
b=-3
Step-by-step explanation:
It is between the first two I believe it is the first one I am not absolutly sure though
Answer: First option 13
Solution
If ABCD is a rhombus, the diagonals must be perpendicular, then the angle (5x+25)° must be a right angle (90°):
(5x+25)°=90°
5x+25=90
Solving for x: Subtracting 25 both sides of the equation:
5x+25-25=90-25
Subtracting:
5x=65
Dividing both sides of the equation by 5:
5x/5=65/5
Dividing:
x=13
Answer: The value of x must be 13
It its normal form its 48/100 but in its simplest form it is 12/25. Your welcome!<span />
