Answer:GH = 5
Step-by-step explanation:
GJ = GH + HI + IJ
It is given that GH = IJ
Also, it can be seen that HJ = HI + IJ
We want to determine GH.
From the information given,
HJ = 7 and HI = 2. This means that
7 = 2 + IJ
Subtracting 2 from the left hand side and the right hand side of the equation, it becomes
IJ + 2 - 2 = 7 - 2
IJ = 5
Since GH = IJ, then it means that
GH = 5
Their total age is fourty nine
Answer:
x=5, -1
Step-by-step explanation:
set the equation equal to 0: 2x^2-8x-10=0
divide both sides by 2 to get x^2-4x-5=0
next factor your new equation to get (x+1)(x-5)
set those equal to zero
now you have x+1=0 and x-5=0
finally, solve for x by subtracting 1 and adding 5
now you have your answer x= 5 and -1