1. solve for x and y
2x- y=1
« 2x+2y=10

Step-by-step explanation:

{2x - y = 1

{2x + 2y = 10

{2x - y + 1

{x + y = 5 >> New Equation

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[Plug this back into both equations above to get the y-coordinate of 3];

I am joyous to assist you anytime.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13