4) Solve each pair of simultaneous equations.
1 answer:
4) a. x+y=1–(1) y=2x-8—(2) (2) into (1) x+(2x-8)=1 3x-8=1 3x=1+8 x=9/3 x=3—(3) (3) into (2) y=2(3)-8 y=-2 ans x=3, y=-2 b. x+y=19—(1) y=5x+1—(2) (2) into (1) x+(5x+1)=19 6x+1=19 6x=19-1 x=18/6 x=3—(3) (3) into (2) y=5(3)+1 y=16 ans x=3, y=16 c.x+y=-2—(1) y=x-10—(2) (2) into (1) x+(x-10)=-2 2x-10=-2 2x=-2+10 x=8/2 x=4–(3) (3) into (2) y=4-10 y=-6 ans x=4, y=-6 5) 3x=y—(1) x=y-16–(2) (2) into (1) 3(y-16)=y 3y-48=y 2y=48 y=48/2 y=24–(3) (3) into (2) x=24-16 x=8 ans x=8, y=24
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77 is ur answer hope this helps u
121 rounded to the nearest 100 is 100 because 121 is closer to 100 than 200. 252 rounded to the nearest hundred is 300 because 252 is closer to 300 than 100.
Answer:
these are the step to follow so A=bh
Step-by-step explanation: A=1/2bh A=bh A=1/2 (b=b)h this is an example so you can follow how i did this
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Step-by-step explanation:
Answer: Slope m = 2 y-intercept b = 100 Equation: y = 2x + 100