There are 2 x’s so it’s 2x^2 + 9x because 2x4 is 8 + 1 x and then + 4 because you connect like terms so it would be 2x^2+9x+4
Answer:
Consecutive sides must be congruent.
All interior angle adds up to 360°
Step-by-step explanation:
Rhombus:
1. Sides: all 4 sides are congruent.
Then consecutive sides must be congruent.
2.Diagonals : Diagonals bisect each other at 90°.
So, second option is wrong.
3. Sum of interior angle is 360°.
Answer:
the answer is the third one
Answer:
x=3, y=-1
Step-by-step explanation:
x+y = 2
x -y =4
I will use elimination to eliminate the variable y. Add the two equations together.
x+y = 2
x -y =4
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2x = 6
Divide each side by 2
2x/2 = 6/2
x = 3
But we still don't know y
x+y =2
Substitute x=3 into the equation
3+y =2
Subtract 3 from each side
3-3 +y =2-3
y =-1
