Answer:
3) 11x+3
4) 8x³+2x²+2x+8
Step-by-step explanation:
The answer is either undefined or “x does not exist in the set of all real numbers”.
Answer: Answer; X = 5cm
The length of all three sides would be 13cm, 13cm and 10cm.
Step-by-step explanation: First of all the given triangle is an isosceles triangle which means two sides measure 2x + 3. The third side measures 2x. The perimeter measures the entire length of the triangle, which means, perimeter equals
(2x + 3)+ (2x + 3)+ 2x = 36
2x+3+2x+3+2x=36
6x + 6 = 36
Subtract 6 from both sides of the equation
6x = 36 -6
6x = 30
Divide both sides of the equation by 6
X =5cm.
Answer:
A
Step-by-step explanation:
since both equations express y in terms of x we can equate the right sides
x + 7 = - 2x + 19 ( add 2x to both sides )
3x + 7 = 19 ( subtract 7 from both sides )
3x = 12 ( divide both sides by 3 )
x = 4
substitute x = 4 into either of the 2 equations for y
y = x + 7 ⇒ y = 4 + 7 = 11
solution is (4, 11 )