Answer:
This equation y=3x2+12x−2 is in standard form, or ax2+bx+c . To find the axis of symmetry, we do x=−b2a . We know that a=3 and b=12 , so we plug them into the equation. So the axis of symmetry is x=−2 .
Step-by-step explanation:
Answer:
m = 5.33
Step-by-step explanation:
First we need to calculate angle N.
Sum of angles in a triangle is 180°
∠L + ∠M + ∠N = 180°
108°+25°+∠N = 180°
∠N = 180°-(108°+25°}
∠N = 180°-133°
∠N = 47°
Given side l = 12, to get m, we will use the sine rule.
l/sinL = m/sinM = n/sinN
12/sin108° = m/sin25°
m × sin108°= 12sin25°
m = 12sin25/sin108°
m = 5.071/0.951
m = 5.33
Evan is not correct. While 25 is 125% of 20, it was <em>not</em> 125% more. That would be adding on to the 100% already there, for a total of 225%. It's actually only 25% more because of this.
12-13= yx this is that expression