Answer:
AB = 32
Step-by-step explanation:
Since line l bisects AB at point M, we have AM = MB.
AM = 4(4) = 16, MB = 5(4) - 4 = 16.
So AB = AM + MB = 16 + 16 = 32.
You can rearrange polynomials through the complete the square form in order to easily transform graphs:
Where ax^2 + bx + c = 0
Becomes
a (x + b/2)^2 -ab^2/4 + c =0
Where a is the vertical stretch, the constant ( -ab^2/4 + c) the translation unites up or down and the b/2 being the translation horizontally.
You can also find turning points much easier using the complete the square form
Eg. (x-3)^2 + 5 = 0
Since any x value (negative or positive) will become positive
(x-3)^2 > or = 0
Therefore minimum point is where x = 3 to equate to 0 which would give a y value of 5 therefore minimum point is
(3,5)
Other reasons for rearrangement include setting the equation of the form y= ax^2 + bx +c to y=0 to find the roots (x-intercepts) of the equation.
Answer:
I think the answer is option 2
I think there is data that is missing. Please attach the drawing so that to help you
The answer is 75
First you subtract 180 and 165 to find that smallest angle inside the triangle(15). Then you add 15 and 90,the two angles you know, and do 180 - 105= 75.
The trick is that all angles inside a triangle equal 180 degrees. Hope this helps!
