Answer:
The size is 37.5 degrees
Step-by-step explanation:
The total angle in the triangle is 180
Since the other two angles are congruent. it means that they are equal
Let us call each of the angles x
Mathematically,
x + x + 105 = 180
2x = 180-105
2x = 75
x = 75/2
x = 37.5
(Observed data - Accepted standard) divided by the accepted standard. Then all of that is multiplied by 100.
( ( O - A ) / A) * 100
The cubic function is 
Option D is correct
Step-by-step explanation:
We need to find the cubic function with the given zeros -6,7,-4
If -6,7,-4 are zeros of the function then:
x=-6, x=7 and x=-4
=> x+6=0,x-7=0 and x+4=0
Multiplying these terms to find the cubic function:
(x+6)(x-7)(x+4)
Solving:

So, the cubic function is 
Option D is correct
Keywords: cubic function
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Answer- Rational because is a repeating decimal