LIVE TEST NEED HELP Several students made comments about this image C B D Which comment is true? "If I know the measures of A an
d B, I can subtract those measures from 180 to find the measures of the two angles." "If I know the measure of C, I can find the measure of angle A because they are the same." “if I know the measures of angles C and B, I can find the measures of A and D." "If I know the measure of angle A, I can find the measure of angle D by subtracting from 180"
1 answer:
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I don’t know how to do Question One
Answer:
see explanation
Step-by-step explanation:
(a ) calculate the slope m using the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = A(0, 6) and (x₂, y₂ ) = B(3, 0 )
=
=
= - 2
(b)
given a line with slope m then the slope of a line perpendicular to it is
= -
= -
=
(c)
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
(0, 6 ) is the y-intercept ⇒ c = 6
y = x + 6 ← equation of perpendicular line
Answer:
- When we are having a rational expression i.e. a expression of the type:
Where f(x) and g(x) are polynomial functions.
Now the domain of this rational expression is whole of the real numbers except the points where the function g(x) will be zero.
Hence we have to exclude the points where the given denominator quantity is zero.
- Let us consider an example as:
Let R(x) denote the rational function as:
Now the domain of this rational function will be whole of the real line minus the points where the denominator is zero.
We know that (x-2)(x-3) is zero when x=2 or x=3.
Hence, the domain of R(x) is: R- {2,3}.