Answer:
-16
Step-by-step explanation:
distribute the 4: 4x-8=-72
add 8 to both sides: 4x=-64
divide by 4: x+-16
-8x + 4y = 20
-8x + 8x + 4y = 8x + 20
4y = 8x + 20
4 4
y = 2x + 5
a) The value of as a function of "x" is
b) The rate of change of the angle with respect to x is -0.000308rad/m
Find the complete question and diagram attached
Form the right-angled triangle shown:
Adjacent side = x
Opposite side = 250m
angle of elevation =
Using the SOH CAH TOA identity
Hence the value of as a function of "x" is
b) If x = 450m
Differentiate both sides with respect to "x"
Substitute x = 450m and into the resulting expression to have:
Hence the rate of change of the angle with respect to x is -0.000308rad/m
Learn more here: brainly.com/question/15580615
Given:
The relation is:
To find:
The pair of coordinates that clarify why this relation is not a function.
Solution:
A relation is called a function if there exist unique y-value for each x-value. In other words, if a relation has two outputs for a single input, then the relation is not a function.
The given relation is:
This relation has two y-values 5 and 6 for a single x-value 3. Since the y-value is not unique all all values of x, therefore the relation is not a function.
Hence, the pairs of coordinates (3,5) and (3,6) clarify that the given relation is not a function.