Answer:
Below.
Step-by-step explanation:
There are 2 similar triangles here.
The large one made from the tree, the trees's shadow and the line from top of the tree to the and of the shadow The other one is the small triangle inside the large one , made from emily , emily's shadow and line from top of emily's head to the end of the shadow.
Corresponding sides in these 2 triangles are in the same ratio, so if h is the height of the tree, then
h / emil's height = length of tree's shadow / length of emily's shadow
h / 6 = 18/5
5h = 6*18
5h = 108
h = 108/5
= 21.6.
The scale factor for emily's to the object = 5/18.
Answer:

Step-by-step explanation:
f(x) = 9x³ + 2x² - 5x + 4; g(x)=5x³ -7x + 4
Step 1. Calculate the difference between the functions
(a) Write the two functions, one above the other, in decreasing order of exponents.
ƒ(x) = 9x³ + 2x² - 5x + 4
g(x) = 5x³ - 7x + 4
(b) Create a subtraction problem using the two functions
ƒ(x) = 9x³ + 2x² - 5x + 4
-g(x) = <u>-(5x³ - 7x + 4)
</u>
ƒ(x) -g(x)=
(c). Subtract terms with the same exponent of x
ƒ(x) = 9x³ + 2x² - 5x + 4
-g(x) = <u>-(5x³ - 7x + 4)
</u>
ƒ(x) -g(x) = 4x³ + 2x² + 2x
Step 2. Factor the expression
y = 4x³ + 2x² + 2x
Factor 2x from each term
y = 2x(2x² + x + 1)

Answer:

Step-by-step explanation:
The given expression is:

We factor to get:

Cancel out the common factors to get:

We cancel further to get:

The correct chice is B.
Answer:
Graph is below
Step-by-step explanation:
I am going to use 3 points to make this graph
(0,0)
(-1,3)
(1,3)
Answer:
No, the equation is not a linear equation.
Step-by-step explanation:
There is the x^2 thing that doesn't make it a linear equation.