The perimeter is just adding all the sides together.
a.) 180 = 40 + 40 + x + x
180 = 80 + 2x Subtract 80 on both sides
100 = 2x Take 1/2 of 100 to get x
x= 50cm
b.) 1000 = 150 + 150 + x + x
1000 = 300 + 2x Subtract 300 on both sides
700 = 2x Take 1/2 of 700 to get x
x = 350
Answer:
224
Step-by-step explanation:
We will need the following rules for derivative:
Sum rule.
Constant multiple rule.
Power rule.
Slope of y=x is 1.


by sum rule.
by constant multiple rule.
by power rule.

Now we need to find the derivative function evaluated at x=9.



In case you wanted to use the formal definition of derivative:

Or the formal definition evaluated at x=a:

Let's use that a=9.

We need to find f(9+h) and f(9):


(used foil or the formula (x+a)(x+a)=x^2+2ax+a^2)

Combine like terms:





Ok now back to our definition:


Simplify by doing 1044-1044:

Each term has a factor of h so divide top and bottom by h:





Answer:
45:60. 30:40
Step-by-step explanation:
There are not parallel because 2/11≠3/14
Answer:
Hello! answer: 20
Step-by-step explanation:
These are vertical angles meaning they will have the same measure so... 20 + 40 = 60 20 × 3 = 60 therefore x = 20 hope that helps!