Answer
Elena must have substracted 1/2x from both sides of the equation.
Lin must have multiplied both sides of the equation by 2
Explanation
The equation given is

For Elena to have arrived at

Then Elena must have substracted 1/2x from both sides of the equation.
That is;

For Lin to have arrived at

It shows Lin must have multiplied both sides of the equation by 2
That is;
Answer:
The area of the cone is "1,695.6 cm³".
Step-by-step explanation:
The given values are:
Diameter of cone,
d = 18 cm
then,
Radius,
r = 
= 
= 
Height,
h = 20 cm
As we know,
⇒ Area of a cone = 
On substituting the given values in the above formula, we get
⇒ = 
⇒ = 
⇒ = 
⇒ = 
Answer:
7 feet
Step-by-step explanation:
If it is under .5 keep the whole number the same, if it is .5 or more round up. This is .3 so it is 7.
First divide -12 and 6
you should get -2.
now add that to 2.
-2 + 2 is 0
For every 21 minutes that people spend using their cell phone, the number of texts they send increases by 5.
(I just did the test)