6 minutes because 6 x 2 is 12.
Okay so here's how i think you solve it
both triangles have the same ratio, so set it as 3/4.5 (the smaller triangle) is equal to X/13.5 (the 9 added to the 4.5)
multiply 13.5/1 on both sides to get x alone
13.5 3
-------- x ------- = x x= 9
1 4.5
For either square root to exist, you require that
. This is true for all
, since
is always non-negative. This means the domain of
as a function of
is all real numbers, or
or
.
Now, because
is non-negative, and the smallest value it can take on is 7, it follows that the minimum value for the positive square root must be
, while the maximum value of the negative root must be
. This means the range is
, or
, or
![(-\infty,-\sqrt7]\cup[\sqrt7,\infty)](https://tex.z-dn.net/?f=%28-%5Cinfty%2C-%5Csqrt7%5D%5Ccup%5B%5Csqrt7%2C%5Cinfty%29)
.
Pull out a 5 from the first parenthesis
(5x+15) = 5(x+3)
Pull out a 25 from the second parenthesis
(25x+75) = 25(x+3)
(5x+15) + (25x+75) = your first answer = 5(x+3) + 25(x+3)
Answer:
try to look out for words such as more than, less than, twice as much, half as much, in addition to, took away something, etc
Step-by-step explanation:
hope this helped!
