Answer:The ansewers are c and d.
Step-by-step explanation:
The function f(x)=x is really y=x.
Step-by-step explanation:
Let's represent the two integers with the variables
and
.
From the problem statement, we can create the following two equations:


With the first equation, we can subtract
from both sides to isolate the
variable to the left-hand side:

Now that we have a value for
, we can plug it into the second equation and solve for
:


Now, let's move everything to one side of the equation:

Factoring this quadratic will give us two values for
:


Since we now know
, we can plug this back into either of the original equations to get a value for
, which will be
.
So the two numbers that sum to
and have a product of
are
.
(4,-1)
These are the only numbers that weren’t repeated yet.
If the two rectangles are similar, their sides must be proportional. We can figure this out by setting up a proportion. We need to make sure to match up the correct sides though. We know the two longer sides must match up, so 6 goes with 60, and 3 goes with 30:
3/6=30/60
If we reduce the fractions, we get:
1/2=1/2
Therefore, the rectangles are similar. One of them is just rotated.
The common ratio is the fifth term divided by the fourth term: -40/-8 = 5.
The seventh term is :