A contractor charges $1,200 for 100 square feet of roofing installed. at this rate, how much money does it cost to have 1,100 square feet installed

$13,200

Step-by-step explanation:

To solve this problem, we need to cross multiply. Lets input the values (1,200, 100, 1,100) as shown below:

Next we cross multiply. We multiply 100 and x, and we multiply 1,200 and 1,100.

Now, lets put the values above back into the equation:

The last step is to divide 1,320,000 by 100.

It will cost $13,200 to have 1,100 square feet installed.

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.