Simplify the expression Please help I will brainliest

and tell you me how you go it, not just the answer please!❤️

3.9x+0.4

Step-by-step explanation:

6.2x-8.7-2.3x+9.1  = 6.2x-2.3x+9.1-8.7

By arranging the like terms together, it makes it easier to calculate.

6.2x-2.3x+9.1-8.7 = 3.9x+0.4

(6.2x-2.3x = 3.9x)

(9.8-8.7 = 0.4)

the infinity sign

step-by-step explanation:

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )