\begin{aligned} &2x+7y=1 &y=4x -8 \end{aligned}


2x+7y=1
y=4x−8


Is (4,8) a solution to the system?

Step-by-step explanation:

hello :

2x+7y=1 ...(*)

y=4x−8...(**)

(4;8) means x= 4 and y= 8

put this values in (*) and(**) :

2(4)+7(8) =1           62=1    false

8=4(4)-8          8=8   true

so :(4;8)  is not solution for this system.

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it