To solve by substitution, you need to fill in the value for either x or y. Since y = x + 5, you already have the y value. It's x + 5. Now you need to find x before you can go any further. So let's take 5x + y = 3 and fill x + 5 in for y.
5x + y = 5
5x + x + 5 = 3
Now solve for x.
5x + x + 5 = 3
6x + 5 = 3
6x = 3 - 5
6x = -2
x = -2/6 or -0.33
Now solve x + 5 for y.
y = x + 5
y = -0.33 + 5
y = 4.67
So x = -0.33 and y = 4.67
Step-by-step explanation:
the second one and the third one are similar shapes to i
1 foot is 12 inches
Convert everything to inches:
28 x 12 = 336 in.
39 x 12 = 468 in.
Add all the inches together:
336 + 468 + 7 + 8 = 819 in.
The answer is 819 inches.
-30 -29 -28 is the correct answer
