It's the last choice. In the top row you have the 1's that are the coefficients on the x and the y, and the solution for that equation is 21; in the second row you have the 5 from the x and the 4 from the y and the solution for that equation which is 20. I'm more used to writing them down instead of across, but there you have it anyways
Answer:
y=4x-7
Step-by-step explanation:
8x-2y=-14
-8x = -8x
-2x=-8x-14
-2= -2 -2
y= 
y=4x-7
Where’s the rest of the question??
Let the smaller of the two numbers be x. Therefore the larger number is 1 bigger, x+1.

We can solve this equation for x, which will be one of our two numbers.



Now that we've found x, we can find x + 1. In this case,

.
Therefore, the two numbers are 29 and 30.
Answer:
5 yd
Step-by-step explanation:
Use Pythagorean theorem,
Hypotenuse² = base² + altitude²
= 3² + 4²
= 9 + 16
= 25
Hypotenuse = √25 = √5*5 = 5 yd