Answer:
First number: 6
Second number: 2
Step-by-step explanation:
We can use system of equations to find the 2 numbers. Let's use x for the first number and y for the second number.
x+y=8
We have this equation because the first clue states that the sum of the first and second number is 8.
x-y=4
We have this equation because the second clue states that the difference between the first and second number is 4. Now that we have 2 equations, we can use the elimination method to find x and y.
x+y=8
x-y=4
Let's eliminate y. To eliminate y, you must add the 2 equations so that the y's can subtract each other. If this is confusing, think of it as this: (y+(-y)=0).
2x=12
x=6
Now that we know the value of x, we can plug this back into any of the equations to find y.
6+y=8
y=2
With x and y found, the first number is 6 and the second number is 2.
Answer:
x=-1
Step-by-step explanation:
Every section = (3/4)÷(3) = 1/4 acre
Let the constant stretch factor be x
then
3x + 4x + 2x = 72 Add the left side.
9x = 72 Divide by 9
x = 72/9
x = 8
Therefore the sides are
8*3 = 24
8*4 = 32
8*2 = 16
Total = 72 which checks.
