32 is the geometric mean of 16 and 48.
The slope is 1.
Every time it goes up 1, it goes to the right 1.
Let the 1st number be x; 2nd number be y; 3rd number be z.
x + y + z = 79
x = number we are looking for.
y = x * 5 ==> 5 times the first
z = x + 16 ==> 16 more than the first
Therefor,
x + (x * 5) + (x+16) = 79
1st step, multiply the 2nd number: x * 5 = 5x
x + 5x + x + 16 = 79
Add all like numbers:
7x + 16 = 79
To get x, transfer 16 to the other side and change its sign from positive to negative.
7x = 79 - 16
7x = 63
To get x, divide both sides by 7
7x/7 = 63/7
x = 9
To check. Substitute x by 9.
x + (x * 5) + (x+16) = 79
9 + (9 * 5) + (9 + 16) = 79
9 + 45 + 25 = 79
79 = 79 equal. value of x is correct.
1 cm = 20 feet
the triangle's sides are 4 cm, 5 cm, and 6 cm
multiply the amount of cm with 20 feet
4(20) = 80 feet
5(20) = 100 feet
6(20) = 120 feet
Simplify, divide 10 from all numbers
80/10 = 8
100/10 = 10
120/10 = 12
8, 10, 12 is your answer
hope this helps
