The mean is all of them added together divided by the number, so multiple the mean by the number of sides, 3, and that's the perimeter. 18 x 3 = 54
Answer:
The answer is Y = - (22)/(7 )
Step-by-step explanation:
The parenthesis do not mean anything write 22/7 as a fraction.. why did you report my answer so rude
Answer:
Step-by-step explanation:
18 + x ≤ 28
x ≤ 28 - 18
x ≤ 10
1 ≤ x ≤ 10
Answer: (5, -2)
Step-by-step explanation:

Substitute x-7 for y in 2nd equation

Solve for y

Answer:
3
Step-by-step explanation:
If I remember how to solve these questions correctly, if there is a triangle that is 45 degrees, the hypotenuse will be times the square root of 2 of the other two sides (which are equal to eachother). Hope this helped!