Answer: 2 < x < 16
The triangle inequality theorem says that if we have a triangle with sides a,b,c then
b-a < c < b+a
with b being longer than 'a'
In this case, a = 7 and b = 9 and c = x
so we have
b-a < c < b+a
9-7 < c < 9+7 .... replace a with 7, replace b with 9
2 < c < 16
2 < x < 16 .... replace c with x
So x can be any number between 2 and 16. The value of x cannot be equal to 2. Also, x cannot be equal to 16 either.
The answer is -2. The inverse operation is when you do the opposite of the equation. In this case, you subtract 3 by 5. (not 5 by 3) Your result will be -2. Now plug -2 into x to check if it's true.
-2 + 5 = 3
3 = 3
It works! We can conclude here that x = -2.
I hope you understood! Have a good day :)
Answer:
a) 3 multiplied by x exponential 2 plus two multiplied by y plus half
b) three multiplied by the square of x plus two multiplied y plus one divided by two
c) I just split the equation into parts and started translating them individually to words
