Answer:

Step-by-step explanation:
...........
Answer:
Zero
Step-by-step explanation:
In math, an identity is a number, n, that when added to other numbers, gives the same number, n. The additive identity is always zero. This brings us to the identity property of addition, which simply states that when you add zero to any number, it equals the number itself
Answer:
x = 16.
Step-by-step explanation:
The 3 angles sum to 180 degrees so:
x + 19 + 6x - 7 + 56 = 180
7x + 68 = 180
7x = 112
x = 112/7 = 16.
You have to find out what can go into both five can go into both so 10÷5 is two and 25÷5 is five so the answer is 2/5
D
7•4 =28, -5•0 =0... 28+0=28