Answer:
7-x
This is because 7 itself is decreased by a number, if for e.g that number was 5, the expression would mean 7-5= 2
Answer:
1
Step-by-step explanation:
The answer is zero. because the 4 and -4 cancel out.
Answer:
1.Yes
2.No
3.No
4.Yes
Step-by-step explanation:
9514 1404 393
Answer:
15 m
Step-by-step explanation:
The area of the square attached to the third side is the sum of the areas of the other squares:
81 m² +144 m² = 225 m²
The side length is the square root of this:
? m = √(225 m²) = 15 m
The length of the indicated side is 15 m.