The answer is 277. If you use PEMDAS you would multiply 9x27. Then 2x31. Then add them 243+62. Then subtract 28. Which gives you 277
14x + 7y = 217 > lets solve for y first > so 14(0) + 7y = 217 > 7y = 217 > y = 7/217 > y = 31 > 14x + 7(0) = 217 > 14x = 217 > x = 14/217 > x = 15.5
Now but the 31 in the y place and the 15.5 in the x place and see if it matches up with 217
Step-by-step explanation:
Distance = rate × time
If B is the rate of the boat, and C is the rate of the current, then we can write two equations:
18 = (B + C) × 3
18 = (B − C) × 9
Simplifying the equations:
6 = B + C
2 = B − C
Add the equations together to eliminate C:
8 = 2B
B = 4
Plug into either equation to find C:
C = 2
The boat's rate is 4 mph, and the current's rate is 2 mph.
Answer:
Reorder factors in M
%
N
.
N
M
% is what i got on a online calculator called M a t h w a y
Step-by-step explanation:
I hope this is what you are looking for sorry if it is wrong.
Answer:
4.502
Step-by-step explanation:
Area of a square is given by
A=L*L = Length squared
20.275=L squared
Applying the square root to both sides of the equation gives L= 4.50222...
L = 4.502 correct to 4 significant figures