112+8 each day
112:8=14 so for each 14 days they had 8 acres extra until they finish early 1 day so they did not had to work the 15th day.
Since 15 days were scheduled with 112 each day they plough 112•15=1,680 acres
Answer:
The numbers are 23 and 7
Step-by-step explanation:
1. Set up the equations
Let x = the greater number
and y = the smaller number. Then
(1) x - y = 16
4y = 4 times the smaller number and
4y - 5 = 5 less than 4 times the smaller number. Then
(2) x = 4y - 5
You have a system of two equations:
2. Solve the equations
The larger number is 23; the smaller number is 7.
3. Check
OK.
Answer:
The answer to your question is: 2.26%
Step-by-step explanation:
Data
densities 2.49 g/cm3, 2.56 g/cm3, 2.72 g/cm3
accepted value = 2.65 g/cm3
Process
mean = (2.49 + 2.56 + 2.72) / 3 = 7.77 / 3
= 2.59 g/cm3
% error = | approx. - exact| / exact x 100
% error = | 2.59 - 2.65 | / 2.65 x 100
% error = | -0.06| / 2.65 x 100
% error = 0.06/2.65 x 100
% error = 2.26 %
y = x + 4
move +4 to the other side
sign changes from +4 to -4
y-4= x+4-4
y-4= x
Answer:
x=y-4