Notice that in the expression n - 8,
the eight is the thing being subtracted.
We could read it like this: "Eight subtracted from a number."
So we can immediately see that the last option is not correct. It's the opposite of what we want. The third option is the same as the last, just worded differently: The number 8, decreased by a number n.
The second option is correct: A number n, but eight fewer than that.
n - 8
Answer:
a). L=53+3 D.... equation
b). Total length of the road after the crew has worked 31 days=146 miles
Step-by-step explanation:
Step 1
Find an expression for calculating the total length of a the road as follows;
L=F+(M×D)
where;
L=total length of the road in miles
F=starting length of the road in miles
M=number of miles per day added
D=number of days the crew has worked
In our case;
L=unknown
F=53 miles
M=3 miles per day
D=unknown
L=53+(3×D)
L=53+3 D.... equation
Solve for L when D=31 days
L=53+(3×31)
L=53+93=146
Total length of the road after the crew has worked 31 days=146 miles
Answer:
1. 24 2. 20 3. 1.75(I think) 4. 11
Step-by-step explanation:
3 might be incorrect but The others seem more correct than ever :)
Answer: It's B
Step-by-step explanation:
The product of 7 and 86 is 602.
