Answer:
(x + 2)^2 - 11.
Step-by-step explanation:
f(x) = x^2 + 4x - 7
Now x^2 + 4x = (x + 2)^2 - 4 so we have:
f(x) = (x + 2)^2 - 4 - 7
f(x) = (x + 2)^2 - 11.
Given:
Principal = 200
interest rate = 4% per annum
term = 1 year
Simple Interest = Principal * interest rate * term
S.I. = 200 * 4% * 1
S.I = 8
Simple interest earned is $8.
Answer:
Each month Manuel reads 6 novels so you get
n = 6mn=6m
If you plug in 13 for m we get
n = 6(13) = 78n=6(13)=78
Manuel needs to read 78 novels in 13 months.
Answer:
(a) 129600 J
(b) 81000 J
Step-by-step explanation:
The work done is given by the product of force and the displacement in the direction of force.
Force, F = 500 N
distance, d = 324 m
(a) friction force, f = 100 N
The work done is
W = (F - f) x d
W = (500 - 100) x 324
W = 129600 J
(b) Friction, f = 250 N
The work done is
W = (F - f) d
W = (500 - 250) x 324
W = 81000 J
