<h2>
19 X 33 = 627, justified.</h2>
Step-by-step explanation:
We have,
19 × 33 = 627
Use the fact and justify.
L.H.S. = 19 × 33
= (20 - 1) (20 + 13)
Using the identity,
(x - a)(x + b) = 
- (a - b)x - ab
Here, x = 20, a = 1 and b = 13
= 
- (1 - 13)20 - 1(13)
= 400 - (- 12)20 - 13
= 400 + 240 - 13
= 640 - 13
= 627
= R.H.S., justified.
Thus, 19 X 33 = 627, justified.
If I get a thanks I’ll answer on a diff comment
Answer:
ln(5/3)
Step-by-step explanation:
The desired limit represents the logarithm of an indeterminate form, so L'Hopital's rule could be applied. However, the logarithm can be simplified to a form that is not indeterminate.
<h3>Limit</h3>
We can cancel factors of (x-1), which are what make the expression indeterminate at x=1. Then the limit can be evaluated directly by substituting x=1.
Answer:
$2.85
Step-by-step explanation:
30×2=60
30+15=45
60+(45×5)=?
45×5=225
60+225=285
$2.85
Cuz every 100cents is one dollar
207$ - 15$ = 192$
192$ : 8 = 24$
Answer: Each book costed 24$.
