Answer: 7.2 $ will be needed to get 6 Euros.
Step-by-step explanation:
Given : 3$ could be exchanged for 2.5 euros
That means :
To get 2.5 euros , dollars needed are = 3$
By using Unitary method:
To get 1 euro , dollars needed are = 
$
To get 6 euros , dollars needed are = 
$
Thus 7.2 $ will be needed to get 6 Euros.
Answer:
Follows are the solution to this question:
Step-by-step explanation:
The principal characteristics of algebra, a significant degree of complexity, and the logical scientific evidence or universality of application could be considered as an argument. It often operates in maths without any equivalent concepts and methods throughout the real world. In some cases, computational processes and approaches are applied in different fields without a great understanding of the essence of the process. Another argument is the use of formal logic as well as the accuracy of evidence extracting.
Answer:
z ≥ 2
Step-by-step explanation:
Step 1: Write inequality
-7z - (-5z - 4) ≤ -3z - 2 + 4z
Step 2: Solve for <em>z</em>
- Distribute negative: -7z + 5z + 4 ≤ -3z - 2 + 4z
- Combine like terms: -2z + 4 ≤ z - 2
- Add 2z to both sides: 4 ≤ 3z - 2
- Add 2 to both sides: 6 ≤ 3z
- Divide both sides by 3: 2 ≤ z
- Rewrite: z ≥ 2
Answer:
Option 1.
Step-by-step explanation:
It's option 1.
You divide (b/a) by 2 then square it, then subtract this from both sides of the equation. It is the process of Completing the Square.
Answer:
175 pages
Step-by-step explanation:
Let's call 'd' the number of days before the deadline, and 'n' the total number of pages of the book.
We have the following equations:
(1) 
--> if we multiply the number of pages per day (25) times the number of days (d), we get the total number of pages of the book (n)
(2) 
--> he reads 8 pages more per day (so, 25+8), for a number of days equal to (d-2) (d is the deadline), and he reads a total of n-10 pages (because only 10 are left)
We can substitute (1) into (2) and we find:
So, the deadline is 7 days, and from eq.(1) we find the number of pages in the book:
