Here's something I learned, if that's a go math text book the answers are always in the last couple pages of the book
Answer: By the 8th week.
Step-by-step explanation:
Let the time that matteo and luca have the same amount of money be represented by x.
The information given in the question can be formed into an equation as:
400 - 10x = 200 + 15x
Collect like terms
400 - 200 = 15x + 10x
200 = 25x
x = 200/25
x = 8
Matteo and Luca will have the same amount of money by the 8th week.
Answer: 10
<u>Step-by-step explanation:</u>
varies directly means:
Step 1: solve for k ⇒
Step 2: plug in the given value and k to solve for the missing value:
42(5) = 21(x)
2(5) = x
10 = x
Answer:
<em>{ - 2 , 8 } </em>
Step-by-step explanation:
( x² - 6x ) = 2
4² = ( x² - 6x )
x² - 6x - 16 = 0
- 6 = - 8 + 2
- 16 = - 8 * 2
( x - 8 )( x + 2 ) = 0 ⇒ = - 2 , = 8
<em>{ - 2 , 8 }</em>