The probability is 4/12 or 1/3
because the total of fish is 12 and the platy fish is 4 or 4 parts of the total 12.<span />
Answer:
When (-1,-4) is substituted into the second equation, the equation is true.
The ordered pair (-1,-4) is a solution to the system of linear equations.
When (-1,-4) is substituted into the first equation, the equation is true.
Step-by-step explanation:
Given
Required
What is true about 
To do this, we substitute -1 for x and -4 for y in both equations;
For
<em>Hence: </em>
<em> is true for </em><em></em>
For
<em>Hence: </em><em> is true for </em>
Answer:
6 mins, and the altitude will be 16,800 ft
Step-by-step explanation:
1st: Subtract 3000 from 34800
2nd: Multiply 2 to 2800
Keep doing this until you get the same altitude for each one.
Answer:
1. 5 hours
2. x<2000-637 (he can spend $1363 on eveything else)
3. $15.5
Step-by-step explanation:
Answer:
(x - 10)(x + 8)
Step-by-step explanation:
x² - 2x - 80
Consider the factors of the constant term (- 80) which sum to give the coefficient of the x- term (- 2)
The factors are - 10 and + 8 , since
- 10 × 8 = - 80 and - 10 + 8 = - 2 , then
x² - 2x - 80 = (x - 10)(x + 8)
