T = 4. first, you can add 2 to both sides of the equation. you get 4t = 16. then, you can divide both sides by 4 to isolate t.
Step-by-step explanation:
2x - 3y = 25
+ (5x + 3y = 10)
=> 7x = 35, x = 5.
Therefore 2(5) - 3y = 25, 3y = -15, y = -5.
The solution pair is (5,-5).
Answer:
top right corner
Step-by-step explanation:
1) the green line
- straight line
- shaded region is below the line
thus, y ≤ 3
2) the blue line
- straight line
- shaded region is below the line
thus, y ≤ x-2
3) the red line
- dotted line
- shaded region is above the line
thus, y > -x+5
4) the x-axis
- straight line
- shaded region is above the line
thus, y ≥ 0
Answer:
30, 5 , 21
Step-by-step explanation:
substitute the values of x into f(x) , then
f(- 5) = (- 5)² + 5 = 25 + 5 = 30
f(0) = 0² + 5 = 0 + 5 = 5
f(4) = 4² + 5 = 16 + 5 = 21
