x² + 10x = 26
x² + 10x + 25 = 26 + 25
x² + 5x + 5x + 25 = 51
x(x) + x(5) + 5(x) + 5(5) = 51
x(x + 5) + 5(x + 5) = 51
(x + 5)(x + 5) = 51
(x + 5)² = 51
x + 5 = ±√(51)
- 5 - 5
x = -5 ± √(51)
x = -5 + √(51) or x = -5 - √(51)
Answer: 3h + 0.9s
Step-by-step explanation:
90% is the same as 0.9 of..
Part A: 3x + 15 = 5x - 25
Part B: x = 20
Answer:

Step-by-step explanation:
Simplify the expression and you will get this.
hope this helps