Answer:
15 or -5
Step-by-step explanation:
√(25-40x)= x-10
Squaring both sides
25 - 40x = (x -10)²
25 - 40x = x² -20x + 100
x² - 20x + 40x + 100 - 25 =0
x² +20x = -75
x² + 20x + 10² = -75 + 100
(x + 10)² = 25
x - 10 = ±√25
x - 10 = ±5
x = ±5 + 10
x = 15 or x = -5
Answer:
80
Step-by-step explanation:
The sides of a triangle always add up to 180. 80+20+?=180
Answer:
5) x=10
6) x=7
7) x=3
8) x=12
Step-by-step explanation:
5) 19=2x-1
19+1=2x
20=2x
x=10
6) 3x-6=15
3x=21
x=7
7)10=2x+4
10-4=2x
6=2x
x=3
8) x+3=2x-9
3=x-9
x=12
Answer:
Dependent variable: $10/hr Independent Variable: Number of Hours spent on the bike. Equation y=10h
Step-by-step explanation:
The $10/hr is dependent because that never changes, the independent variable however changes. The equation will matter upon the independent variable h.
Hope this helps.