Answer:
x = 5
Step-by-step explanation:
The sum of interior angles in a triangle is 180°
91° + 10x - 4° + 8x + 3° = 180° add the like terms
90° + 18x = 180°
18x = 180° - 90
18x = 90° divide both sides by 18
x = 5
Method1:parabola
y = x^2 - 2x + 8
y-7 = (x-1)^2 ; parabola
turning point is (1,7)
method2:diff
y = x^2 - 2x + 8
y' = 2x -2 = 0 ==> x = 1,
y=7
Answer:
6 Hours
Step-by-step explanation:
First add all the times spent at the media center, then divide all the times by 5, since there is 5 times.
all the times added up = 30
30 divded by 5 = 6
Answer:
48 liters
Step-by-step explanation:
First container = x
Second container has twice as much oil.
Second container = 2x
13 liters of oil was used from first container.
x - 13
7 liters of oil was used from the second container.
2x - 7
Second container has 3 times more oil than the first one.
2x - 7 = 3(x - 13)
x - 7 = 3(x - 13)
x - 7 = 3x - 39
2x = 32
x = 16
First container = 16 liters
second container = 16 x 2 = 32 liters
Total = 16 + 32 = 48 liters
The original variable was d, however, the answer is: d=8.1
