Answer:
Step-by-step explanation:
2/3+1/3x=2x
moving all the x to one side
2/3=2x-1/3x
factoring out x
2/3=x(2-1/3)
dividing
(2/3)/(2-1/3)=x
Answer:
3
Step-by-step explanation:
The factor (x - 8) has 1 zero at x = 8
The factor (x + 3)² has a zero at x = - 3 of multiplicity 2
In total there are 3 zeros
Answer:
Step-by-step explanation:
Multiply each side by -5.
Switch signs when multiplying or dividing by a negative integer.
Given:
bottom of the plank or ground is 9 feet from the wall
length of the plant is 41 ft
height of the wall is unknown.
Let us use the Pythagorean theorem.
a² + b² = c²
a² + (9ft)² = (41ft)²
a² + 81 ft² = 1,681 ft²
a² = 1,681 ft² - 81 ft²
a² = 1,600 ft²
√a² = √1,600 ft²
a = 40 ft
The height of the wall is 40 ft.
