Answer:
see below
Step-by-step explanation:
2x^2 -2x-12 = 0
Factor out 2
2(x^2 - x -6) = 0
Factor inside the parentheses
2( x-3)(x-2)=0
Using the zero product property
x-3 =0 x-2=0
x=3 x=2
The graph crosses the x axis when x=3 and x=2
Answer:
x = 4
Step-by-step explanation:
Move all terms that don't contain x to the right side and solve.
Answer: The tall cliff is 118.20 feet tall and the short cliff is 70.32 feet tall.
If you draw a picture with 2 cliffs and a river in the middle, you have find 2 right triangles. In each triangle the adjacent side to our known angle is the river of 90 feet. And the unknown side is the opposite leg.
Therefore, we can set up a tangent equation.
From the top of the short cliff to the top of the tall cliff, we can right and solve the following trig equation:
tan(28) = x /90
x = 47.88
From the top of the short cliff to the bottom, we can right and solve the following trip equation.
tan(38) = x/90
x = 70.32
The 70.32 is also the height of the short cliff. And adding the two answers together will give you the height of the tall cliff.
Answer:
$
Step-by-step explanation:
$
Answer:
Step-by-step explanation:
She cuts 3 equal length strips of the paper, which was originally 8 ft long. This means that all we have to do is 8 divided by 3, which = 8/3. Change this fraction to proper, getting 2 and 2/3. The correct answer, therefore is A.
