2 tenths and 5 hundredths.
It is C (2, 1) I think it is because they intersect
Answer:
The answer to your question is:
Step-by-step explanation:
12.-
x² - 6x = 5
x² - 6x + (3)² = 5 + (3)²
x² - 6x + 9 = 5 + 9
(x - 3)² = 14
13.- x² - 6x = 12
x² - 6x + (3)² = 12 + (3)²
x² - 6x + 9 = 12 + 9
(x - 3)² = 21
x - 3 = ±√21
x1 = √21 + 3 x2 = -√21 + 3
x1 = 7.58 x2 = -1.58
14.- 2x² - 24x = - 20 Divide by 2
x² - 12 x = -10
x² - 12x + (6)² = - 10 + (6)²
x² - 12x + 36 = - 10 + 36
( x - 6) ² = 26
x - 6 = ±√26
x1 = √26 + 6 x2 = -√26 + 6
x1 = 11.1 x2 = 0.9
D: y=12.5x+15
Using the formula to find the slope given two points:
M= 140-40/10-2= 12.5
we can eliminate the other 3 choices without even finding the Y intercept.
Answer: 31. 16 ft
Step-by-step explanation:
The other part of the question is:
If the mirror is 34 feet from the cliff side, determine the height of the cliff.
We can solve this problem with geometry, if we imagine two righ triangles (figure attached):
-One formed by Fernando, who is 5.5 ft tall, and the ground
-The other formed by the height 
of the cliff, the cliff side and the ground.
In addition both triangles are congruent, hence we can use the following relation to find :
Iolating :
This is the height of the cliff
