Answer:
Step-by-step explanation:
Given the system of two equations:
Add these two equations (left side add to left side and right side add to right side):
Substitute into the first equation:
A triangle has two sides of length 9 and 7. What is the smallest possible whole-number length for the third side?
2 answers:
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In order to simplify this expression, we need to multiply the numeric values together and the variables together.
So we have:
Therefore the correct option is the third one.
Answer:
Charlie is incoerre
Step-by-step explanation:
Given that :
Line of sight to top of flagpole = 16 feets
Angle of elevation = 60°
The height of the flagpole :
Applying trigonometry to the drawing in the attached picture :
We use:
Sinα = opposite / hypotenus
This enables us to use the value of the hypotenus (line of sight) to obtain the missing height value (h)
Sin(60°) = h / 16
h = 16 * sin 60
h = 16 * 0.8660254
h = 13.856406
Hence flagpole is about 13.86 feets high
Charlie's reasoning is incorrect, the line of sight constitutes the hypotenus and not Adjacent and hence, shoul
