Answer:
Step-by-step explanation:
Squaring both sides of the equation would give 
which then simplifies to 
We can then subtract 7 from both sides to get 
Then we can subtract x from both sides, which cancel out and we get 
Then we need to divide both sides by -2 to get 
Then we need to square both sides 
to get rid of the square root to get 9 = x + 6
Then finally subtracting 6 from both sides we get 3 = x
Answer:
4
Step-by-step explanation:
2 + 2 = 4
Length of x is 98.2 m
<u>Step-by-step explanation:</u>
Step 1:
Use the trigonometric ratio tan 27° to find the common side of both the right angled triangles.
tan 27° = opposite side/adjacent side = opposite side/9
∴ Opposite side = 9 tan 27° = 9 × - 3.27 = -29.46 m
Step 2:
Use this side and trigonometric ratio cosine to find the value of x.
cos 49° = adjacent side/x = -29.46/x
∴ x = -29.46/cos 49° = -29.46/0.30
= 98.2 m (negative value neglected)
Not a function because of the vertical line test.
Domain is [-2,∞] since the left most point is -2 and the right is unbounded.
Range is (-∞,∞) since it is not bounded in terms of y.
