Answer:
C. Yes, because every x- and y-value is positive
Answer:
cos60° = 
Step-by-step explanation:
Using the cofunction identity
• cos(90 - x)° = sinx°, hence
sin30° = cos(90 - 30)° = cos60° = 
Answer:

Step-by-step explanation:
3(x - 4) = 11x
Expand the brackets:
3x - 12 = 11x
Subtract 3x from both sides to isolate the -12:
3x - 12 = 11x
3x - 3x - 12 = 11x - 3x
-12 = 8x
8x = -12
Divide both sides by 8:

Simplify fraction:


Hope this helps!
Answer:
Step-by-step explanation:
Similar triangles

Cross multiply
2*(x+2) = 3*x
2x + 2*2 = 3x
2x + 4 = 3x
Subtract 2x from both sides
2x + 4 -2x = 3x - 2x
4 = x
x = 4
Answer:
357.5ft deep
Step-by-step explanation:
Every second, the shark descend 35.75ft. In ten seconds the shark will have gone 10 times deeper. 35.75 times 10 is 357.5.