Answer:
a) 36°
b) 37°
Step-by-step explanation:
a) x=14 y=10
tan(0) = 10/14
0 = tan-1 (10/14)
0 = 36
b) x=17 y=13
tan(0) = 13/17
0 = tan-1 (13/17)
0 = 37
A) the hourly rate is $15
b) each triangle is twice as big as the one before, giving a 1:2 ratio.
c) the slope is 15
Answer:
y = 4 cosx
Step-by-step explanation:
The standard form of cosine is
y = acos(bx)
where amplitude = | a |
with maximum value a and minimum value - a
The only expression in this form is
y = 4cosx
Answer:
Center: (-5,10)
Radius: 2
Step-by-step explanation:
The equation of the circle in center-radius form is:
Where the point (h,k) is the center of the circle and "r" is the radius.
Subtract 121 from both sides of the equation:
Add 10x to both sides:
Make two groups for variable "x" and variable "y":
Complete the square:
Add inside the parentheses of "x".
Add inside the parentheses of "y".
Add and to the right side of the equation.
Then:
Rewriting, you get that the equation of the circle in center-radius form is:
You can observe that the radius of the circle is:
And the center is: