Because x,y,z form a geometric sequence, therefore the common ratio is
r = y/x = z/y
That is,
y² = xz (1)
We are given:
x + y + z = 18
Therefore
x + z = 18 - y (2)
Also,
x² + y² + z² = 612
Therefore, from (1), obtain
x² + z² + xz = 612
(x + z)² - xz = 612
From (1) and (2), obtain
(18 - y)² - y² = 612
324 - 36y + y² - y² = 612
-36y = 288
y = -8
Answer: y = -8
x = 5
Step-by-step explanation:
I wasn't sure if you needed just x or if you needed the other angles so I did both.
Answer:
B
Step-by-step explanation:
The Domain is the X- value so that makes it the domain and you have to order it correctly
Answer:
y=4/3x-20
Step-by-step explanation:
type this into Desmos
Answer:
Tan is the ratio of "opposite" side to "adjacent side
Cos is the ratio of "adjacent" to "hypotenuse"
Sin is the ratio of "opposite" to "hypotenuse"
We will write the trig ratios with respect to the angle "x"
Opposite Side is "c"
Adjacent Side is "b"
Hypotenuse is the side opposite of 90 degree angle, "a"
Now, let's write the ratios:
Step-by-step explanation:
