Answer:
k = 20
Step-by-step explanation:
t1 = a = k-4
a = k - 4
t2 = ar = k
(k-4)r = k - 4
r = k/(k-4)
t3 = ar^2 = k + 5
(k - 4)(k/k - 4)^2 = k+5
k^2/k-4 = k+5
k^2 = (k+5)(k-4)
k^2 = k^2 -4k +5k -20
0 = k -20
k =20
Answer:
Variable or Symbol
Step-by-step explanation:
Answer:
it would be b
Step-by-step explanation:
We can use proportion to solve this problem.
70 ---------- 100% We know that 70 is 100%
16.1 -------- x
Cross multiplying now
- its the result
Answer:
proof given below
Step-by-step explanation:
Combine the fractions by making the denominators the same:
Use the trigonometric identity :
Factor out 2 from the numerator:
Cancel the common factor:
Hence proved.
Learn more about trigonometric identities here:
brainly.com/question/27938536