10+10+10+10+10+1+1+1+1+1+1+1+1=58
Answer:
z = -4
Step-by-step explanation:
I'm going to assume you mean solve for z.
5z - 8 = -28
add 8 to both sides.
5z = -28 + 8
5z = -20
divide both sides by 5
z = -4
Position vector R = < 4,0,1>
(given point)
normal vector n = < 3,-1,9>
equation:
n(r-R) = 0
3(x-4) - y + 9(z-1) = 0
If a, b, c is an arithmetic sequence then a + c = 2b
a = 5, b = 9, c = 15
subtitute
a + c = 5 + 15 = 20
2b = 2 · 9 = 18
20 ≠ 18
Answer: The sequence 5, 9, 15 is not an arithmetic sequence.
Answer:
56 degrees
Step-by-step explanation:
