Answer:
Parallel line: - 1/2
Perpendicular line: 2
Step-by-step explanation:
Answer:
A(1) = -7
A(4) = -48
A(8) = -769
Step-by-step explanation:
Answer:
(a) 
(b) 
(c) At 4 weeks, when both will be seeing an average of 3 hours of TV.
Step-by-step explanation:
a) For the students, they start at X(0)=5 h and ΔX=-0.5 h/week.
We can write
b) For the professors, they start at X(0)=1 h and ΔX=+0.5 h/week.
We can write
c) The seew which they will be watching the same amount of hours will be the 4th week.
The amount of hours will be
The answer is A. just go by your placements
4a + 9b + 0c = 8 ⇒ 4a + 9b + 0c = 8
8a + 0b + 6c = -1 ⇒<u> 8a + 0b + 6c = -1</u>
0a + 6b + 6c = -1 12a + 9b + 6c = 7
12a + 9b + 6c = 7 ⇒ 24a + 18b + 12c = 14
4a + 9b + 0c = 8 8a + 6b + 12c = 0 ⇒ <u>24a + 18b + 36c = 0</u>
8a + 0b + 6c = -1 ⇒ 8a + 0b + 6c = -1 <u>-24c</u> = <u>14</u>
0a + 6b + 6c = -1 ⇒ <u>0a + 6b + 6c = -1</u> -24 -24
8a + 6b + 12c = 0 c = ⁷/₁₂
6b + 6(⁷/₁₂) = -1
6b + 3¹/₂ = -1
<u> - 3¹/₂ - 3¹/₂</u><u>
</u> <u>6b</u> = <u>-4¹/₂
</u> 6 6<u>
</u> b = ³/₄
4a + 9(³/₄) = 8
4a + 6³/₄ = 8
<u> - 6³/₄ - 6³/₄
</u> <u>4a</u> = <u>1¹/₄</u>
4 4
a = ⁵/₁₆
(a, b, c) = (⁵/₁₆, ³/₄, ⁷/₁₂)
