Answer:
5. A.
6. F
Step-by-step explanation:
5. Perpendicular lines have slopes that are negative reciprocals of one another, so slope is 3
y = 3x + b
using coordinates (-6,3)
3 = 3(-6) + b
b = 21
y = 3x + 21
6. I think F is the right answer
Answer:
23
Step-by-step explanation:
19=x-4
x=23
Answer:
35cm
Step-by-step explanation:
3a³ + 2b³ = ?
Substitute for values:
3a³ + 2b³
a = 3
3 × 3³ + 2b³
b = 2
3a³ + 2 × 2³
Full question:
3 × 3³ + 2 × 2³
<span>3 × 3³ + 2 × 2³
</span>3 × 27 + 2 × 2³
3 × 27 + 2 × 8
81 + 16
97
The value of the expression 3a³ + 2b³ when a = 3 and b = 2 is 97.
<span>3 × 3³ + 2 × 2³ = 97</span>
