Answer:x=-8
Step-by-step explanation:subtract 21 from both sides then simplify 31-21 to -8
Answer:
the water is 2.2 meters deep
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
We want to find the distance between (-6, 4) and (-8, 6).
We can use the distance formula given by:

Let (-6, 4) be (x₁, y₁) and let (-8, 6) be (x₂, y₂).
Substitute:

Evaluate:

Evaluate:

Hence, our answer is D.
Answer:
B. eight fewer than a number
Answer:
lines a and b
Step-by-step explanation:
A negative slope makes the line face leftward so that leaves a and b.