Answer:
A
Step-by-step explanation:
11/15
Just did the test. It is not "Never". It is ALWAYS!!! If an equation has no solutions (like one with the same slope) THERE WILL BE NO SOLUTIONS!!!!!
Expressions are mathematical statements represented with the variables
The value of 12x^-3 y-1 for x=-1 and y=5 is - 12/5
<h3>How to determine the value of the variable</h3>
The expression is given as:

When x = -1, the expression becomes

Evaluate the exponent

When y = 5, the expression becomes

Evaluate the exponent
- 12/5
Hence, the value of 12x^-3 y-1 for x=-1 and y=5 is - 12/5
Read more about expressions at:
brainly.com/question/723406
Answer:
31 scientific calculators
54 graphing calculators
Step-by-step explanation:
X = number of $15 calculators
Y = number of $67 calculators
X+Y = 85 then X = 85-Y
15X+67Y = 4083
substitute for X
15(85-Y)+67Y = 4083
1275 - 15Y + 67Y = 4083
reduce
52Y = 2808
Y = 54
X = 31
Answer:
f(3) = -16
Step-by-step explanation:
f(1) = -16
f(n) = f(n-1)
f(2) = f(2-1) = f(1) = -16
f(3) = f(3-1) = f(2) = -16