Answer:
and 
Step-by-step explanation:
Let
x -----> the number of polyphonic ringtones
y ----> the number of standard ringtones
we know that
-----> equation A
-----> equation B
Solve the system of equations by substitution
Substitute equation A in equation B and solve for y





Find the value of x
I'm pretty sure the answer to your question is -3/5 + 4/5. C.
Answer: None
Step-by-step explanation:
If A=4, say for example, our list becomes: 3/4, 4/5, 75%.
This in decimal form becomes: 0.75, 0.8, 0.75 which is clearly not in ascending order.
If A =5, the list becomes 3/5, 5/5, 75% which clearly is 0.6, 1, 0.75 which is also not in ascending order.
For any value of A greater than 5, the second term A/5 is greater than 1 thus being less than the third term 0.75.
Therefore there is no whole number A that makes the list true.
Answer:
^speed, distance, and time^
my answer lies in paper
hope undertand
Answer:x=5 or x=−5
Step-by-step explanation:Step 1: Take square root.
x=±√25
x=5 or x=−5