Answer:
more the letter x is often used in algebra to mean a value that is not yet known is is calld a variable or sometimes an unknown. in x+2=7,x is a variable but we can work out its value if we try
Answer:

Step-by-step explanation:
Given
The attached triangle
Required

This is calculated as:

So, we have:


Answer:
0
Step-by-step explanation:
Plug in the corresponding numbers to the corresponding variables. Note that:
y = 9
z = 0
Plug in 9 for y, 0 for z.
(2z)/y = (2(0)/(9) = (0)/9 = 0
0 is your answer.
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Answer:
Step-by-step explanation:
(25x-5) 12X- Ax15