Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
Step-by-step explanation:
Answer:
i think the answer is, A...
Answer:
below only shows up once
Step-by-step explanation:
mark: tally: frequency:
61 I I
67 I I
81 I I
83 I I
87 I I
88 I I
89 I I
90 I I
98 I I
100 I I
What do you not understand?
Answer:
The answer is a = 4.5
Step-by-step explanation:
To find this we start by dividing away the coefficient of a.
10a = 45 ----> Divide both by 10
a = 4.5
