Pacey's computer is infected with a virus. The number of files the virus corrupts doubles every 8 minutes. The following express
2 answers:
Answer:
Step-by-step explanation:
Pacey's computer is infected with a virus. The number of files the virus corrupts doubles every 8 minutes.
That means at every 8 minutes interval sequence becomes 8, 8 × 2, 8 × 2 × 2,.....
So the sequence is a geometric sequence.
Explicit formula of geometric sequence is
When = xth term
= first term
x = number of term
and r = common ratio
Here = 8 and r =
= 2
So expression representing the number of files corrupted will be =
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Answer:
Four less than an unknown value E)
Quotient of a variable and four B)
Some number to the power of four A)
Four times an unknown value D)
Four more than some number C)
Step-by-step explanation:
Let's analyze each statement separately:
- Four less than an unknown value --> this means that we have to subtract 4 to an unknown value. Calling the unknown value, it means we have to write
- Quotient of a variable and four --> this means we have to divide a variable by 4. Calling the unknown variabl, it means we have to write
- Some number to the power of four --> this means that we have to write the power of a number, in the form , where m in this case is equal to 4. Calling
the unknown number, it means we have to write
- Four times an unknown value --> this means that we have to multiply an unknown value by 4. Calling our unknown values, we have to write
- Four more than some number --> this means we have to add 4 to an unknown number. Calling the unknown number, it means we have to write