Answer:
Option C
Step-by-step explanation:

Lets convert it into improper fraction.

Lets convert
into a mixed fraction.

Rounding off 7.04 gives 7 and rounding 7 further gives 10.
So , the estimate of the product is 10
Answer:
I think z = 89 and I don’t know x
The common difference is 12
Further explanation:
It is given that the infinite sequence is an arithmetic sequence
The common difference is the difference between consecutive terms of an arithmetic sequence.
Here,

The common difference is denoted by d.
Here,

The common difference is same for all proceeding terms.
So,
d = 12
Keywords: Infinite arithmetic sequence, Common difference
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9514 1404 393
Answer:
Step-by-step explanation:
a) You go about this by using the given equation.
Left + Right = Total
JK + KL = JL
(2x -3) + 11 = 4x
8 = 2x . . . . . simplify, subtract 2x
4 = x . . . . . . divide by 2
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b) JL = 4x = 4·4
JL = 16