Answer:
x=7
Step-by-step explanation:
A is not equivalent to 7:3
If the first term is 5/3 and the common difference is 1/3. Then the infinite sum of the geometric series will be 2.5.
<h3>What is a series?</h3>
The sum of sequence terms is a series. That is, it is a list of integers connected by addition operations.
The sequence is given in the form of a variable.

The first term will be

And the common ratio will be

Then the sum of the geometric series will be given as

More about the series link is given below.
brainly.com/question/10813422
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Let x tickets sold be adults, then (1024-x) were of childrens tickets, 9x+(1024-x)4 = 7680. The above equation is for total money solve it you will get x=720 hence, number of adult tickets were 720 and number of child tickets were 300 :)
X² + 20 = 4
x² = 4 - 20
x² = -24 ⇒ no real number solutions