Recall that

. So we can add twice the first equation to the second one to get

Since

, we have

so

If

, then

If

, then

So the solution set is
10.2 x 2 = 20.40
9.4 x 3 = 28.20
Total= 48.60
Tan(35)=x/12
.7=x/12
12*.7=x
x=8.4
Answer:
Step-by-step explanation:
The percentage change in the staff strength of the grocery store is 10.53%.
<h3>How to find the percentage change?</h3>
We are given;
Number of employees in store = 38 employees
Number of additional people hired = 4 employees
Thus, percentage change in their staff is;
4/38 * 100% = 10.53%
Thus, the percentage change in the staff strength of the grocery store is 10.53%.
Read more about Percentage change at; brainly.com/question/2085058
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