perimeter means to add up all the number around a surface so you are correct the answer is 12 because you are suppose to add up everything around the object so 7+5 which gives you 12
<h3>
Answer:</h3>
Explanation:
Given expression: (ab)x^2 + (b^2 - ac)x + (-bc) = 0
Here given:
Apply quadratic formula:
Insert values:
Answer:
$7.6825
Step-by-step explanation:
65%=0.65
0.65*21.95=14.2675
21.95-14.2675=7.6825