There were 450 students enrolled in a middle school at the beginning of the school year. The number of students enrolled in the school at the end of the year was 10 percent less than the number of students enrolled in the school at the beginning of the year. How many students were enrolled in the school at the end of the year?

405

Step-by-step explanation:

10% of 450 is 45 and 450-45=405 students

405 maybe?

Step-by-step explanation:

10% of 450 is 45 and subtract that from 450?

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,