At-shirt shop charges $15 for an adult shirt and $12 for a youth shirt. the total charge for a shirt order was $489. which equation can be used to represent x, the number of adult shirts sold and y, the number of youth shirts sold? 12x + 15y = 489 27x + 15y = 489 15x + 12y = 489 15x + 3y = 489

 x, the number of adult shirts

 y, the number of youth shirts

$15 for an adult shirt and $12 for a youth shirt. The total charge for a shirt order was $489.

15x + 12y  = 489

Answer

15x + 12y = 489

The answer to this question is C : 15x + 12y = 489.

WHY?

It asks for the number of adult shirts (x represents how much was sold) and youth shirts (y represents how much was sold). $15 was for an adult shirt and $12 was for a youth shirt.

THAT'S WHY

15x + 12y = 489

^     +    ^  =   ^

adult + youth = total amount

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet