−15.82x + 20.042
calculated it
Answer:
x=4
Step-by-step explanation:
Combine like terms
Subtract 4 from both sides of the equation
Simplify
Subtract 5
from both sides of the equation
Simplify
Divide both sides of the equation by the same term
Simplify
To find the total cost of Mikayla's purchase, we add together the costs of the skirts and tops. The costs of the skirts can be found be multiplying the quantity bought by the cost per skirt. Same goes for the tops.
5x + 3(9)
Simplified:
5x + 27
Subtract 13 from both sides:


Divide both sides by -5. Since this is a negative number, you have to invert the inequality sign:

Which means
(4 sqrt. 3) /4
Sqrt. 3 is the tangent of a because opposite over adjacent.