6n-15=n
minus n both sides
5n-15=0
add 15 both sides
5n=15
divide both sides by 5
n=3
de number is 3
Answer: $29.43
Step-by-step explanation: 3 shirts for $9 each adds up to $27. 9%= 0.09 so you can multiply the cost of the shirts by 1.09 because that is the base price plus the sales tax. Then you get $29.43.
You can always find the area from breaking it up into smaller shapes. For example, a hexagon is basically 2 trapezoids.
Some formulas for different shapes.
Trapezoid: <span>height × (base1 + base2) / 2
Rectangle: length x width
Parallelogram: height x base
Triangle height x base / 2</span>
Answer:
x = 17.2
Step-by-step explanation:
since they are supplementary, when you add then together they equal 180
4x + 8 + 6x = 180
Combine like terms
10x + 8 = 180
subtract 8 from both sides
10x = 172
divide each side by 10
x = 17.2
hope this helps :)
