Answer: 9840
Step-by-step explanation:
Idk
X > 5 or x < -3
Hope this helped! :)
Divide by 6

Square both sides

Simplify Left side using Trig identities: (Pythagorean, Double Angle)

Solve for x:
Answer:
21 k^9
Step-by-step explanation:
(3k^4) (7k^5)
Multiply the coefficients
3*7 = 21
Add the exponents
k^(4+5) = k^(9)
Put back together
21 k^9
First find the percent of the sales tax added with the tip amount, which is 20%
15% + 5% = 20%
and the percent amount to the original amount, so
20% + 100% = 120%
$18=120% of original amount (12/10 is the same thing as 120%), so
18/12*10=$15= price of meal before tax and tip!