Answer:
s = 3
Step-by-step explanation:
First compute the cost of the three apps:
21-12=9
The cost of the three apps is $9 then.
Since s is the price of the apps, we deduce the equation:
3s=9
/3
s = 3
Answer:
3.5y
Step-by-step explanation:
Answer:
1648.37
Step-by-step explanation:
1634*0.97*1.04
The result you get when you divide is 11 + 16/x + 1
Use the Pythagorean Theorem of a² + b² = c² to solve for x.
x² + (x + 3)² = (√117)²
x² + x² + 6x + 9 = 117
2x² + 6x + 9 = 117
2x² + 6x + 9 - 117 = 0
2x² + 6x - 108 = 0
2x² + 18x - 12x - 108 = 0
2x(x + 9) - 12(x + 9) = 0
(2x - 12)(x + 9) = 0
x = - 9, 6
Length cannot be negative so you can't use - 9.
x = 6. Option C is your answer.