4x + 2y = 20
3x - y = 10
Multiplying second equation by 2.
6x - 2y = 20
Adding to the first,
10x = 40
x = 4
y = 3x - 10 = 3(4) - 10 = 2
Answer: (4, 2)
Check:
4(4) + 2(2) = 16+4 = 20, good
3(4) - 2 = 12 - 2 = 10, good
Answer: 9.22 meters long
Step-by-step explanation: I did the assignment
Answer:
29
Step-by-step explanation:
Answer:
$15.39
Step-by-step explanation:
The volume of the cylinder is given by ...
V = πr²h = 3.14·(3.5 in)²·(8 in) = 307.72 in³
Since each cubic inch costs $0.05, the total cost is ...
$0.05 · 307.72 ≈ $15.39
Answer:
the third option
Step-by-step explanation:
the union of two sets of numbers just has to show all the numbers that are in the two sets, meaning if both sets have the same number, it is only shown once in the union
