<span>A) 2x + 4y = 38
B) 10x + 3y = 105
Multiplying A) by -5
A) -10x -20y = -190 then adding it to B)
</span><span>B) 10x + 3y = 105
-17y = -85
y = 5
x = 9
</span>
A = pi * r^2.....r = radius and pi = 3.14
A = (3.14)(13^2)
A = 3.14(169)
A = 530.66
The answer is 3 and 3.16227766017
If you ate a third of the box and there ARE 16 left then you started with 48 originally
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To get the answer we need the formula or source.
The question in another way if 4cm=1.2km, what is the 10cm=--------
first, you have to use the crisscross.
4cm=1.2km
10cm= x it is variable
then, 4xx= 1.2kmx10cm
4x=12km
4x/4= 12/4
x=3km