Answer:
9,103.69
Step-by-step explanation:
y = A(d)^x
y = 12000(1-0.129)^2
Decay y = 12000(0.871)^2
solve for y = $ 9,103.69
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Total area = 12 + 18 = 30cm²
Answer:
100
Step-by-step explanation:
103.37 and after rounding off to nearest tenth it becomes 100
If Karen takes 2.5 hours to paint the whole wall, then in an hour she paints a fraction of 2/5.
On the other hand, if Stephanie takes 1.25 hours then in an hour she paints a fraction of 4/5 of the wall.
When the two are working together then one hour they will paint a fraction of 6/5 of the wall. But the wall is one whole therefore it will take 5/6 hours or 50 minutes for them to paint the whole wall together. The answer is 50 minutes