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Mars2501 [29]
3 years ago
11

A tree has 99,400 leaves before autumn. Once autumn begins, the number of leaves on a tree decreases at a rate of 13% per day. A

fter t days of autumn, there are fewer than 12,000 leaves on the tree.
Which inequality represents this situation, and after how many days of autumn will the number of leaves on the tree be fewer than 12,000?
A.
12,000(1.087)t > 99,400; 18 days
B.
12,000(0.913)t < 99,400; 17 days
C.
99,400(0.87)t < 12,000; 16 days
D.
99,400(1.13)t > 12,000; 15 days
Mathematics
1 answer:
sp2606 [1]3 years ago
6 0
D, is the correct answer
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sergiy2304 [10]

Answer:

x=1, y=7

Step-by-step explanation:

y = -3x + 10 - first equation

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rearrange the expression to

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pick an equation and simplify; lets pick the second equation

3x-y= -4

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divide 3 by both sides

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substitute the value of x into an equation; lets pick the first equation

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-3(\frac{-4+y}{3})- y = -10

simplify. -3 cancels 3 so we are left with

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subtract 4 from both sides

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divide -2 by both sides

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so the answer is x=1, y=7

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3 years ago
Suppose 15% of the apples picked one afternoon are rotten.
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Crazy boy [7]

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Answer:

option C: 120

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3 years ago
Need help please and thank you
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