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aalyn [17]
3 years ago
5

Help need for test. What is the answer. There is an error in option c. It’s supposed to say line EF not line FF. Will give first

answer brainliest.

Mathematics
1 answer:
frez [133]3 years ago
7 0
The answer is C I believe
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In 2009 the life expectancy is about 80 life expectancy gains 5.7 years every decade. From 2009 in how many years would humanity
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  about 70 years

Step-by-step explanation:

Life expectancy (e) improves by 5.7 years every 10 years, so 5.7/10 = 0.57 years per year. For t years after 2009, it can be modeled by ...

  e = 0.57t +80

We want to find when that is 120:

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  40/0.57 = t ≈ 70.2

About 70 years from 2009, humanity may achieve a life expectancy of 120 years.

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If 42z = 5000, then which of the following must be true? F 2 < z < 3 G 3 < z < 4 H 4 < z < 5 J 5 < z < 6
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5 0
3 years ago
What is the answer? i dont get it
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3 years ago
Write a division problem that will have a 2 digit quotient and another division problem that will have a 3 digit quotient. Expla
o-na [289]

Answer:

\frac{240}{4} =60

\frac{1800}{3} =600

Step-by-step explanation:

1.  The result should by a 2 digit number.

So, I fix a two digit number first, say 60.

Then, I multiplied it by some random integer, say 4 and got 240.

Now, 240 is my dividend and 4 is my divisor.

My division problem is:

\frac{240}{4} =60


2.  The result should be a 3 digit number.

So, I fix a three digit number first, say 600.

Then, I multiplied it by some random integer, say 3 and got 1800.

Now, 1800 is my dividend and 3 is my divisor.

My division problem is:

\frac{1800}{3} =600

6 0
3 years ago
Read 2 more answers
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