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Maksim231197 [3]
3 years ago
12

Problem 1.3

Mathematics
1 answer:
Bess [88]3 years ago
6 0

Answer:

Get a brain

Step-by-step explanation:

Be smart

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40% of students on a field trip love the museum. If there are 20 students on the field trip, how many love the museum??
MariettaO [177]
Since there are 20 students on the field trip. Then 20 is the 100% total. Thus, to find how many people love the museum, we can simply multiply the total number of people by the percentage of interest, namely 40%

20*0.4 = 8
So, 8 people love the museum.
5 0
3 years ago
Huda opened a bank account with $30.00 and deposited $25.00 every month. After several months, she had a total of $180 in her ac
krek1111 [17]
Answer: C.) 6 months
3 0
3 years ago
Read 2 more answers
Find the length of AB when A(-4,1) and B(3,-1). Round to the nearest tenth (one decimal place) if necessary.
ivanzaharov [21]

Answer:

7.3 units is the answer rounded

8 0
3 years ago
What are the next three numbers in this pattern? 1, 4, 9, 16, __, __, __
SpyIntel [72]

Answer:

1,4,9,16,25,36,49

Step-by-step explanation:

The sequence is basically square numbers

3 0
3 years ago
Cobalt-56 has a decay constant of 8.77 × 10-3 (which is equivalent to a half life of 79 days). How many days will it take for a
sweet-ann [11.9K]
As I read this one, is just a decay exponential equation... so

A = P(1 + r)ᵗ   where "t" is days passed. . hmm in this case is decay, so negative rate  A = P(1 - r)ᵗ, and the decimal amount would be 0.00877 for the rate

62% of P, the original value, is just 0.62P, now... if we hmm take P as just 1, it could be any amount, but 62% of 1,000,000 is just 62% of 1 times 1,000,000

so, for the sake of comparing it with a percentage, 1 will do

\bf 0.62P=P(1-0.00877)^t\implies P=1\implies 0.62=(1-0.00877)^t
\\\\\\
ln(0.62)=ln[(1-0.00877)^t]\implies ln(0.62)=t\cdot  ln(1-0.00877)
\\\\\\
\cfrac{ln(0.62)}{ln(0.99123)}=t
7 0
3 years ago
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