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pashok25 [27]
3 years ago
9

An unprepared student makes random guesses on all questions of her multiple choice test. If there are 15 questions and each ques

tion has 5 possible​ answers, what is the probability she will answer at least one question​ correctly? Round to three decimal places.

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0

answer : 0.965 (3 s.f)

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The higher interest rate of a cash advance on a credit card with an existing balance can be eliminated by paying the
Alex787 [66]
B

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What is 9.66 rounded to the nearest tenth
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the number is 6 so we round up to 9.7 s


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3 years ago
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The population of Henderson City was 3,381,000 in 1994, and is growing at an annual rate 1.8%
liq [111]
<h2>In the year 2000, population will be 3,762,979 approximately. Population will double by the year 2033.</h2>

Step-by-step explanation:

   Given that the population grows every year at the same rate( 1.8% ), we can model the population similar to a compound Interest problem.

   From 1994, every subsequent year the new population is obtained by multiplying the previous years' population by \frac{100+1.8}{100} = \frac{101.8}{100}.

   So, the population in the year t can be given by P(t)=3,381,000\textrm{x}(\frac{101.8}{100})^{(t-1994)}

   Population in the year 2000 = 3,381,000\textrm{x}(\frac{101.8}{100})^{6}=3,762,979.38

Population in year 2000 = 3,762,979

   Let us assume population doubles by year y.

2\textrm{x}(3,381,000)=(3,381,000)\textrm{x}(\frac{101.8}{100})^{(y-1994)}

log_{10}2=(y-1994)log_{10}(\frac{101.8}{100})

y-1994=\frac{log_{10}2}{log_{10}1.018}=38.8537

y≈2033

∴ By 2033, the population doubles.

4 0
3 years ago
What is the slope of the line ? Please answer quick .
lilavasa [31]

Answer:

slope:   3

equation of the line:  y=3x+4

Step-by-step explanation:

i hope this helps :)

4 0
2 years ago
About 7/10 of the surface of the earth is covered with water. Express this as an equivalent fraction with 100 as the denominator
larisa [96]

Answer:

70/100

Step-by-step explanation:

Surface of the earth covered with water = 7/10

Equivalent fraction of 7/10 with 100 as the denominator = 70/100

This means 70% of the earth surface is covered with water

Percentage covered with land = Total percentage - percentage covered with water

= 100/100 - 70/100

= 100-70/100

= 30/100

Percentage covered with land = 30%

8 0
3 years ago
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