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Leviafan [203]
3 years ago
8

Please help me with number 7 I WILL GIVE BRAINLEST TO WHOEVER EXPLAINS AND SHOWS THE WORK

Mathematics
1 answer:
Aneli [31]3 years ago
6 0
Since you're looking for students who scored at least 81, then you're looking at the last two rows on the table, because 81-90 and 91-100 are all at least 81. Add those number of students together, 20 + 7 = 27

Now, add up all the students in the table, which should equal 50. Since 27 out of 50 students made at least an 81, divide the numbers.

\frac{27}{50} = 0.54

Move the decimal to the right two times, and your answer will be 54%
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Hi! Please help me, will mark brainliest!
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Answer:

p(t) = 0 for t = 1

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Step-by-step explanation:

the graph you will have to do yourself.

just go there and type in

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well, don't type "log" in letters.

you start by typing the "-" sign, and then you need to look up the functions by clicking on the "funcs" button and look for the log functions .

pick the

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and then you see.

any logarithm is 0 for x (or t) = 1.

because any a⁰ = 1.

and the logarithm gives you that exponent of the base number that leads to the given x value.

in other words : a logarithm is the inverse function of an exponential function.

the exponential function is

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x =  log_{a}(y)

that is all.

and

-  log_{8}(x)  = 1

means that the logarithm itself delivered -1.

and 8^-1 = 1/8

so, p(t) = 1 for t = 1/8

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