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Irina18 [472]
3 years ago
9

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer:

20 questions.

Step-by-step explanation:

Let  x  be the number of questions on the quiz.

85 %  means  85  out of  100  (or  85/ 100  )

85/ 100   = 3/x

--->100-85=15

--->15/3=5

--->100/5=20  

Meaning each question was worth 5% and there were 20 questions.

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2 years ago
If \$1000 is deposited into an account that earns 3.25\% simple interest per year, how much money will be in the account after 7
Andrei [34K]
<h3>Answer: 1227.50 dollars</h3>

======================================================

Explanation:

The simple interest formula to use is

A = P*(1+r*t)

where,

A = account value after t years (original deposit + interest)

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Step-by-step explanation:

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2 years ago
How does the graph of g(x) = (x + 4)3 − 6 compare to the parent function f(x) = x3?
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Answer:

g(x) is shifted 6 units to the left

Step-by-step explanation:

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Another approach to the solution is to plot the two functions together by obtaining the crossing points with the 'y' axis and with the 'x' axis

the result is shown in the attached picture

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