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Fittoniya [83]
3 years ago
15

Please help this is in my test tomorrow♡

Mathematics
1 answer:
MAVERICK [17]3 years ago
5 0

Answer:

<u><em>67</em></u>

Step-by-step explanation:

<u><em>50-40+87-30</em></u>

=50+(- 40)+87(-30)

=50+87+(-40)+(-30)

=(50+87+(-40)+(-30)

=137+(-70)

=67

<u><em></em></u>

<u><em></em></u>

<u><em></em></u>

<u><em>when he wins, we add points. When he loses ,we subtract points.The score is 50 points. We right  an expression to find the final score </em></u>

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Professor Liu gave the same quiz to the students in her morning class and in her afternoon class. The average (arithmetic mean)
natka813 [3]

Answer:

Afternoon class has more students.

Step-by-step explanation:

Let m be the number of students in the morning class and n be the number of students in the afternoon class.

The average score for the students in the morning class was 80, then the sum of their scores is 80m.

The average score for the students in the afternoon class was 86, then the sum of their scores is 86n.

The sum of the scores of both classes is

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The average (arithmetic mean) score for the two classes combined was 84, then

\dfrac{80m+86n}{m+n}=84\\ \\ 80m+86n=84m+84n\\ \\86n-84n=84m-80m\\ \\2n=4m\\ \\n=2m

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7 0
3 years ago
f(X) = 9x^3 + 2x^2 - 5x^3 - 7x + 4 and g(X) = 5x^3 - 7x + 4. what is f(X) - g(X)? Show all of your steps and write your final an
dolphi86 [110]
First we can simplify f(x) to make it a little easier. We can write it as
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The we just subtract g(x) from f(x) and simplify
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Hope this helps
5 0
3 years ago
Read 2 more answers
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eduard

Answer: 1

Step-by-step explanation:

5+13/18

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1

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Answer:

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Answer: Hope this helps!

Left to right - Q1 - Q5

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