2 years ago

Please help will mark brainliest

Mathematics

1 answer:

svet-max [94.6K]2 years ago

5 0

Answer:

The answer is 36.9

Step-by-step explanation:

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What is the slope of the line with point (3,-5) and (-7,10)?

pentagon [3]

Answer:

-3/2

Step-by-step explanation:

10 -(-5)/-7-3

15/-10

-3/2

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2 years ago

How many miles could Misty travel on a full tank of 12 gallons of gas?

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Answer:

Step-by-step explanation:

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3 years ago

If a 12-student class averaged 90 on a test, and a 20-student class averaged 80 on the test, then all 32 students averaged

Alexxx [7]

Let the marks of the students in class 1 be

$m_1, m_2, ....., m_1_2$

the average of these 12 marks is 90, so

$\frac{m_1+ m_2+ .....+ m_1_2}{12}=90$

which means

$m_1+ m_2+ .....+ m_1_2=90*12=1080$

similarly, let $n_1, n_2, ....., n_2_0$ be the marks of the students in the second class,

so $\frac{n_1+ n_2+ ..... n_2_0}{20}=80$

which means $n_1+ n_2+ ..... n_2_0=80*20=1600$

The 32 students averaged:

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3 years ago

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