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Serga [27]
4 years ago
11

Hours Spent Studying

Mathematics
2 answers:
slava [35]4 years ago
6 0

Answer:

Mean of samples in row 1:  

✔ 8

Mean of samples in row 2:  

✔ 5

Mean of samples in row 3:  

✔ 6

Mean of samples in row 4:  

✔ 4

Vika [28.1K]4 years ago
3 0

Answer:

the answer is

mean of samples in row 1: 8

Mean of samples in row 2:  5

Mean of samples in row 3:  6

Mean of samples in row 4:   4

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How can 7 1/5+(-8 3/5) be expressed as the sum of its integer and fractional parts
Nadya [2.5K]

Answer:

see the explanation

Step-by-step explanation:

we know that

A mixed number is the sum of a integer and a fractional part

we have

7\frac{1}{5}+(-8\frac{3}{5})

so

7\frac{1}{5}=7+\frac{1}{5}

-8\frac{3}{5}=-8-\frac{3}{5}

substitute

7+\frac{1}{5}+(-8-\frac{3}{5})

Group terms

(7-8)+(\frac{1}{5}-\frac{3}{5})

(-1)+(-\frac{2}{5})

-1\frac{2}{5}

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3 years ago
Help please I’m stuck lol
slamgirl [31]
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3 years ago
What is the slope of the line that contains the points (-1, 2) and (3, 3)?​
iren [92.7K]

Answer:

1/4

Step-by-step explanation:

Slope of a line can be found if given two points by using the formula \frac{y_2-y_1}{x_2-x_1} where (x_1,y_1) \text{ and } (x_2,y_2) are points on the line.

However, I like to line up the points vertically and subtract then put 2nd difference over 1st difference.

Like this:

(   3   ,   3   )

-(  -1   ,    2  )

---------------------

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So the slope is 1/4.

3 0
3 years ago
Read 2 more answers
Help with 35 to 40, don’t know if I am right
Sedaia [141]

Step-by-step explanation:

35. 1000 m / 1 km = 10³

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36. 100 cm / 1 m = 10²

Move the decimal point 2 places to the right.

37. 1 mm / 1000 μm = 10⁻³

Move the decimal point 3 places to the left.

38. 1 km / 1000 m × 1 m / 100 cm = 10⁻⁵

Move the decimal point 5 places to the left.

39. 1 Mm / 10⁶ m × 1 m / 10⁶ μm = 10⁻¹²

Move the decimal point 12 places to the left.

40. 100 cm / m × 1000 m / km = 10⁵

Move the decimal point 5 places to the right.

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4 years ago
A submarine is descending to examine the seafloor 2,100 feet below the surface. It takes the submarine 2 hours to make this desc
iVinArrow [24]

Answer:

The answer should be -1050 because -2100-0/2-0 would equal -1050.

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2 years ago
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