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ZanzabumX [31]
3 years ago
9

Find the slope of the line. A: -2/3 B: 2/3 C: 3:2 D: -3/2

Mathematics
1 answer:
tia_tia [17]3 years ago
3 0

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (look at the picture) (0, 1) and (-2, -2). Substitute:

m=\dfrac{-2-1}{-2-0}=\dfrac{-3}{-2}=\boxed{\dfrac{3}{2}}\to\boxed{D}

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Answer:

Mean track length for this rock specimen is between 10.463 and 13.537

Step-by-step explanation:

99% confidence interval for the mean track length for rock specimen can be calculated using the formula:

M±\frac{t*s}{\sqrt{N}} where

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  • t is the two tailed t-score in 99% confidence interval (2.977)
  • s is the standard deviation of track lengths in the report (2 μm)
  • N is the total number of tracks (15)

putting these numbers in the formula, we get confidence interval in 99% confidence as:

12±\frac{2.977*2}{\sqrt{15}} =12±1.537

Therefore, mean track length for this rock specimen is between 10.463 and 13.537

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Answer:

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2 years ago
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Morgarella [4.7K]

Answer:

Option D is the correct answer

Step-by-step explanation:

D. Yes, because it passes the vertical line test.

7 0
2 years ago
The radius of the cone is 5 in and y = 13 in. What is the volume of the cone in terms of π?
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Answer:

The volume of the cone is;

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Step-by-step explanation:

To calculate the volume, we need the height

We can get the height from the slant height and the radius

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h^2 = 169-25

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h = √1144 inches = 12 inches

The volume of the cone is;

1/3 * π * r^2 * h

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2 years ago
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3 years ago
Read 2 more answers
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