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2 years ago

6

Barb tests the properties of three minerals and makes a data table to record her results, as shown below.

2 answers:

natima [27]2 years ago

6 0

Answer:

Streak and cleavage.

Explanation:

I had almost the same question so maybe this is right. Sorry if it's not.

shtirl [24]2 years ago

4 0

Answer:

Geologists use the following tests to distinguish minerals and the rocks they make: hardness, color, streak, luster, cleavage and chemical reaction. A scratch test developed by a German mineralogist Friedrich Mohs in 1822 is used to determine mineral hardness.

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Which is not driven by energy from the sun? ocean circulation volcanic eruption erosion climate

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For each of the six basic tactics, select the set of action steps (a to f) that describe the tactic.

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The set of actions that represent the tactics include repositioning a product, marketing a product, etc.

<h3>Actions describing the tactics.</h3>

<u>Repositioning a product.</u>

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<u>Marketing a product.</u>

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2 years ago

Lydia graphed δlmn at the coordinates l (0, 0), m (2, 2), and n (2, −1). She thinks δlmn is a right triangle. Is lydia's asserti

nadya68 [22]

No product results in -1, hence δlmn is NOT a right triangle showing that lydia's assertion is incorrect

<h3>Perpendicular lines</h3>

In order to determine whether triangle lmn is right-angled, we need to determine the slope of lm, ln, and mn first as shown:

For the slope of lm:

$m_{lm} = \frac{2-0}{2-0}\\ m_{lm} =2/2\\m_{lm} =1$

For the slope of ln:

$m_{ln} = \frac{-1-0}{2-0}\\m_{ln} =-1/2\\$

For the slope of mn:

$m_{mn} = \frac{-1-2}{2-2}\\m_{ln} =-3/0 = \infty\\$

If any of the two lines is perpendicular, hence the triangle lmn is right-angled.

To check, we will take the product of the slopes and see if it is equivalent to -1.

Product of slope lm and ln

$m_{lm}\times m_{ln} = 1 \times -1/2\\m_{lm}\times m_{ln} = -1/2$

Since no product results in -1, hence δlmn is NOT a right triangle showing that Lydia's assertion is incorrect

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