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3 years ago

Miedzy nami klasa 5 zad 1 str 249.

SAT

1 answer:

Ivanshal [37]3 years ago

5 0

Answer:

this is hard idk

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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

Learn more on slopes here: brainly.com/question/3493733

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Which statements apply to a certificate of deposit (cd)? choose two answers. It is always purchased as a short-term investment.

Novosadov [1.4K]

The two statements that refer to the certificate of deposits are:

It can be purchased from a banking institution.

It can be purchased for almost any amount.

<h3>What is a certificate of deposit?</h3>

This is also referred to as time deposit. The deposit is a certificate that is issued to a person that is keeping money in a bank for a particular time period at a given rate of interest.

This certificate is gotten for almost any amount of money from the banks that are issuing them.

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