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kakasveta [241]
1 year ago
14

21.4.2 Quiz: Introduction to Proofs

Mathematics
1 answer:
attashe74 [19]1 year ago
4 0

Answer:

B. A conclusion proved by deductive reasoning

Step-by-step explanation:

Other brainly users also said the same thing

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What is 100,572×135,689
shepuryov [24]

Answer:

13646514108

Step-by-step explanation:

Used calculator.

5 0
3 years ago
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In ΔLMN, \overline{LN}
Karolina [17]

Answer:

\bold{\angle NLM = 10^\circ}

Step-by-step explanation:

Given a ΔLMN.

Line LN is extended to point O.

such that:

\text{m}\angle MNO = (5x-13)^{\circ}

\text{m}\angle NLM = (x-4)^{\circ} and

\text{m}\angle LMN = (2x+19)^{\circ}

To find:

\text{m}\angle NLM=?

Solution:

Kindly refer to the attached image for the given triangle and dimensions of angles.

Let us recall the external angle property of a triangle:

The external angle of a triangle is equal to the sum of two opposite internal angles.

i.e.

\angle MNO = \angle NLM + \angle LMN\\\Rightarrow 5x-13 = x-4+2x+19\\\Rightarrow 5x-13 = 3x+15\\\Rightarrow 5x-3x = 13+15\\\Rightarrow 2x=28\\\Rightarrow x =14

Putting the value of x in \angle NLM.

\angle NLM=14-4 \\\Rightarrow \bold{\angle NLM = 10^\circ}

5 0
3 years ago
A car drives at 45 km/h for 3 hours.<br> How far does the car travel?
stellarik [79]

Answer:

Hey!

The car travelled 135 kilometers!

Step-by-step explanation:

Here you have to do the speed (45km/h) multiplied by the time (3 hours)

45 x 3 = 135

So the car has travelled 135 kilometers!

HOPE THIS HELPS!!

8 0
3 years ago
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Which expression below is equivalent to the expression -3/4(-12x-20Y)
Brut [27]
The answer would be a
6 0
3 years ago
The terminal arm of an angle drawn in standard position rotates in a positive direction through two quadrants of the coordinate
Aneli [31]
There are 4 quadrants and each quadrant is has a measure of 90° angle.

Because the direction is positive, it means that the arm is going from 1st quadrant to 2nd quadrant.

90° + 90° = 180°

Because there is an additional rotation of 25°, the arm is now in the 3rd quadrant. 

180° + 25° = 205°

The measure of the angle is 205°
3 0
3 years ago
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