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4 years ago

5

Why are undefined terms in geometry called undefined?

2 answers:

deff fn [24]4 years ago

8 0

Answer:

The reason why it is called undefined is because it literally cannot be defined by current mathmaticians.

Step-by-step explanation:

Softa [21]4 years ago

4 0

Answer: The undefined terms in geometry called undefined because using the three undefined terms (point, line and plane) we can define other terms in geometry.

Step-by-step explanation:

In geometry, we have three undefined terms: point, line and plane.

An expression in mathematics is said to be undefined if it does not have any meaning but it is used to define other mathematical terms.

Similarly the undefined terms in geometry are words that don't require any formal definition. They create the building blocks for either properly defining or proving theorems and other terms.

Generally we can say that by using the three undefined terms (point, line and plane) we can define other terms in geometry.

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Mark purchased a 20 foot long sub for a party he cuts the sandwich into 5/12 foot sections into how many pieces does he cut the

vazorg [7]

Answer:

48 pieces

Step-by-step explanation:

20÷5/12=20*12/5=240/5=48

5 0

3 years ago

A student is given that point P(a, b) lies on the terminal ray of angle Theta, which is between StartFraction 3 pi Over 2 EndFra

Harman [31]

Answer:

<em>A.</em>

<em>The student made an error in step 3 because a is positive in Quadrant IV; therefore, </em>

<em /> $cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}$

Step-by-step explanation:

Given

$P\ (a,b)$

$r = \± \sqrt{(a)^2 + (b)^2}$

$cos\theta = \frac{-a}{\sqrt{a^2 + b^2}} = -\frac{\sqrt{a^2 + b^2}}{a^2 + b^2}$

Required

Where and which error did the student make

Given that the angle is in the 4th quadrant;

The value of r is positive, a is positive but b is negative;

Hence;

$r = \sqrt{(a)^2 + (b)^2}$

Since a belongs to the x axis and b belongs to the y axis;

$cos\theta$ is calculated as thus

$cos\theta = \frac{a}{r}$

Substitute $r = \sqrt{(a)^2 + (b)^2}$

$cos\theta = \frac{a}{\sqrt{(a)^2 + (b)^2}}$

$cos\theta = \frac{a}{\sqrt{a^2 + b^2}}$

Rationalize the denominator

$cos\theta = \frac{a}{\sqrt{a^2 + b^2}} * \frac{\sqrt{a^2 + b^2}}{\sqrt{a^2 + b^2}}$

$cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}$

So, from the list of given options;

<em>The student's mistake is that a is positive in quadrant iv and his error is in step 3</em>

3 0

3 years ago

Solve the inequality:<br><br> 444 + 555y < 333

zhannawk [14.2K]

The solution is y < -1/5

In order to find the answer to this problem, follow the order of operations for solving equations/inequalities.

444 + 555y < 333 -----> Subtract 444 from both sides

555y < -111 -----> Divide both sides by 555

y < -1/5

5 0

3 years ago

Which algebraic equation models the English sentence, a number subtracted from 8 is equal to 4?

kykrilka [37]

let's x represent a number

8-x = 4

3 0

3 years ago

Read 2 more answers

If if four points are collinear, that are also coplanar: true or false??

Aliun [14]

if four points are collinear, that are also coplanar: This is true

If points lie in the same line. they must lie in the same plane

7 0

4 years ago