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Which of the following is considered one of the undefined terms of geometry?rayanglelinecircumference


The last one that's what I learned

Related Questions

Posted in Mathematics

Which terms could be used as the first term of the expression below to create a polynomial written in standard form? Check all that apply. + 8r2s4 – 3r3s3 s5 3r4s5 –r4s6 –6rs5

Answer:

Option 2,3 and 4 are correct.

Step-by-step explanation:

To find : Which terms could be used as the first term of the expression below to create a polynomial written in standard form? Check all that apply.

?+8r^2s^4-3r^3s^3

Solution :

The polynomials in standard form is written from higher degree to lower degree i.e. in descending order.

The given polynomial has degree 6: ?+8r^2s^4-3r^3s^3, and it can be ordered respect any of the two variables either r or s.

Adding a new term as first term needs to have degree equal or greater than 6.

1) s^5 cannot use as first term because its degree is less than 6.

2) 3r^4s^5 it can be use as degree is 9.

3r^4s^5+8r^2s^4-3r^3s^3 is the standard form.

3) -r^4s^6 it can be use as degree is 10.

-r^4s^6+8r^2s^4-3r^3s^3 is the standard form.

4) -6rs^5 it can be use as degree is 6.

-6rs^5+8r^2s^4-3r^3s^3 is the standard form.

Therefore, Option 2,3 and 4 are correct.

Posted in Mathematics

Which CANNOT be used in a proof? A. Theorems B.Postulates C.Properties D.Undefined Terms

The best and most correct answer among the choices provided by the first question is the fourth choice or letter D.

Undefined terms cannot be used as a proof in mathematics.


I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in Mathematics

Algebraic terms are separated by ______. Choose all that apply. 1)= 2)+ 3)x 4)÷ 5)-

Answer

1)=

2)+

5)-

Explanation

When letter or numbers are separated by multiplication or division can be combined to make one term.

In an algebra equation, terms are separated by an addition sign, subtraction sign or an equal sign. For example,

3a + 7b = 21.

This equation have 3 terms.

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What is the next 3 terms in the following sequence, 5.5,6.7,7.9,9.1

10.3, 11.5, 12.7, u keep adding 1.2 every time so u can get the answer, can u make this the brainliest???

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Combine like terms to simplify the expression: 1.3b+7.8−3.2b

That'd be
1.3b -3.2b +7.8
-1.9b + 7.8
that's the simplification
don't forget to make my answer the brainliest if it's correct

Posted in Mathematics

20(−1.5r+0.75) expand the expression and combine like terms

Answer:

-30r + 15

Step-by-step explanation:

We have been given that

20(−1.5r+0.75)

Use the distributive property a(b+c)=ab+ac.

20×(−1.5r)+20×0.75

Multiplying, we get

-30r +15

These two are not like terms. Hence , we cannot combine them.

Therefore, we cannot simplify it more.

Hence, the simplified expression is -30r + 15

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For every problem-solving activity it's crucial that no less than five alternatives be considered. True False

Problem-solving activity includes

1.Understanding the problem,that is nature of the problem, then Completely define in your own way.

2. Determining why this problem has accrued,

3.  Identifying the ways to solve the problem,

4. Prioritizing the given alternatives that is ways  and then arranging the alternatives for a solution,

5. Then applying the best solution or arrangement for the given problem.

There are two ways considered for  problem-solving activity

(1). Trial and Error  (2) Reduction in steps

It totally depends on the kind of problem , which you are solving. There may be Less than  five alternatives  ,equal to  five alternatives or more than  five alternatives to solve the problem.

Option B: False

Posted in Mathematics

Match the definition with the terms. 1. a portion of a large group 2. choosing a sample so that every member has an equal chance of being chosen 3. choosing a sample from people who are under 15 years old 4. using the responses of a small group to make conclusions about the large group. random sample sample biased sample estimating from a sample

1. a portion of a large group -> sample

the sample is the part that you select from a population to analyze.

2. choosing a sample so that every member has an equal chance of being chosen -> random sample


in a random sample any member of the group has the same probabilities to be selected.


3. choosing a sample from people who are under 15 years old -> biased sample

when you select based on a characteristic of the group you are running a biased sampling.

4. using the responses of a small group to make conclusions about the large group. -> estimating from a sample

statistics searches to infere information about a large group using the responses from a sample

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1. Which best describes the relationship between the successive terms in the sequence shown? 9, –1, –11, –21, … a)The common difference is –10. b)The common difference is 10. c)The common ratio is –9. d)The common ratio is 9. 2. A sequence is defined recursively using the formula f(n + 1) = f(n) – 5 . Which sequence could be generated using this formula? a)1, –5, 25, –125, ... b)2, 10, 50, 250, ... c)3, –2, –7, –12, ... d)4, 9, 14, 19, ...

Q1. The answer is a)The common difference is –10. 

Let's calculate the common difference (c):
c = f(n + 1) - f(n)

9, –1, –11, –21, …
-1 - 9 = -10
-11 - (-1) = -11 + 1 = -10
-21 - (-11) = -21 + 11 = -10


Q2. The answer is 
c)3, –2, –7, –12, ...

f(n + 1) = f(n) – 5
f(n + 1) - f(n) = -5

c = f(n + 1) - f(n)

So, the common difference is: c = -5

Let's check all choices:
a) c = -5 - (-1) = -5 + 1 = -4         INCORRECT
b) c = 10 - 2 = 8                        INCORRECT
c) c = -2 - (-3) = -5
    c = -7 - (-2) = -5
    c = -12 - (-7) = -5                    CORRECT
d) c = 9 - 4 = 5                          INCORRECT

Posted in Mathematics

Find the sum of the first 50 terms of the sequence below. An = 3n + 2

An+1= 3n+3 +2
An+1 - An = 3n+5 -3n-2=3
An is aa arithmetic sequence
its sum is given by:
A0 +A1 +A2 + . . . + An = N(Ao + An) /2
where N = n-0=n
S50= A0 +A1 +A2 + . . . + A50 = 50(Ao + A50) /2

S50 = 50(Ao + A50) /2
Ao=2, A50=150+2=152
S50= 50(Ao + A50) /2

finally
S50=25*154=3850

Posted in Mathematics

A field test for a new exam was given to randomly selected seniors. The exams were graded, and the sample mean and sample standard deviation were calculated. Based on the results, the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%. Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate the confidence interval and explain what it means in terms of the situation.

This may help you

ince the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%, that means there is a 90% confidence interval. 9 / 10 = .90 = 90% 90% = 1.645 1.645 * .9 = 1.4805 Margin of Error - 1.4805
and The margin of error is the distance from x-bar, the center of the confidence interval ,to the end of the interval. This distance is 6% of 80% which is given by: 80×6100=4.8 Therefore the margin of error is 4.8% and the confidence interval is: ({80 - 4.8}%, {80 + 4.8}%)


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Solve in terms of x and Y

To solve for y in terms of x, the y variable must be alone on the left side of the equation. In the sample problem, subtract 8 from each side. The equation then becomes 4y = 1 - 5x.

Posted in Mathematics

That gives the equation Ax=C which is a vertical line, so the slope is undefined.For the equation Ax + By = C (where A, B, C are real numbers) what is the slope (in terms of the traditional y = mx+ b) and state any restrictions. Help!!!

Ax+By = C can be solved for y to get

y = (-A/B)x + C/B

where 
-A/B is the slope
C/B is the y intercept

The only restriction is that B cannot be 0. This is to avoid a division by zero error. If B is zero, then the slope is undefined and you get a vertical line like with Ax = C

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Match the definition with the terms. 1. a portion of a large group 2. choosing a sample so that every member has an equal chance of being chosen 3. choosing a sample from people who are under 15 years old 4. using the responses of a small group to make conclusions about the large group. random sample sample biased sample estimating from a sample

Random sample - choosing a sample so that every member has an equal chance of being chosen (this is the absolute definition of random sampling)

Sample - a portion of a large group is termed as a sample.

Biased sample -  choosing a sample from people who are under 15 years old (biased sampling states that all the members of a group are not included in survey)  

Estimating from a sample - using the responses of a small group to make conclusions about the large group.(estimation means roughly judging something based on some sample )

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Write an expression that has three terms,two different variables, and one constant

A line passes through (-c/a,0) and (0,-c/b) is written as ax+by+c=0 here x and y are two variables and c is a constant let a and b be fixed number in real number system

Posted in Mathematics

Combine like terms 3m-6+m^2-5m+1

3m-6+m^2-5m+1
-2m-6+m^2+1
-2m-5+m^2

Posted in Mathematics

Find an identity for cos(4t) in terms of cos(t) cos(4t)=

Use double angle formula for cosine:
cos (2a) = 2cos^2(a) - 1

Apply to cos(4t)
cos (2(2t)) = 2 cos^2 (2t) - 1  \\  cos (2t) = 2 cos^2 t - 1
Sub 2nd equation into 1st equation:
cos(4t) = 2 (2 cos^2 t -1)^2 - 1  \\ = 8 cos^4 t -8cos^2 t +1

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