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3 years ago

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Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

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Given the arithmetic sequence an= 2 - 3(n - 1), what is the domain for n?

wel

Generally we use n as a counter and begin it with 1: the first term is obtained when n = 1. Thus, n must be a positive integer, 1 or greater: {1, 2, 3, ... }.

5 0

3 years ago

Read 2 more answers

Complementary events must have a sum of 1.

Bas_tet [7]

This is a true statement.

Consider two events A and B. We say they are complementary if P(A)+P(B) = 1

This means that either event A or event B must happen, since the "1" represents 100% probability. Having a probability of 100% means absolute certainty.

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Example:

A = the event it rains

B = the event it does not rain

P(A) = 0.30 = 30% chance of rain

P(B) = 0.70 = 70% chance it does not rain

P(A)+P(B) = 0.30+0.70 = 1

So this shows the two events are complementary.

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3 years ago

Which algebraic expression represents the phrase below? five times the sum of a number and eleven, divided by three times the su

anyanavicka [17]

The overall algebraic expression will be: $\frac{5(x+11)}{3(x+8)}$

Definition of algebraic expression -

An expression obtained by a finite number of the fundamental operations of algebra upon symbols representing numbers.

Five times the sum of a number and eleven, divided by three times the sum of the number and eight.

Let the number be x.

Five times the sum of a number and eleven means 5 multiplied to the sum of x and 11. In expression this will be written as:

5(x + 11)

Three times the sum of the number and eight means 3 multiplied to the sum of x and 8. In expression this will be written as:

3(x + 8)

So, the overall algebraic expression will be: $\frac{5(x+11)}{3(x+8)}$

Learn more about algebraic expression

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3 0

1 year ago

Rectangular prism has a volume of 500 in.³ and the area of the base is 25 in.² what is the height of the rectangular prism

Evgesh-ka [11]

Answer:

20 in

Step-by-step explanation:

Vol. = Bh where B is the area of the base and h is the height of the prism

500 = 25h

h = 20 in

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2 years ago

Which congruence statement says the same thing as ABC=DEF

Oliga [24]

Answer is c.) ACB=DFE

hope that helps

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2 years ago