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Alex73 [517]
3 years ago
11

Which property of polynomial addition says that the sum of two polynomials

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

The property of polynomial addition that says that the sum of two polynomial is always a polynomial is called closure property of addition or under addition.

Polynomials are closed under addition because when you add polynomials the letters and their exponents do no change, you just add the coefficients of the like terms (those with same letters raised to the same exponents), so the result will be other polynomial of the same kind, except for the terms that cancel (positive with negative) which does not change the fact that the result is still a polynomial.

In mathematics the closure property means that the result of an operation over a kind of "number" will result in a "number" of the same kind.

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Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. Thi
Dovator [93]

Complete question:

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby this mention is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect so the probability of a girl is 0.5. Assume that the group consists of 36 couples.

A) Find the mean and standard deviation for the number of girls in groups of 36 births.

B) Use the range rule of thumb to find the values separating results that are significantly low and significantly high.

C) Is the result of 33 girls significantly high? A result of 33 girls would suggest the method is effective or is not effective?

Answer:

a) mean = 18

Standard deviation =3

b) low range = 12

High range = 24

c) The result of 33 girls is significantly high. Yes, the method is effective.

Step-by-step explanation:

Given:

p = 0.5

n = 36

a) The mean is the product of n and p

Mean u = np

u = 36 * 0.5 = 18

The standard deviation is the square root of the product of n and p&q.

S.d ó = \sqrt{npq}

= \sqrt{np(1-p)}

= \sqrt{36(0.5)(1-0.5)} = \sqrt{9} = 3

b) To find the range rule of thumb:

• For low range

Low range = u - 2ó

= 18 - (2 * 3)

= 12

• High range

= u + 2ó

= 18 + (2*3)

= 24

c) The result is significantly high, because 33 is greater than 24 girls.

A result of 33 girls would prove the method as effective.

8 0
3 years ago
I need help on my homework pls
son4ous [18]

Answer:

y=x2

I got it solved! tell me if it helped

4 0
2 years ago
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Mrrafil [7]

Answer:

The answer is C

Step-by-step explanation:


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3 years ago
What is 100 digits of pi
ra1l [238]

Answer:

the first 100 digits of pi are 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

8 0
3 years ago
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Vicente has a prism-like water tank whose base area is 1.2 square meters. He bought 6 goldfish at the store, and the store owner
PSYCHO15rus [73]

Answer:

  • 1.25 m

Step-by-step explanation:

<u>Given</u>

  • Base = 1.2 m²
  • Height = h
  • Number of fish = 6
  • Density = 4 fish/m³

<u>Minimum volume required:</u>

  • 6/4 = 1.5 m³

<u>Lowest water height:</u>

  • V= bh
  • h = V/b
  • h = 1.5/1.2 = 1.25 m
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3 years ago
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