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3 years ago

How do we add two irrational numbers?

1 answer:

5 0

Let x > 0 be irrational, then 1 − x is also irrational, and the sum of these twoirrationals is one, which is rational. The question is much harder if you ask under what circumstances adding two irrational numbers produces an irrational. It is near impossible if you then substitute transcendental for irrational! Hope it helps

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PLEASE HELP NOW!! Will grant brainliest

slava [35]

(f·g)(x) is x^5 - 5x^4 + 4x³ - x² + 5x - 4

Step-by-step explanation:

Step 1: Given, f(x) = x² - 5x + 4 and g(x) = x³ - 1 Find (f·g)(x)

(f·g)(x) = f(x)·g(x) = (x² - 5x + 4)(x³ - 1)

= x^5 - 5x^4 + 4x³ - x² + 5x - 4

= x^5 - 5x^4 + 4x³ - x² + 5x - 4

5 0

4 years ago

Sally gets a cup of coffee and a muffin every day for breakfast from one of the many coffee shops in her neighborhood. She picks

aniked [119]

Answer:

A. Mean of the amount Sally spends on breakfast daily = $ 3.90

Standard deviation of the amount Sally spends on breakfast daily = $ 0.34 (rounding to the next cent)

B. Mean of the amount Sally spends on breakfast weekly = $ 27.30

Standard deviation of the amount Sally spends on breakfast weekly = $ 0.89 (rounding to the next cent)

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Average price of a cup of coffee = $ 1.40

Standard deviation = $0.30

Average price of a muffin = $ 2.50

Standard deviation = $ 0.15

The two prices are independent of each other

2. What is the mean and standard deviation of the amount Sally spends on breakfast daily?

Let's recall that:

1. The mean of the sum of two independent variables is the sum of their means.

2. The variance of the sum of two independent variables is equal to the sum of their variances.

Therefore,

Mean of the amount Sally spends on breakfast daily = Average price of a cup of coffee + Average price of a muffin

Replacing with the values we know:

Mean of the amount Sally spends on breakfast daily = 1.40 + 2.50

Mean of the amount Sally spends on breakfast daily = $ 3.90

Variance of the amount Sally spends on breakfast daily = Variance of the price of a cup of coffee + Variance of the price of a muffin

Replacing with the values we know:

Variance of the amount Sally spends on breakfast daily = 0.30² + 0.15²

Variance of the amount Sally spends on breakfast daily = 0.1125

Standard deviation of the amount Sally spends on breakfast daily = √0.1125

Standard deviation of the amount Sally spends on breakfast daily = $ 0.34 (rounding to the next cent)

3. What is the mean and standard deviation of the amount she spends on breakfast weekly (7 days)?

Mean of the amount Sally spends on breakfast weekly = 7 * Mean of the amount Sally spends on breakfast daily

Mean of the amount Sally spends on breakfast weekly = 7 * 3.90

Mean of the amount Sally spends on breakfast weekly = $ 27.30

Variance of the amount Sally spends on breakfast weekly = 7 * Variance of the amount Sally spends on breakfast daily

Variance of the amount Sally spends on breakfast weekly = 7 * 0.1125

Variance of the amount Sally spends on breakfast weekly = 0.7875

Standard deviation of the amount Sally spends on breakfast weekly = √0.7875

Standard deviation of the amount Sally spends on breakfast weekly = $ 0.89 (rounding to the next cent)

3 0

4 years ago

How do you solve 1/2 / -2/5 + (-1/4)

nekit [7.7K]

1/2 / -2/5 + (-1/4)
= 1/2 * (-5/2) - 1/4
= -5/4 - 1/4
= -6/4
= -3/2

hope it helps

8 0

4 years ago

Read 2 more answers

If you travel at 70 mph, write an equation to show how far you have traveled (y) in x hours

padilas [110]

Answer:

y = 70x

Step-by-step explanation:

8 0

3 years ago

Neena just earned her bachelor’s degree. based on her qualifications and desire for the highest pay scale, which career would sh

Lilit [14]

Based on Neena's qualifications and desire for the highest pay scale, she would be best suited for a supply chain manager career.

<h3>Who is a supply chain manager?</h3>

A supply chain manager ensures the movement of goods, from manufacturers and suppliers to the ultimate customer.

A supply chain manager oversees and manages the production flow:

Raw materials acquisition
Production logistics
Delivery logistics.

A supply chain manager requires the following skills:

Business Management
Leadership
Transportation
Manufacturing production and processes
Customer service
Personal relationships
Analytical skills.

Thus, based on Neena's qualifications and desire for the highest pay scale, she would be best suited for a supply chain manager career.

Learn more about supply chain management at brainly.com/question/18793688

#SPJ1

5 0

2 years ago