vickyly vickyly

01-09-2016
Mathematics

contestada

Find the greatest product using rational rational numbers with a sum of 20

Respuesta :

01-09-2016

Hello,

Let's be x and y the 2 numbers

x+y=20==>y=20-x
P(x)=x*y=x*(20-x)=20x-x²
Max(P(x))==>P'(x)=0= 20-2x==>2x=20==>x=10

A product is maximum is the 2 numbers are equals;

Numbers are 10 and 10 and product=100

Answer Link

Otras preguntas

Palabras Parecidas a lluvia

Which of the following terms best describes what an economy experiences when the prices of goods and services increase and the value of currency decreases?

Which expression best represents the difference between triple a number and double a number? a. 3x - 2x b. 2x - 3x c. x3 - x2 d. x2 - x3

Twelve eggs cost $2.09.How much would 18 eggs cost?

Is 7.232 bigger than 76.343

a small airplane used 5 2/3 gallons of fuel to fly a 2 hour trip. how many gallons were used each hour?

True or False: A flame test can be used to identify the presence of certain elements in a compound?

A gene is to a chromosome as a. a pea to a pod b. a front is to a back c. a bike is to a car d. a building is to a window

can you convert 300 grams to ounces

The Mamluks, a Muslim army from Egypt, were able to put an end to the conquerings of what group? Chinese Armenians Persians Mongols