mat6ovalcor2shuaM mat6ovalcor2shuaM

19-11-2016
Mathematics

contestada

Find two positive numbers whose product is 225 and whose sum is a minimum

Respuesta :

syed514 syed514

20-11-2016

Let S = x + y.

Since xy = 225, y = 225/x.
Substitute into the sum to get S = x + 225/x.
Then S' = 1 - 225/x^2, implying that 15/x = 1.
Then x = 15.
The other number is also 15.

Answer Link

Otras preguntas

Why metals are good thermal conductors, but polymers are not?

Impressionism introduced several new approaches that led to a dramatic shift in the nature of painting. Initially the art critics of the age did not understand

A television network commissioned a telephone poll of randomly sampled men. Of the 708 respondents who had children, 19% said "yes" to the question "Are you

Which of these is not applicable to tuning for some Overshoot on Start-up? Select one: 1)-No overshoot during normal modulating control only 2)-KC-0.2 KU 3)- KC

Two train whistles, and , each have a frequency of 392 Hz. is stationary and is moving toward the right (away from ) at a speed of 35.0 m/s. A listener is betwe

Help please with this

paragraph about books are our best compains

Les tried to evaluate 600 x 4 step by step. 600 X 4 Step 1 = 10 x 6 x 4 Step 2 = 10 x 24 Step 3 = 240 Find Les's mistake. Choose 1 answer: @ Step 1 B Step 2 C S

If the wavelength of orange light is 6 · 10-7 m, calculate its frequency. f = _______ Hz

what is the fastest a car can go?