spamneggs2010
spamneggs2010 spamneggs2010
  • 01-12-2019
  • Mathematics
contestada

The area of an interactive whiteboard is 3000 square inches, and its perimeter is 220 inches. find the dimensions of the whiteboard.

Respuesta :

spark10 spark10
  • 01-12-2019

Answer:

50, 60, 50, and 60

Step-by-step explanation:

xy = 3000

2x + 2y = 220

Rewrite the second equation

y = -x + 110

Substitute this into the first equation.

x(-x + 110) = 3000

-x^2 + 110x - 3000

Divide by -1

x^2 - 110x + 3000

(x - 60) (x - 50)

x = 60, 50

When x = 60, y = 50 and vice versa, so the sides are 50, 60, 50, and 60.

Answer Link
Аноним Аноним
  • 12-05-2020

Answer:

Step-by-step explanation:

Do you still need help

Answer Link

Otras preguntas

What is the sum of all the terms in the 10th row of Pascal's Triangle
Is it really incorrect to start a sentence with “and”?
In the 1920s, controversies over Prohibition, the National Origins Act, and the Scopes trial all reflected disagreement over the (1) effects of demobilization (
how does classical literture compare with enlightment literture
what is the solution set of the equation x/5 + x/2=14
The caste system in India was characterized by
What is one way that some bacteria are helpful to the human body? How do some bacteria harm the body?
is 0.221 between 0.2 and 0.225?
Garrett is 64 inches how many centimeters tall is he round your answer to the nearest tenth of a centimeter. 1 in.=2.54cm
In which compound do atoms form bonds by sharing electrons A) H2O B)CaO C) Na2O D) MgO