etzzz3354 etzzz3354

15-05-2018
Mathematics

contestada

A rectangle has a area of 45 square units.The length is 4 units less than the width.What are the dimensions of the rectangle

Respuesta :

popalabdulqayou popalabdulqayou

16-05-2018

A = lw

A= 45 unit²

l= w-4

45= (w-4)w

45=w²-4w

w²-4w-45=0

(w-9)(w+5)=0

w=9, -5 so 9 is the width

l=9-4 =5 is the length

Answer Link

Otras preguntas

Was Diderot's Encyclopedia written entirely by Diderot himself?

how were the 13 colonies obtained by Britain

True or false Earths atmosphere, oceans, and continents began to form during the first sevral hundred million years of Precambrian time.

Which best describes the end behavior of y=-2x^3? As x > 0 increases, f(x) increases. As x < 0 decreases, f(x) increases. As x > 0 increases, f(x) dec

Daphne owns a night club and frequently entertains large crowds. She feels very comfortable on stage and loves to make people laugh. Justin can't bear even th

Can anyone help I’ll mark brainliest

which of the following is an irrational number

during which century was american archaeology closely linked to physical and social anthropology and linguisticsa) 1800sb) 1700sc) 1900s

the embryo began as a fertilized egg: 2 individual gametes joined to produce one diploid cell. once the egg is fertilized, what process is responsible for the d

Which of the following points lie in the solution set to the following system of inequalities? y ≤ x − 5 y ≥ −x − 4 A. (−5, 2) B. (5, −2) C. (−5, −2) D. (5, 2)