chikenlittle chikenlittle
  • 24-02-2017
  • Mathematics
contestada

the length of a rectangle is 3 inches more than its width. if the length of the diagonal is 15 inches, find the dimensions of the rectangle

Respuesta :

wolf1728
wolf1728 wolf1728
  • 24-02-2017
L = W + 3

L^2 + W^2 = 15^2
L^2 + W^2 = 225
L^2 + W^2 = 225

(W+3)^2 + W^2 = 225
W^2 + 6W + 9 + W^2 = 225
2 W^2 + 6W = 216
2W^2 + 6W -216 = 0

W = 9
L = 12

Answer Link

Otras preguntas

Can you help me with the first two questions?
A  5 gallon mixture contains 40% acid. A 3 gallon mixture contains 50% acid. What percent is obtained by putting the two mixtures together?
What is. One fifth times40?
whats 416 divided by 4?
how much interest will be paid in 2 years for a loan of $1500 at 8.25% simple interest ?
75% of a number is 120. what is 40% of the number?
Why were bananas and camels so significant in early African history? What do they represent? How did they change the way people lived? Explain
Three single-digit numbers multiply to make 504          Write the missing numbers
The sum 9/10 and 1/32 is less than or greater than 1?
what is the value of m in 13m=52 a/65 b/4 c/5 d/39