lorteggga17 lorteggga17

05-02-2017
Mathematics

Answered

Find the dimensions of a rectangle whose width is 7 miles less than its length and whose areas is 78 square miles.

Verified Answer :

MichaelLiu MichaelLiu

05-02-2017

W = L - 7
WL = 78

(L-7)L = 78

L^2 - 7L - 78 = 0
Factorize: (L-13)(L+6) = 0

L = 13 or -6

A length cannot be negative, so the length must be 13 miles.
The width is 13-7 = 6 miles.

Answer Link

Related Questions

Sara is 11 years old today Represent a saras age in years

Shad grids to show that 2 ones is the same as 20tenths

Explain this example of nonexperimental design The Nurses Health study classified individuals according to whether they received HRT Subjects were followed for

Julie the soccer teams captain wants to borrow her parents car to drive to the tournament Her parents tell her that she has to pay for the gas she uses The car

Find the remainder when fx 4x3 20x 50 is divided by x 3

The difference between a want and a need is that a need is necessary for survival Which of the following would NOT classify as a need A Air B Watches C Water

The microphone is designed for occasions when several people share the lecterna Lavaliere b Unidirectionalc Omnidirectional

In an experiment you are asked to react hydrochloric acid with sodium hydroxide When measuring the volume of the reactants which instrument would give the great

Electromagnetic waves can transfer energy without which of the following A Medium B Electric field C Magnetic field D Change in either a magnetic or an electric

yasmin looked at the pattern 2 16 18 54 and determined that the next number should be 162 what type of reasoning did she use

Web Analytics