kaylarhys6068 kaylarhys6068

10-06-2018
Mathematics

contestada

Find the dimensions of a rectangle whose width is 10 miles less than its length and whose area is 75 square miles.

L= ?
W= ?

Respuesta :

mkryukova19 mkryukova19

10-06-2018

length = L
width =( L-10)

Area of rectangle =L*(L-10)

L*(L-10) = 75
L²-10L-75 = 0 -75= (-15)*5, -10= - 15+ 5
(L-15)(L+5)=0
L=15,L=-5

We can take only positive root,
so L=15 mi.
W=L-10=15-10=5
W=5 mi

Answer: L=15 mi, W=5mi.

Answer Link

Otras preguntas

which types of problems might appear in the college-level math section of ACCUPLACER?

What substance is acting as the Brønsted-Lowry acid in the following forward reaction? H2SO4 + H2O yields H3O+ + HSO4−

Why did the british want to expand control into the Ohio valley in the mid- 1700s? A. to foce the french out of north america B. To put french settelers there u

is this right?????????????????????

Before a three-for-one stock split, the shares outstanding were 5,000 shares at $12 par. After the split, what was the par and number of shares? A. 5,000 shares

what is the y intercept of -3x-5y=60

HEEEELLLLLLPPPPPPP!!!!!!!!!!!!!!! 90 POINTS!!!! I HAVE A QUIZ TOMORROW AND MY TEACHER HAS TAUGHT NOTHING!!!!

the himalaya mountains are the result of which interactions

The hourly wage increase each employee receives each year depends on their number of years of service. Every three years of service means an increase of $0.50 p

Soils refers to natural material from the earth, but not artificial material (like AstroTurf or asphalt). True False