kimsooyun1109oruz6m kimsooyun1109oruz6m

20-06-2017
Mathematics

contestada

the length of a rectangle is one unit more than its width. if the area is 30 square units, find the dimensions of the rectangle

Respuesta :

20-06-2017

A=xy and y=x+1 so

A=x(x+1)

A=x^2+x

x^2+x-A=0 since A=30

x^2+x-30=0

x^2-5x+6x-30=0

x(x-5)+6(x-5)=0

(x+6)(x-5)=0, since x>0 to have any meaning...

x=5 units, and since y=x+1

y=6 units.

Answer Link

Otras preguntas

Luke jogged a total of 56.5 miles last week. If Luke jogged the same distance, d, each day for 3 days and half that distance on each of the remaining days, wri

Which US president in the 80's-90's whose son also became president?

A 10-meter long ramp has a mechanical advantage of 5. What is the height of the ramp?

What is a close approximation of the circumference of a cake pan that is 9 inches across at its widest spot ? A) 14.2 inches B) 21.7 inches C) 28.3 inches D) 6

Examples of analogous structures are a. the tails of mice and rats. b. the limbs of humans and apes. c. the wings of bats and birds. d. all of the above

Acceleration refers to a.increasing speed b.decreasing speed c.changing direction d.all of the above

8x-2=-9+7x how do I solve this?

explain how you can use a number line to show that 5/8 is greater than 3/8

In what time will $400 amount to $512 if the simple interest is calculated at 14% per annum?

One half of the birds at the pet store are yellow. Tara buys one of the yellow birds. Then one third of the birds at the store are yellow. How many yellow birds