hdfysdjsfu1235 hdfysdjsfu1235

02-06-2018
Mathematics

contestada

One year ago liz was three times as old as her brother jack. in two years she'll be only twice as old as jack. how old are liz and jack now?

Respuesta :

a3541649783 a3541649783

02-06-2018

now she is x,one year ago,she is x-1,he is 1/3(x-1),in two years,she is x+2,he is 1/2(x+2)
we can get
1/3(x-1)+3=1/2(x+2)
x=10

Answer Link

Otras preguntas

write a system of three linear equations with three variables each that has the unique solution . write your equations in standard form. use the variables , , a

Back in the 1800s, Edison himself was a big fan of his phonograph "Of all my inventions, I liked the phonograph best.. What is the BEST way to revise the underl

Can anyone help me solve this problem?

A man steps into a NASA centrifugal training module for launch training. He must withstand the force of 6 G's for a total of 30 seconds without passing out. He

Brandon has a loyalty card good for a 5% discount at his local pharmacy. What number should he multiply the prices on the tags by to find the price he would hav

Good morning there.....

The volume V cm³ of a box, of height x cm, is given by (a) Find dv dx V = 4x(5-x)², 0 (b) Hence find the maximum volume of the box. (c) Use calculus to justify

WILL GIVE BRAINLIEST. Two objects attract with a gravitational force of 140 units. If the mass of one object is doubled and the mass of the other object is tri

Arrange events related to the development of Hinduism in the correct sequence. Group of answer choices The Harappa civilization declined. [ Choose ] The Vedas w

Round 10.099 to two d.p and one d.p., the neareat whole number.