danetteshyiene danetteshyiene

16-01-2015
Mathematics

contestada

Five times Carl's age plus three times Jill's age equals 110. Jill's age is also two times Carl's age. How old is Carla ?

Respuesta :

16-01-2015

x - Carl's age
y - Jill's age

[tex]5x+3y=110 \\ y=2x \ \ \ |\times (-3) \\ \\ 5x+3y=110 \\ \underline{-3y=-6x} \\ 5x+3y-3y=110-6x \\ 5x=110-6x \\ 5x+6x=110 \\ 11x=110 \\ x=10[/tex]

Carl is 10 years old.

Answer Link

Otras preguntas

Crystals that have a sea of delocalized electrons _________. A. are made of alternating ions. B. are very brittle. C. have covalent bonds. D. conduct electricit

Commercial paper isa. ) loans made by commercial banks b.) loans made by the federal reserve bank to its members c.) a corporations short term notes d.) a corpo

What test does startup UEFI/BIOS perform when you first turn on a computer to verify it can communicate with essential hardware devices?

Juniper Company uses a perpetual inventory system. The company purchased $9,750 of merchandise on August 7 with terms 1/10, n/30. On August 11, it returned $1,5

2 Points Which visual aid best supports the purpose of arguing for the importance of high school graduation in finding a job? O A. A video that shows students a

Tom's Shoes makes a profit from selling its shoes, provides free shoes to children in countries in need, encourages volunteers to be involved in donations of sh

The IT infrastructure components should be evaluated based on their expected financial value. All of the following are used to quantify the financial value of I

niña rented a bicycle while she was on vacation. She paid a flat rental fee of $75.00 plus $9.50 each day. The total cost was $456. how many days did she rent t

A student conducted a study and reported that the 95% confidence interval for the mean ranged from 46 to 54. He was sure that the mean of the sample was 50, tha

The number and abundance of similar organisms in the biosphere that can successfully interbreed refers to ____. A. genetic diversity B. marine pH diversity C. e