chloemarie209 chloemarie209

19-01-2015
Mathematics

contestada

The length of a rectangle is 2 cm less than 7 times the width. The perimeter is 60 cm. Find the width and length.

Respuesta :

macio06 macio06

19-01-2015

Lets assume width=x. Then lenght its 7*x-2
We know that perimeter its 2*length+2*width=60
Now we substitute our x and 7x-2
2*(7x-2)+2x=60
14x-4+2x=60 /+4
16x=64 /:16
x=4 - its the width
7*x-2, where x=4
28-2=26 - length

Answer Link

Otras preguntas

Comparative advantage is the ability to produce more of a given product using a given amount of resources. A. True B. False

When the Australian economy was based on import-substitution manufacturing, A. domestic production assured national prosperity. B. protectionist policies were e

What is the traditional interpretation of why the French Revolution started?

Identify two different habitats in a prairie ecosystem.Name one organism found in each habitat.

Write 8,147,600 in word form

A Hindu wanting to work on spiritual awareness might decide to

Write 8,147,600 in word form

I really need help please the c/4 is a fraction 85+c/4=99

Colonists opposed new British taxes by protesting violently and Select one: A-deciding to compromise. B-writing defiant pamphlets. C-staging hunger strikes. D-r

ESTIMATE THE TOTAL WEIGHT OF 2 BOXES THAT WEIGH 9.4 LB AND 62.6 LB USING ROUNDING & COMPATIBLE NUMBERS. WHICH ESTIMATE IS CLOSER TO THE ACTUAL TOTAL WEIGHT?