16. A rectangle of length (4x - 1) cm and breath 2xcm has an area of 10cm2. Find

1 answer:

6 0

A) 2x(4x-1)=10

Expand

8x^2-2x=10

Divide all terms by 2

4x^2-x=5

4x^2-x-5=0

4x^2+4x-5x-5=0

4x(x+1)-5(x+1)=0

(4x-5)(x+1)=0

x is equal to -1 and 5/4

but, in this case, the side of a rectangle cannot be negative, so the only answer that is mathematically possible is 5/4

b) substitute 5/4 into given expressions

length: 4(5/4)-1 which is 4cm

width: 2*5/4 which is 2.5cm

c) plus all four sides together

2.5+2.5+4+4 which is 13cm

You might be interested in

Why is Junior a member of the Black-Eye-of-the-Month Club'? * Your answer :

Anastasy [175]

Answer:

Junior gets beat up at least once a month on the rez for having water on the brain, wearing glasses, seizing, lisping and stuttering

3 0

4 years ago

Help me with question 2 please!!!!!!!!

Yanka [14]

Can you show me the poem please? So I can answer because I don't know how the poem looks like so I can't tell you the structure

3 0

4 years ago

Based on the details in the story, what conclusion can be drawn about the central idea of the story?

just olya [345]

B. Samara identified a need in her community and worked hard to fulfill that need.

Hope I helped

8 0

3 years ago

Read 2 more answers

though muslims do not have holy day they typically gather one day a week pray.what do they call their meeting place.............

Law Incorporation [45]

They call their meeting place a mosque. They meet everyday. I researched about your question, Marly. Everyday they pray 5 times a day.

8 0

3 years ago

PLEASE HELP!!!

aniked [119]

Answer:

The essay uses vivid details to discuss a topic, offering information to help you learn more about it ----> description

The essay describes why something happened and other events thatoccurred because of it ----> cause and effect

The essay outlines a cause for concern, why it’s a concern, and what can be done to resolve it ----> problem and solution

The essay offers a sequence of events or steps to follow ----> chronological order

The essay describes two elements or people and discusses how they are alike and different ----> compare and contrast

Explanation: Text structures is the term used to refer to the different ways in which information can be presented in a text. Texts can be organized by giving a detailed account of an aspect, an issue, or a thing, that is to say by making description the main text structure, or by expressing the reasons why something happened as well as the results this thing or event brought about. Other ways of presenting information in a text is discussing a problem and evaluating ways of solving it, showing events in the order they happen or making reference to the similarities and differences found between two different people, groups or entities.

8 0

3 years ago

Read 2 more answers