![neekog11](/avatars/15433.jpg)
neekog11
19.08.2019 •
Mathematics
The length of a photograph is 3cm less than twice the width. the area is 54cm². find the dimentions of the photograph.
Solved
Show answers
More tips
- F Food and Cooking How to Choose the Right Olive Oil: A Comprehensive Guide...
- P Philosophy Is Everything We Strive for Eventually Achieved and Destroyed?...
- S Society and Politics Understanding Politics and Its Role in the Development of Civilization...
- P Philosophy Why Did God Create Man and Place Him in Obscurity?...
- S Society and Politics Skoptsy: Who They Are and How They Perform Castration?...
- O Other Childhood Fears: What Many of Us Experienced...
- P Philosophy What is Something for you?...
- H Health and Medicine Why Do Humans Have One Heart?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: Mathematics
- M Mathematics Tests of a new light led to an estimated mean life of 1,321 hours and standard deviation of 106 hours. The manufacturer will advertise the lifetime of the bulb using the...
- M Mathematics The relationship between feet and inches is a function. write an equation that shows how to find the number of inches (n, output) if you know the number feet (i, input)....
- G Geography Distinguish between ubiquitous resources and localized resources...
- C Chemistry 2A → B + C Two trials of the above reaction are run. The concentration of A in the second trial is three times that in the first. It is found that the initial rate of the...
Ответ:
w(2w-3)=54
2w²- 3w-54=0
A= 2 , B= -3, C= -54
sub values into quadratic formula
i attached picture of formula
Final you will be given 2 answers 6 and -4.5. -4.5 is rejected since a negative value cannot represent length because that just doesn't make sense.
w=6
Check:
L=2w-3
=2(6)-3
=12-3
=9
9*6=54
Therefore the dimensions of the photograph are 6 cm by 9 cm
Ответ: