1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cerrena [4.2K]
3 years ago
8

The length of a rectangle is twice its width. the perimeter is 60 ft. find its area.

Mathematics
1 answer:
ollegr [7]3 years ago
5 0
I hope this helps you


width w



lenght 2w


perimeter =2 (width +length )


60=2 (w+2w)


30=3w


w=10


Area= 2w.w


Area = 2.10.10


Area =200
You might be interested in
if an amount of $100 in a savings account increases by 10% , then increases by 10% again, is that the same as increasing by 20%
Elina [12.6K]


100 + 100 * 10/100 = 110

NOW 110 INCREASES BY 10 %, 110 + 110*10/100 = 110+ 11 = 121

INCREASE OF 20 % = 100 + 100*20/100= 100+20 = 120

SO IT IS NOT SAME


5 0
3 years ago
Read 2 more answers
In a small city, 18% of the people are voters. If there are 5400 voters, then what is the population in that city?
Aleonysh [2.5K]

Answer:

30,000\ people

Step-by-step explanation:

Let

x-----> the population of the city

we know that

using proportion

\frac{5,400}{18\%}=\frac{x}{100\%}\\ \\x=5,400*100/18\\ \\x=30,000\ people

8 0
3 years ago
What is the direct linear variation equation for the relationship?
defon
\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ K}}&\cdot&x
\\ \\
&&  y={{ K }}x
\end{array}
\\ \quad \\

\begin{cases}
y=4\\
x=12
\end{cases}\implies y=Kx\implies 4=K\cdot 12

solve for "K", to see what "K" is, or the "constant of variation",
once you found K, plug it back in y=Kx, and that's the equation
3 0
3 years ago
A sound wave enters a new medium where sound travles faster. How does this affect the frequency and wavelength of the sound?
zhenek [66]

Answer:

The frequency doesn't change. If the wavespeed increases, then the wavelength must also increase ... It's just the distance the wave travels during each complete wiggle.

Step-by-step explanation:

  • Sound waves are a type of mechanical wave which requires a material medium for transmission. The transmission of such waves occurs as a result of vibration of particles in the material medium. The faster the vibration of the particles the higher the speed of the sound waves.
  • When a sound enters a new medium where the sound travels faster, it means the vibration of particles is high, and the wavelength of the waves increases which means the speed of the wave has increased. The frequency on the other hand will remain constant.

4 0
3 years ago
X/3+10=15 I don't know how to solve this I'm confused and don't know where to start
NARA [144]
X/3 +10=15
         -10   -10
x/3       =5

so the x will be 15 because if you multiply 3x5 = 15

7 0
3 years ago
Other questions:
  • What is the y intercept
    14·1 answer
  • Which of the following expressions is equal to -x2 - 36?
    7·1 answer
  • How do I add: 1/3+1/4?
    7·2 answers
  • 4. A bakery can make 58 packages of cookies
    13·1 answer
  • Cameron is designing a calendar as a fund raising project for math class. The cost of printing is $500, plus $2.50 per calendar.
    13·1 answer
  • I don't get how any of these answers could be it.
    13·1 answer
  • Find the quotient.<br> 4/5 ÷ 40<br>a.50 <br> b.32  <br>c.5/10 <br> d.1/50
    7·2 answers
  • Pls help will give brainliest
    6·1 answer
  • A city has a population of 1300. If the city’s population grows 30%, what is its new population?
    15·1 answer
  • 50 POINTS
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!