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
navik [9.2K]
3 years ago
11

the length of a rectangular building is 6 feet less than 3 times t he width. The perimeter is 120 feet. Find the width and the l

ength of the building.
Mathematics
1 answer:
garri49 [273]3 years ago
5 0
Call the width x.  Note that the length is 3x-6.  We know that double the width plus double the length is 120, so we write an equation:

2(x)+2(3x-6)=120
2x+6x-12=120
8x-12=120
8x=132
x=16.5
If x is 16.5, the width is 16.5, and the length is 3 \cdot 16.5 - 6 = 43.5.
You might be interested in
Gail collects trading cards. Her favorites are baseball and football cards. For
mamaluj [8]
I think it’s c but don’t go with me see if others answer with a different answer :)
8 0
3 years ago
Read 2 more answers
Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2.4 h, and Car B traveled the dis
Arte-miy333 [17]
One way to go about this is to first list everything we know in the form of variables. This will make it easier to see how these numbers correlate instead of trying to remember formulas to plug these numbers into.

TimeA = 2.4h (time of Car A to travel)
TimeB = 4h (time of Car B to travel)
SpeedA = SpeedB + 22mph (Speed of Car A<span>)
</span>SpeedB = SpeedA - 22mph (Speed of Car B<span>)
</span>Distance = x (the distance traveled by each car)

We are looking for SpeedA. How can we find this? Well, we know that speed multiplied by time is equal to distance, so let's start there.

SpeedA * 2.4h = x
<span>(SpeedB + 22mph) * 2.4h = x
</span>(2.4h * SpeedB) + 52.8miles = x

We also know that:
SpeedB * 4h = x

Since both of these equations are equal to x, we can combine them:
SpeedB * 4h = x = <span>(2.4h * SpeedB) + 52.8miles
</span>SpeedB * 4h = <span>(2.4h * SpeedB) + 52.8miles
</span>1.6h * Speed B = 52.8miles
SpeedB = 52.8/1.6 mph = 33 mph

<span>SpeedA = SpeedB + 22mph = 33mph + 22mph = 55mph
</span>
Therefore, Car A was traveling at 55mph.
3 0
4 years ago
What is the volume, in cubic centimeters, of a right rectangular prism that has a lenght of 4 centimeters, a width of 9 centimet
Temka [501]

Answer:

The volume of the prism is 360 cm^3.

Step-by-step explanation:

The rectangular prism is a three dimensional figure formed by six rectangular faces. It's volume is given by the product of it's three dimensions. The calculation for the volume of this prism is shown bellow:

volume = width*height*length

volume = 9*10*4

volume = 360 cm^3

The volume of the prism is 360 cm^3.

7 0
3 years ago
Read 2 more answers
Solve the system of equations 3x + 4y = -23 x=3y+1
IrinaVladis [17]

Answer:

x=-\frac{4}{83} \\y=\frac{3}{83}

<em>Hope this helps!!!</em>

Sofia

6 0
3 years ago
Read 2 more answers
Please solve<br>x^2+6x+5=0​
Inessa [10]

Answer:

plus the other number and the other one

8 0
3 years ago
Other questions:
  • Suzanne bought 50 apples at the apple orchard. She bought 4 times as many red apples as green apples. How many more red apples t
    11·1 answer
  • in a parallelogram with area of 40, a side is 3 less than the altitude drawn to that side. Find the altitude of the parallelogra
    9·1 answer
  • A homeowner plans to hang wallpaper on one wall of a bedroom that is 15 feet long. If a strip of wallepe wallpaper is 20 INCHES
    13·1 answer
  • you go into best buy to purchase a new TV and bring 500 with you.The TV cost 466 and there is a 7% sales tax. how much will u ha
    14·1 answer
  • cho hs y=x^3/3-x^2+mx-1 m là tham số thực. có bnh gt nguyên của m thuộc (-10;10) để hs đb trên (-vô cùng;2)
    7·1 answer
  • A bottlenose dolphin is 10 feet below sea level. Then it begins to dive at a rate of 9 feet per second. What is the equation of
    14·2 answers
  • Emily and Molly are selling pies for a school fundraiser. Customers can buy cherry pies and lemon pies. Emily sold 4 cherry pies
    11·1 answer
  • Triangle GHJ with vertices G(-2, 4), H(3, 6), and J(3, -2) is dilated by a factor of 1/3 centered at the origin. What are the co
    11·1 answer
  • Solve these [7x+5](8x+3)<br> (3-8x)(4-5x)<br> 2(4x+7)(6x-5)
    13·1 answer
  • minute maid states that a bottle of juice contains 473 ml. consumer groups are interested in determining if the bottles contain
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!