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
Vadim26 [7]
3 years ago
13

Jefferson High School is looking to expand its student parking lot by expanding the existing lot as

Mathematics
2 answers:
marissa [1.9K]3 years ago
3 0

brainly.com/question/3577543

This was already answered.

N76 [4]3 years ago
3 0

Answer:

The value of x is 60 ft.

Step-by-step explanation:

The area of a rectangle is

A=length \times width

The area of school is

A=165\times 300=49500

The area of old lot with school is

A=(165+75)(300+75)=90000

The area of old lot without school is

A_1=90000-49500=40500

The area of new lot with school is

A=(165+75+x)(300+75+x)=x^2 + 615 x + 90000

The area of old lot without school is

A_2=x^2 + 615 x + 90000-49500=x^2 + 615 x + 40500

It is given that the area of new parking lot will be twice the size of the old parking lot.

2A_1=A_2

2(40500)=x^2 + 615 x + 40500

0=x^2 + 615 x -40500

0 = (x - 60) (x + 675)

x=60,-675

The value of x can not be negative. Therefore the value of x is 60 ft.

You might be interested in
Cindy can type 65 words per minute. David can type 75 words per minute. In 7 minutes, how many more words can David type than Ci
DENIUS [597]

Answer:

70

Step-by-step explanation:

It's 70 because first you have multiply for Cindy's words 65×7=455 then multiple David's 75 word times 7 and you get 525. Lastly, You subtract both of their totals and get 70

Hope this helped!

6 0
3 years ago
Imagine the fire department had to evacuate the 25th floor of an office building. For firefighters to safely reach people at thi
joja [24]

Answer:

Check Explanation

Step-by-step explanation:

Some information required to answer this question is missing, but on a general basis, here goes the carefully researched response.

Majority of popular truck ladders are about 75 to 105 feet long. There are special truck ladders that reach up to 125 feet.

The length of a truck ladder is naturally limited by weight. The weight has to not be too much so that the truck can still move at a good enough speed on the roads. The weight of these ladders are primarily dependent on the strength of the metal used to make them.

At the top of these ladders, on a windy day, eind interference can cause the ladder to move back and forth all over the place, rhereby endamgerimg lives further and using a light material because we want the truck to still be able to move, will not work because light ladders especially, are easily carried by wind.

The 105-foot aerial ladder can reach 7 to 8 floors depending on the height of the floors.

The 25th floor of an office building can be accessed using a ladder that is about 225 ft long and that simply, is not feasible at all to manufacture this ladder considering the required weight and how too far away in the air this ladder would be, there would be little or no control over this.

Hence, a more realistic solution would be an helicopter that is steadied to slowly get people out of that floor.

Also, if the elevators or stairs are still accessible, these are better alternatives than a 225 ft long ladder aiming to reach the 25th floor.

Hope this Helps!!!

4 0
3 years ago
Renee hiked for 3 3/4 miles. After resting, Renee hiked back along the same route for 2 1/4 miles. How many more miles does Rene
Shtirlitz [24]

Answer:

1 1/2 miles

Step-by-step explanation:

3 3/4 - 2 1/4..

3/4 - 1/4 = 2/4=1/2

3-2= 1

1+1/2=1 1/2 miles

3 0
2 years ago
What is six less than 9
Alex73 [517]

Answer:

3

Step-by-step explanation:

9-6=3

4 0
3 years ago
Can somebody please help me with these?
alexdok [17]

Answer:

r=52, v=9.96, a=-8.5 all calculated

6 0
3 years ago
Other questions:
  • In the data set below, what is the mean absolute deviation?
    10·1 answer
  • (3,4) and (-5,6) <br><img src="https://tex.z-dn.net/?f=%283%2C4%29%20and%20%28-5%2C6%29%20" id="TexFormula1" title="(3,4) and (-
    8·1 answer
  • June has a savings account with an annual simple interest rate of 2.6%. She hopes to gain $6,500 in interest over a period of el
    5·2 answers
  • Anyone wana be my friend if you do lets zoom and get stuff doneh
    7·2 answers
  • What is the total cost, in dollars, to have the logo painted on the office building?
    9·1 answer
  • 137x8 multiply with expanded form please help 10 ponte for your help please help!
    5·1 answer
  • A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
    12·1 answer
  • What is the value of x?​
    11·2 answers
  • Simplify 6⁢(3⁢x - 5) + 5⁢(2⁢x - 1).
    11·1 answer
  • Find BC.<br> Round to the nearest tenth.<br> А<br> 84°<br> 16<br> B<br> 51°
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!