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Alexus [3.1K]
1 year ago
10

a certain bridge is 4,024 feet long. approximately how many minutes does it take to cross this bridge at a constant speed of 20

miles per hour?
Mathematics
1 answer:
Taya2010 [7]1 year ago
3 0

It take 2 minutes to cross this bridge at a constant speed of 20 miles per hour.

<h3>What is unitary method?</h3>

The unitary method is a method for figuring out a single unit's value, then multiplying that value by itself to get the required value. An individual or singular unit is referred to as unitary. Because of this, the goal of this method is to determine values in reference to a single unit. The unitary technique can be used, for instance, to determine how many kilometers a car can go on one litre of gas if it can travel 44 km on two litres of gas. A single unit's value is determined using the unitary approach, and the value of the necessary number of units can then be determined using this value.

To know more about unitary method ,visit:

brainly.com/question/28276953

#SPJ4

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Abby owns a comic book that originally sold for 12¢ in 1969. In 2014, the comic book had an appraised valued of $3,700. Given th
Trava [24]

Hi,

Answer: B) 25.82%

<u>My work:</u> For this problem you can easily achieve this problem (Preferably with a caculator) by taking the date’s 2014 and 1969 the time of growth and subtract them. When you do this you get the answer 45. From there you you take 45 (With caculator) and multiply it with 25.82 % (To do this you take 25.82 and press 2nd, then the percent). When you do this you get 11.619 which rounded is 12; furthermore, which is your answer.

I Hope I Helped!

3 0
4 years ago
A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
wlad13 [49]

Answer:

x = 600 m

y = 1200 m

Amax = 720000  m²

Step-by-step explanation:

Let call x the smaller side of the rectangular plot and y the largest ( we assume we have one y side bounded by a river: Then

A(p)  Area of the plot x*y

A(p) = x*y

And perimeter of the plot ( to be fenced ) is:

P(p)  = 2*x + y = 2400     ⇒  y  = 2400 - 2*x

Area of rectangular plot as function of x:

A(x) = x * ( 2400 - 2x )

Taking derivatives on both sides of the equation

A´(x) = ( 2400 - 2x ) + (-2) *x    ⇒  A´(x) = ( 2400 - 2x ) - 2x

A´(x) = 0      ⇒   2400 - 4x = 0    ⇒  4x  = 2400  

x = 600 m

And y =  2400 - 2*x

y = 2400 - 1200

y = 1200 m

And the largest enclosed area is  Amax = 1200*600

Amax = 720000 m²

4 0
4 years ago
This is too much for me <br> if you know please answer
SOVA2 [1]

Answer:

-4x + y + 6z

Step-by-step explanation:

Combine like terms (Terms with the same variable):

(2x + 5y - z) + (-6x - 4y + 7z)

Add straight across:

2x - 6x = -4x

5y - 4y = y

-z + 7z = 7z - z = 6z

-4x + y + 6z is your answer.

~

8 0
3 years ago
Read 2 more answers
You and your mom enter a drawing with 3 different prizes a total of 9 people enter
kodGreya [7K]

Answer:

the probability if that is what you are asking for is 1/3 of winning a prize

Step-by-step explanation:

6 0
4 years ago
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The sum of two numbers is 72, and one of them is five times the other. What are the two numbers?
patriot [66]

Answer:

60 + 12 = 72

Step-by-step explanation:

5x + x = 72

=> 6x = 72

=> x = 72 ÷ 6

=> x =12

∴ 5×12+12=72

=> 60 + 12 = 72

4 0
3 years ago
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