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Arada [10]
3 years ago
14

a rectangle is 4 times as long as it wide. if the length is increased by 4 inches and the width is decreased by 1 inch, the area

will be 60 square inches. what were the dimensions of the original rectangle. and please help me
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
6 0
x-\ width\\
y-\ length\\
4x=y\\
(y+4)(x-1)=60\\
(4x+4)(x-1)=60\\
4x^2-4x+4x+4=60\ \  | subtract\ 4\\
4x^2=56\ \ | divide\ by\ 4\\
x^2=14\\
x=\sqrt{14}\\
y=4\sqrt{14}\\\\
Dimensions:\ width=\sqrt{14}in,\ length=4\sqrt{14}in.
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denis-greek [22]

Answer:

  • Yes

Step-by-step explanation:

Let the speed of the car is c and speed of the plane is p.

<h3>We are given:</h3>

The speed of the plane is 7 times the speed of the car

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The distance traveled is

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The time difference to travel this same distance is 3 hours.

<h3>We know that:</h3>
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Find the time for car and plane and their difference.

<h3>Car</h3>
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<h3 /><h3>Plane</h3>
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<h3 /><h3>The difference</h3>
  • 315/c - 45/c = 3

<u>Solve it for c:</u>

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6 0
2 years ago
A grocery store sells a bag of 6 oranges for $2.34. If Mav spent $1.95 on oranges, how many did she buy?
poizon [28]

Answer:

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Step-by-step explanation:

to solve this problem we need to make a cross-multiplication equation

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? is the number of oranges that are needed to be found that were bought

2.34/6 = 1.95/?

Now we cross multiply 6 and 1.95 = 11.7

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2 years ago
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kherson [118]
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