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e-lub [12.9K]
3 years ago
13

The length of a rectangle is 4 meters less than three times its width. Its area is 615 square meters. What are the dimensions of

the rectangle?
Mathematics
1 answer:
Anarel [89]3 years ago
6 0
Area= length*width

width=W

W*(3W-4)=615
3W^2-4W=615
3W^2-4W-615=0
W=41
W=-45
But W cant be a negative number so it is 41m (width)
The length is (41*3)-4=119m (length)
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The tank at a gas station contained 400 gallons of gas. A tanker truck that contained 8,100 gallons of gas filled the station's
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Answer:

1300

Step-by-step explanation:

Let the amount put in the station's tank = x

4(400 + x) = 8100 - x                           Remove the brackets

1600 + 4x = 8100 - x                            Subtract 1600 from both sides

1600 - 1600 + 4x = 8100 - 1600 - x     Do the subtraction

4x = 6500 - x                                        Add x to both sides

4x + x = 6500 - x + x        

5x = 6500                                            Divide by 5

5x/5 = 6500/5                                      

x = 1300

1300 gallons were added to the station's tank.

3 0
3 years ago
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The shape of Oklahoma can almost be divided into 2 perfect rectangles and 1 triangle. About how many square miles does Oklahoma
Sav [38]
The answer is 63,800 mi²


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4 0
3 years ago
3/5 of Jill's 30 page photo album is full. She wanted to set aside 1/4 of the pages that are in there for vacation. How many pag
ElenaW [278]
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3 0
3 years ago
Help me pls.
salantis [7]

Answer:

1. 424

2.471

3.512

Step-by-step explanation:

1. 10×12+8×10+8×13+8×15

=120+80+104+120

=424

2. 5×24+9×24+9×15+9×15

=120+216+135

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3 years ago
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den301095 [7]

Answer:

10.28425

Step-by-step explanation:

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