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ivann1987 [24]
2 years ago
8

The length of a rectangle is three times the width. The perimeter of the rectangle is 40 inches. What is the area of the rectang

le (in square inches)?
Mathematics
2 answers:
Marizza181 [45]2 years ago
7 0
Answer: 75 square

Explanation:

Width is X

Length is 3x

Every rectangle has 2 equal widths x 2 equal lengths

Perimeter is 2x + 2(3x) = 40
X = 5

Width is now 5in

Length is now 15in

Area is 75in^2

Half of a perimeter is length + width, which equals to 20in

4x = 20, CX = 5
= 75 sq

*Mark me Brainliest if I responded well, thank you :)*
Rom4ik [11]2 years ago
5 0
75 square I hope this helps!
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PLZZZ HELPP NOWWWWW......
andreyandreev [35.5K]

Answer:

3.5% of 20, (0.035)*20, and 7% of 10

Step-by-step explanation:

Converting the mixed number (3 1/2) to a decimal yields 3.5, so 3.5% of 20 is correct.

3 1/2 is not equal to 3 1/2%, so 3 1/2 * 20 is not correct.

Converting the percentage to a decimal yields .035 which makes .35 too large, so (0.35) * 20 is not correct.

Changing the percentage to a decimal yields .035, so (0.035) * 20 is correct.

If you divide 20 by 2, you get 10, and if you multiply 2 by 3 1/2, you get 7. The 2 remains part of the expression, so it is equal to 3 1/2 of 20.

4 0
3 years ago
PLEASE HELP HURRY!! The image below shows two dilated figures with lines AB and A'B' drawn. If the larger figure was dilated usi
mash [69]

9514 1404 393

Answer:

  A'B' = 3×AB

Step-by-step explanation:

Any linear measure on the scaled-up drawing will be the measure of the original, multiplied by the scale factor.

  A'B' = 3×AB

3 0
3 years ago
three cones have a volume of 192π cm³.Cone A has a radius of 2 cm. Cone B has a radius of 3 cm. Cone C has a radius of 4 cm. fin
andrew11 [14]

9514 1404 393

Answer:

  A: 144 cm

  B: 64 cm

  C: 36 cm

Step-by-step explanation:

The volume of a cone is given by ...

  V = (1/3)πr²h

Solving for h, we get ...

  3V/(πr²) = h

Filling in the given values, we get ...

  3(192π)/(πr²) = h

  576/r² = h

Then the heights of the different cones are ...

  A: r = 2, h = 576/4 = 144 . . . cm

  B: r = 3, h = 576/9 = 64 . . . cm

  C: r = 4, h = 576/16 = 36 . . . cm

8 0
3 years ago
A circle is centered at (5, 4) and has radius 6. Write its equation in standard form.
dimulka [17.4K]
A circle equation is (x – h)^2<span> + (y – k)^</span>2<span> = r^</span><span>2 where (h,k) is the center and r is the radius. Now all we have to do is plug in the variables. 

Since (h,k)=(5,4) and r= 6

The answer would be C. 

Your welcome ;)





</span>
8 0
3 years ago
Please help! I’m very confused on this question. I’m not very good at geometry.
Ahat [919]

Well, to find the perimeter we have to add all of the side lengths, so let's do that:

2x+3 +2x+3 +2x

And we know that this equals 36 so let's solve for x

2x+3+2x+3+2x = 36

6x+6 = 36

6x = 30

x = 5

So we know know that x = 5.

Now all you have to do is plug in the values of x into the lengths

2(5) + 3

= 10+3

= 13 is the length of two of the sides.

2x

= 2(5)

= 10

And 10 is the length of the last side.


8 0
2 years ago
Read 2 more answers
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