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victus00 [196]
3 years ago
15

If you can run 2/5 of a mile in 1/2 hour, how far can you run in 1 1/2 hours?​

Mathematics
1 answer:
forsale [732]3 years ago
5 0

Answer:

1 1/5 or 6/5

Step-by-step explanation:

So you get 2/5 every 1/2 hour so take the amount you have and times it by 3.

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A rectangular lawn, 100 feet long by 50 feet wide, is to have two sidewalks installed that will cut the lawn in half both ways,
Damm [24]

Answer:

3.41 feet

Step-by-step explanation:

Area = Length × Breath

Area of the rectangular lawn = 100 × 50

                                                = 5000 feet²

The sidewalk must occupy an area no more than 10% of the total lawn area.

So, the area of the sidewalk would be not more than  = 10% × 5000

                                                                                         = 0.10 × 5000

                                                                                        = 500 feet²

Let the width of the sidewalk = x feet

area of the side walk = (L×W of the long way) + ((L-x)×W of the short way)

(100 × x) + ((50 - x) × x) < 500

100x + (50-x)(x) < 500

-x²  + 150x < 500

-x² + 150x = 500

-x² + 150x - 500 = 0

By using quadratic formula

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{(-150)\pm\sqrt{(150)^2-4(-1)(-500)} }{2(-1)}

x=\frac{-150\pm \sqrt{20500} }{-2}

x=75-5\sqrt{205} or x=75+5\sqrt{205}

x = 3.41089 ≈ 3.41 feet  or  x = 146.58

Therefore, width of the sidewalk would be 3.41 feet.

5 0
3 years ago
What is greater, 2/3 or 7/8?
user100 [1]
\frac{2}{3} = \frac{2 \times 8}{3 \times 8}=\frac{16}{24} \\ \\&#10;\frac{7}{8}=\frac{7 \times 3}{8 \times 3}=\frac{21}{24} \\ \\&#10;16

7/8 is greater.
7 0
3 years ago
Read 2 more answers
What is the slope (rate of change) for the table?
kvv77 [185]

Answer:

d

Step-by-step explanation:

i did this one

3 0
2 years ago
X - Y =4<br> - 2x+y=18<br> Linnear system
Dmitry_Shevchenko [17]

there is no answer to this  so i can't help you.?

8 0
3 years ago
A Hexagonal pyramid is located on top of a hexagonal prism. How many vertices are there?
Scrat [10]

For a better understanding of the answer given here, please go through the diagram in the attached file.

The diagram assumes that the base of the hexagonal pyramid is an exact fit (has same dimensions as the face of the hexagonal prism).

As can be seen from the diagram, the common vertices are A,B,C,D,E,F which are 6 in number.

The bottom vertices are G,H,I,J,K,L, which, again are 6 in number.

The Apex of the pyramid, P is one more vertex.

Thus, the total number of vertices in a Hexagonal pyramid is located on top of a hexagonal prism will be the sum of all these vertices and thus will be:

6+6+1=13

3 0
3 years ago
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