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Andrew [12]
2 years ago
15

You walk 2 miles in 1/2 hour ate that rate , how long will it take to walk 3 miles

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
5 0
45 minutes 3/4 of an hour
irina [24]2 years ago
4 0

If you walk 2 miles in 1/2 an hour, each mile took 15 minutes to walk. Add one more mile and that equals 45 minutes.


It will take 45 minutes to walk 3 miles.

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A square television screen has sides that are 23 inches. Find the approximate length of its diagonal to the nearest tenth of an
Lana71 [14]

Answer:

92

Step-by-step explanation:

6 0
3 years ago
1. The sum of first n terms of an arithmetic sequence is 3n²+4n
valentina_108 [34]

Answer:

<h3>           a.  a₁=7,     b.  a_n=7n+1,    c.  a₂₀=141</h3>

Step-by-step explanation:

a.

 a_1=S_1=3\cdot1^2+4\cdot1=3+4=7

b.

   a_1+a_2=S_2\\\\a_1+a_1+d=3\cdot2^2+4\cdot2\\\\7+7+d=3\cdot4+8\\\\14+d=12+8\\\\d=6\\\\\\a_n=a_1+d(n-1)\\\\a_n=7+6(n-1)\\\\a_n=7+6n-6\\\\\underline{a_n=7n+1}

c.

 a_{20}=7\cdot20+1=141

5 0
2 years ago
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Ipatiy [6.2K]
At every 1.0 unit, boiling point decreases 1.8 unit, which means the slope m = -1.8.
6 0
3 years ago
Help and plz show work! No links! Hurry!!!!!
malfutka [58]

Answer:

good you got the answer

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
If two similar polygons have perimeters of 36 and 21 inches.
jek_recluse [69]

Answer:

91

Step-by-step explanation:

Two similar polygons, means a similarity would exist in both polygons

  • Perimeter of a rectangle = 2(l +w)
  • Perimeter of the larger rectangle = 36 (because it's the largest figure)
  • equation becomes  36 = 2(L + W)
  • since L = 14, it becomes = 36 = 2(14 +W)
  • 36 = 28 + 2W
  • 2W = 36 - 28 = 2w = 8
  • w = 4.

Now we assume that since the rectangles are similar, they would have similar dimensions, in this case Width. so with this, we find length  of smaller rectangle.

  • 21 = 2(L + 4) = 21 = 2L + 8
  • 2L = 21 - 8 = 2L = 13
  • L = 13/2 = 6.5.

lastly the product of the length of both polygons = 14 * 6.5 = 91.

Their Products length is 91

6 0
2 years ago
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