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lesya [120]
3 years ago
12

n 1863, President Abraham Lincoln gave his famous Gettysburg Address. It starts, “Four score and seven years ago....” Four score

and seven is equal to 87. How many years are in a score? What year was President Lincoln referring to?
Mathematics
1 answer:
kolbaska11 [484]3 years ago
5 0

Answer:

20, 1776

Step-by-step explanation:

A "score" amounts to 20.  Subtract 87 from 1863 to obtain the year in question.  It was 1776, which is generally regarded as the birth year of our nation.

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3 years ago
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horsena [70]

Answer:

  • x =  {0, π/2, 3π/2, 2π}

Step-by-step explanation:

  • cotx cos x - cot x = 0
  • cotx( cosx - 1) = 0

1. <u>cotx = 0</u>

  • x = π/2 + πn
  • In the interval [0, 2π] we have π/2 and 3π/2

2. <u>cosx = 1</u>

  • x  = 0 + 2πn
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<u>So the solution set is:</u>

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3 0
2 years ago
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Evgesh-ka [11]

Answer:

C. Add the equations

Step-by-step explanation:

Adding both the equations will help eliminating 5y.

6 0
2 years ago
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Pachacha [2.7K]
5. The answer is D
s \leqslant 160
because it says no more than 160 so it's possible to be equal to 160.

6.
x + 7 > 2 \\ x > 2 - 7 \\ x >  - 5
So the answer is A
4 0
2 years ago
Read 2 more answers
Marking Brainliest :)
____ [38]

Answer:

Unlikely

Step-by-step explanation:

The probability of picking a number divisible by 5 is 2/12 or 1/6. So its pretty unlikely.

5 0
2 years ago
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