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3 years ago

How do I do this? Please only the best help.

Mathematics

1 answer:

MissTica3 years ago

6 0

Answer:

77.5 degrees and 102.5 degrees

Step-by-step explanation:

Given that : one angle is25 degrees greater than another. Let the two angles be represented by a and b. Since one angle is 25 degreess greater than another, then:

b = a + 25 degrees

But;

a + b = 180 degrees (sum of angles on a straight line)

a + a + 25 degrees = 180 degrees

2a = 180 degrees - 25 degrees

a = 77.5 degrees

b = 77.5 degrees + 25 degrees = 102.5 degrees

Therefore the measures of all angles formed by the lines is either 77.5 degrees or 102.5 degrees.

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We'll say beginning amount is 100
Ending Amount = Beginning Amount / 2^n where n is the number of half-lives
100 hours mean six and 2/3 half-lives will elapse
Ending Amount = 100/2^(6.666666)
Ending Amount = 100 / 101.59
Ending Amount = 0.9843488532 
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http://www.1728.org/halflife.htm

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There are many more examples that you can write.

Keep in mind

1. Sum of Rational and irrational is always irrational.

2. Difference of rational and irrational is always irrational.

As none of the 5,8,24 is a perfect square , nor addition of any two results in a perfect square, so square root of their addition or subtraction or multiplication results in an irrational number.

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3 years ago

The sum of the roots of 8x^2- 2x

Andrews [41]

Answer:

1/4

Step-by-step explanation:

To find the roots of the expression, factor the expression by GCF.

$8x^2 - 2x\\2x(4x-1)$

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