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meriva
3 years ago
13

3 × 70° 45' 30" - 2 × 40° 25' 10"​

Mathematics
1 answer:
Marysya12 [62]3 years ago
8 0

Answer:

Step-by-step explanation:

3×70° 45' 10''-2×40°25'10''

=210° 135'30''-80° 50'20''

=130°85'10''

=131°25'10''

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2 years ago
Lucas' mom is eight years older than twice his age. The sum of their ages is 77. How old are Lucas and his mom?
Rudiy27

Answer:

Age of Lucas = 23 years

Age of Lucas Mom = 54 Years

Step-by-step explanation:

In this question we have to find the age of Lucas and his Mom

Let the age of Lucas be x

According to given condition

Twice of his age 2 * x =2x

Eight years older means age + 8x

So

Age of his mom = Twice of his age + 8

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now according to second condition

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Put the values in the condition above

x + (2x + 8) = 77

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subtracting 8 from both sides

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Dividing both sides by 3

x = 69 / 3

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Now from equation (i)

Age of Lucas Mom = 2(x) + 8

putting in the value we get

Age of Lucas Mom = 2 ( 23) + 8

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Age of Lucas Mom = 54 Years

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