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mylen [45]
3 years ago
9

The larger of two consecutive odd integers is three times the smaller. What is their sum?

Mathematics
1 answer:
Darya [45]3 years ago
4 0
X=y+2
x=3y
2x=4y+2
4y+2=2(y+2)
4y+2=2y+4
2y+2=4
2y=2
y=1
x=3
1+3=4

Their sum is 4

Hope this helps :)
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Best estimate for 61/7
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3 years ago
A father is 32 years older than his son. In four years,
sergiy2304 [10]

Answer:

  • father: 36
  • son: 4

Step-by-step explanation:

Let s represent the son's age now. Then s+32 is the father's age. In 4 years, we have ...

  5(s+4) = (s+32)+4

  5s +20 = s +36 . . . . . eliminate parentheses

  4s = 16 . . . . . . . . . . . . subtract s+20

  s = 4

The son is now 4 years old; the father, 36.

_____

<em>Alternate solution</em>

In 4 years, the ratio of ages is ...

  father : son = 5 : 1

The difference of their ages at that time is 5-1 = 4 "ratio units". Since the difference in ages is 32 years, each ratio unit must stand for 32/4 = 8 years. That is, the future age ratio is ...

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So, now (4 years earlier), the ages must be ...

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5 0
3 years ago
20 km is how many dam
ZanzabumX [31]
Hello!

OK, so we need to find out 20 km = ? dam

What we know:
1 km = 100 dam

Now, lets multiply to get our answer:

20 × 100 = 2,000

This tells us that 20 km = 2,000 dam

Check:

2,000 ÷ 20 = 10

This tells us that we are CORRECT!

Answer: 20 km = 2,000 dam

Hope this helps! Good luck! (:
3 0
3 years ago
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3 x 10^1 in standard notation is equal to 30
4 0
3 years ago
Read 2 more answers
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