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igor_vitrenko [27]
3 years ago
13

What is 7/9 - 5/18 lowest common denominator

Mathematics
2 answers:
NISA [10]3 years ago
6 0
7/9 = 14/18
14-5=9
9/18=1/2
Paladinen [302]3 years ago
6 0
The LCD is 18
9=3×3
18=2×3×3
no need for repeats for instance since ×3 is in both you would only use it once
so 2×3×3=18
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3 years ago
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Mashutka [201]

Answer:

7/5 * A *y =k

Step-by-step explanation:

A=5k/7y

Multiply each side by 7y

A* 7y = 5k/7y * 7y

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Divide by 5

7Ay/5 = 5k/5

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3 years ago
If 2k, 5k-1 and 6k+2 are the first 3 terms of an arithmetic sequence, find k and the 8th term​
Klio2033 [76]

Answer:

see explanation

Step-by-step explanation:

The common difference d of an arithmetic sequence is

d = a_{2} - a_{1} = a_{3} - a_{2}

Substitute in values and solve for k, that is

5k - 1 - 2k = 6k + 2 - (5k - 1)

3k - 1 = 6k + 2 - 5k + 1

3k - 1 = k + 3 ( subtract k from both sides )

2k - 1 = 3 ( add 1 to both sides )

2k = 4 ⇒ k = 2

--------------------------------------------------------

The n th term of an arithmetic sequence is

a_{n} = a_{1} + (n - 1)d

a_{1} = 2k = 2 × 2 = 4 and

d = 5k - 1 - 2k = 3k - 1 = (3 × 2) - 1 = 5

Hence

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4 0
3 years ago
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Molodets [167]

Answer:

35

Step-by-step explanation:

6 x 5 = 30

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6 0
3 years ago
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MA_775_DIABLO [31]

Answer:

1.58

Step-by-step explanation:

15.8 x 0.1= 1.58

7 0
3 years ago
Read 2 more answers
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