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djyliett [7]
3 years ago
10

4)) Solve for r. 10' = 1,000 r=

Mathematics
1 answer:
Bumek [7]3 years ago
7 0
10 times 100 is 1000
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If 9th term ofap is 99 and 99th term is 9 which term is zero<br>]​
Viktor [21]

Answer:

108 th term is zero

Step-by-step explanation:

The nth term of an AP is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₉ = 99 and a₉₉ = 9 then

a₁ + 8d = 99 → (1)

a₁ + 98d = 9 → (2)

Subtract (1) from (2) term by term to eliminate a₁

0 + 90d = - 90

90d = - 90 ( divide both sides by 90 )

d = - 1

Substitute d = - 1 into (1) for value of a₁

a₁ + 8(- 1) = 99

a₁ - 8 = 99 ( add 8 to both sides )

a₁ = 107

Then

107 - (n - 1) = 0

107 - n + 1 = 0

- n + 108 = 0 ( subtract 108 from both sides )

- n = - 108 ( multiply both sides by - 1 )

n = 108

The 108th term is zero

3 0
3 years ago
Solve log x = 4. (2 points)
Ludmilka [50]

Answer:

0.60205991

Step-by-step explanation:

type in log 4 in calculator

5 0
4 years ago
What's the answer please help me!
Andreas93 [3]

Answer:

0.62

Step-by-step explanation:

10 to the 3rd power is 1,000. Since 1,000 is greater than 620, it would become a decimal. Move the decimal behind 620 3 places. It would become:

1st move: 620 -> 62.0

2nd move: 62.0 -> 6.20

3rd move: 6.20 -> 0.62

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2 years ago
What is 2(x+10)=60 please help
Airida [17]

Step-by-step explanation:

2(x+10)=60

x+10=60/2

x=30-10=20

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3 years ago
A fireperson needs to use a ladder of 25 feet in length to rescue a cat that has become
svp [43]

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A, because the cat is only 15 feet in the air and the TREE is 50 feet

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2 years ago
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