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marusya05 [52]
3 years ago
7

655% of what number is 26,200?

Mathematics
2 answers:
andrezito [222]3 years ago
5 0

Answer:

The number is 4000

Step-by-step explanation:

Let the number be 'a'

655% of a  = 26,200

\frac{655}{100}*a=26200\\\\a=26200*\frac{100}{655}\\\\a=4000

sukhopar [10]3 years ago
3 0

Answer:4000

Step-by-step explanation:

Let them number be a

655% of a=26200

655/100 x a=26200

655a/100=26200

Cross multiplying we get

655a=26200x100

655a=2620000

Divide both sides by 655

655a/655 = 2620000/655

a=4000

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In his first year, a math teacher earned $32,000. Each successive year, he
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Answer:

Step-by-step explanation:

Each successive year, he

earned a 5% raise. It means that the salary is increasing in geometric progression. The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence(amount earned in the first year).

r represents the common ratio.

n represents the number of terms(years).

From the information given,

a = $32,000

r = 1 + 5/100 = 1.05

n = 20 years

The amount earned in his 20th year, T20 is

T20 = 32000 × 1.05^(20 - 1)

T20 = 32000 × 1.05^(19)

T20 = $80862.4

To determine the his total

earnings over the 20-year period, we would apply the formula for determining the sum of n terms, Sn of a geometric sequence which is expressed as

Sn = (ar^n - 1)/(r - 1)

Therefore, the sum of the first 20 terms, S20 is

S20 = (32000 × 1.05^(20) - 1)/1.05 - 1

S20 = (32000 × 1.653)/0.05

S20 = $1057920

3 0
3 years ago
A survey found that 8 out of 10 parents approved of the new principal’s performance. If 4 parents name are chosen with replaceme
Natasha2012 [34]

Answer:

The probability is 0.044

Step-by-step explanation:

Step-by-step explanation:

Let p be the probability that the new principal’s performance is approved.

This is obtainable from the survey and it is 8/10 = 0.8

Let q be the probability that the new principal’s performance is disproved.

That will be;

1 - q = 1- 0.8 = 0.2

To calculate the probability that 14 parents names are chosen at random and they all

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That will be;

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Answer:

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<em>Trust.</em>

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Write three expressions that are the equivalent of 5of 100, 000 , first as a numberthen in wordsfinally in scientific notation
disa [49]

Answer: 1) 500, 000

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Step-by-step explanation:

To express: 5 of 100, 000 in three expressions (First - number. second - word , third - scientific )

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In scientific notation, 500, 000=5\times10^5

Hence, the required expressions:

1) 500, 000

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3) 5\times10^5

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3 years ago
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