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3 years ago

Translate and solve using proportions: What number is 30% of 60

Mathematics

2 answers:

balandron [24]3 years ago

3 0

Answer: 18

Step-by-step explanation:

The question is asked to know 30% of 60, we get

60 x 30% = 60 x 0.3 = 18

Pepsi [2]3 years ago

3 0

Answer:

Step-by-step explanation:

We know that 30% means 30/100

30/100 multiplied by 60

hence, the answer is 18

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Brian invests £1800 into his bank account.

SVEN [57.7K]

Step-by-step explanation:

$\underline{ \underline{ \text{Given}}} :$

Principal ( P ) = £ 1800
Rate ( R ) = 5%
Time ( T ) = 3 years

$\underline{ \underline{ \text{To \: find}}} :$

Total amount

$\underline{ \underline{ \text{Solution}}}:$

First , finding the amount of interest :

$\boxed{ \sf{Interest = \frac{PTR}{100}}}$

⇢ $\sf{Interest = \frac{1800 \times 5 \times 3}{100}}$

⇢ $\sf{Interest = \frac{27000}{100}}$

⇢ $\sf{Interest = £ 270}$

Now , Finding the total amount :

$\boxed {\sf{Total \: amount = Principal + Interest}}$

⇢ $\sf{Total \: amount = 1800 + 270}$

⇢ $\sf{Total \: amount = \: £ 2070}$

$\red{\boxed{ \boxed{ \tt{Our \: final \: answer : brian \: will \: have £ 2070 \: after \: 3 \: year.}}}}$

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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6 0

3 years ago

Assume the population has a distribution with a mean of 110 and a standard deviation of 8. For a random sample of size 40, find

VARVARA [1.3K]

Answer:

109.33

Step-by-step explanation:

given that the population has a distribution with a mean of 110 and a standard deviation of 8

Sample size n = 40

Std error of sample mean = std dev/square root of sample size

= $\frac{8}{\sqrt{40} } \\=1.265$

From std normal distribution table we find that 30th percentile for Z is

-0.5244

Corresponding x score = $110-0.5244*1.265=109.33663$

30th percentile = 109.33663

=109.33

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Answer:

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