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Mathematics

1 answer:

Nataly [62]2 years ago

3 0

Answer:

they choose candidates before the general election

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Which ratio represents 18:27 in simplest form?

inn [45]

D. 2:3..
Ratios are basically fractions. Find a number that both numbers in the ration can divide into. In this case, it's 3. 18/3 is 6 and 27/3 is 9. but you're still not done, because 6/3 is 2 and 9/3 is 3

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3 years ago

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Question 18 Item 18 The distribution of the number of moths captured per night by a certain moth trap is approximately normal wi

juin [17]

Answer:

Standard deviation 46.3

Step-by-step explanation:

A 28% of the distribution is equivalent to a z score of -0.5828, you can use a z table to find that.

Z score is calculated as follows:

$z = \frac{x-\mu}{\sigma}$

x is the number being evaluated

μ is the mean

σ is the standard deviation

And it is used to calculate how many standard deviations you are from the mean of the sample.

Replacing with the known information you can calculate the standard deviation:

$\sigma=\frac{x-\mu}{z} =\frac{76-103}{-0.5828}= 46.3$

4 0

4 years ago

The cost price of a car is $60 000. If the marked price is set so as to make a profit of 15%, find the

blsea [12.9K]

Answer:

marked price = $69,000

Step-by-step explanation:

cost price = $60,000

profit

= 15%

= 15% × cost price

= 15/100 × $60,000

= $9000

marked price

= cost price + profit

= $60,000 + $9000

= $69,000

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3 years ago

What is the sum? -1.5 + 1.9

Talja [164]

Answer: 0.4

Step-by-step explanation:

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3 years ago

Joey "Goodfella" Branzolli liked to shuffle music as a disk jockey. He had 80 CDs, which were rock and rap CDs. He bought his CD

AveGali [126]

Answer: there has to be 52 rock (4 each) which equals to 208, and 28 rap (3 each) which equals to 84, and 84 + 208 = $292

Step-by-step explanation:

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4 years ago