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Serhud [2]
3 years ago
7

A 100g ball is placed into a graduated cylinder before the ball was placed inside the water was at 50ml but the ball is 105ml af

ter the ball is placed what is the density of the ball
Mathematics
1 answer:
Sav [38]3 years ago
5 0

Answer:

The answer to your question is: density = 1.82 g/ml

Step-by-step explanation:

Data

mass = 100 g

Volume = 105 ml - 50 ml

             = 55 ml

density = ?

Formula

            density = mass / volume

Process

            density = 100 / 55

            density = 1.82 g/ml

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Select three ratios that are equivalent to 4:3 <br><br> Choose 3 correct answers
gregori [183]

Answer:

8:6 & 12:9 & 16:12

Step-by-step explanation:

hope this help ☆

7 0
3 years ago
Latoya has bought 30 pounds of dog food. She feeds her dog pounds for each meal. For how many meals will the food last?
svetlana [45]
Saying as there are 3 meals a day and there is 30 pounds of food and she feeds 1 pound a meal, the answer should be 30 meals
8 0
3 years ago
Determine whether the equation represents a direct variation 2y=5x+1
olga nikolaevna [1]
<span>2y/2=5x+1/2
y=5x/2+1/2
no it's not a direct variation because of 1/2</span>
8 0
3 years ago
The formula for volume of a prism is V = Bh.
Misha Larkins [42]

Hello, 3Coli here!

Here is the answer to your question:

The variable B stands for the area of the base.

In this prism, B equals 38.5 in.^2

The variable H stands for height.

In this prism, h is 9 in.

The volume of the prism is 346.5 in.^3

Hopefully, this helps! :D

Good luck with your assignment.

8 0
3 years ago
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for t
rjkz [21]

Answer:

COV (all stocks) = 0.55

COV (stocks and bonds) = 0.82

Step-by-step explanation:

Coefficient of Variation is used to measure variability.

It is defined as the ration of standard deviation and the mean.

It can be used to compare variability of two population or two samples.

Formula:

\text{Coefficient of Variation} = \displaystyle\frac{\text{Standard Deviation}}{\text{Mean}}

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}

where x_i are data points, \bar{x} is the mean and n is the number of observations.

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

x: 14, 0, 39, 25, 32, 27, 28, 14, 14, 15

Mean = \frac{208}{10} = 20.8

Standard~Deviation = \sqrt{\frac{1169.6}{9} } = 11.39

Coefficient~of~Variation = \frac{11.39}{20.8} = 0.55

y = 6, 2, 29, 17, 26, 17, 17, 2, 3, 5

Mean = \frac{124}{10} = 12.4

Standard~Deviation = \sqrt{\frac{924.4}{9} } = 10.13

Coefficient~of~Variation = \frac{10.13}{12.4} = 0.82%

Since coefficient of variation of x is less compared to y, thus it could be said bonds does not reduce overall risk of an investment portfolio.

6 0
3 years ago
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