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3 years ago

12

One computer has a mass of 0.8 kilogram and another has a mass of 800 grams. Compare the masses of the computers. Use >, <

, or = to make a true statement.

1 answer:

Maslowich3 years ago

7 0

The two masses are equal, since 0.8 Kg = 800 g

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You need to arrange sevenseven of your favorite books along a small shelf. How many different ways can you arrange the books, a

Rashid [163]

<span>The second is: You need to arrange nine of your. ... The second is: You need to arrange nine ofyour favorite books along a small shelf. Applying the fundamental of counting principle, How many different ways can you arrange the books, assuming that the order of the books makes a difference to you.</span><span>
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3 years ago

8 1/2 x 2 3/4 x 2/3= 12

Aloiza [94]

Answer:

155.25= 12

Step-by-step explanation:

17/2*2*1/2 = 12

17*1/2 = 12

8 1/2 17/1* 1/2

8*2+1 17*1/1*2

2 17*1/1*2

16+1 17/1*2

2 17/2

17 8.5=12

2

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3 years ago

Tyrone is the supervisor at a water park. His annual salary is $34540. What is his monthly salary?

icang [17]

Answer:

the answer I got was 2878.3

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3 years ago

Arm Span(x) Height(y)

natita [175]

Answer:

Here's what I get.

Step-by-step explanation:

1. Representation of data

I used Excel to create a scatterplot of the data, draw the line of best fit, and print the regression equation.

2. Line of best fit

(a) Variables

I chose arm span as the dependent variable (y-axis) and height as the independent variable (x-axis).

It seems to me that arm span depends on your height rather than the other way around.

(b) Regression equation

The calculation is easy but tedious, so I asked Excel to do it.

For the equation y = ax + b, the formulas are

$a = \dfrac{\sum y \sum x^{2} - \sum x \sumxy}{n\sum x^{2}- \left (\sum x\right )^{2}}\\\\b = \dfrac{n\sumx y - \sum x \sumxy}{n\sum x^{2}- \left (\sum x\right )^{2}}$

This gave the regression equation:

y = 1.0595x - 4.1524

(c) Interpretation

The line shows how arm span depends on height.

The slope of the line says that arm span increases about 6 % faster than height.

The y-intercept is -4. If your height is zero, your arm length is -4 in (both are impossible).

(d) Residuals

$\begin{array}{cccr}&\textbf{Arm Span} & \textbf{Arm Span}&\\\textbf{Height/in} &\textbf{Actual} & \textbf{Predicted}&\textbf{Residual}\\25 & 19 & 22.3 & -3.3\\40 & 41 & 38.2 & 2.8\\55 & 51 & 54.1 & -3.1\\65 & 67 & 62.6 & 4.4\\ \end{array}$

The residuals appear to be evenly distributed above and below the predicted values.

A graph of all the residuals confirms this observation.

The equation usually predicts arm span to within 4 in.

(e) Predictions

(i) Height of person with 66 in arm span

$\begin{array}{rcl}y& = & 1.0595x - 4.1524\\66 & = & 1.0595x - 4.1524\\70.1524 & = & 1.0595x\\x & = & \dfrac{70.1524}{1.0595}\\\\& = & \textbf{66 in}\\\end{array}\\\text{A person with an arm span of 66 in should have a height of about $\large \boxed{\textbf{66 in}}$}$

(ii) Arm span of 74 in tall person

$\begin{array}{rcl}y& = & 1.0595x - 4.1524\\& = & 1.0595\times74 - 4.1524\\& = & 78.4030 - 4.1524\\& = & \textbf{74 in}\\\end{array}\\\text{ A person who is 74 in tall should have an arm span of $\large \boxed{\textbf{74 in}}$}$

6 0

3 years ago

Which of the following is the correct way to write seventy million as a numeral? 7000,0000 70,00,00,00 700,00000 70,000,000

Serhud [2]

I would say 7,000,000,000,000,000,000,00,00,,0000,00

4 0

3 years ago

Read 2 more answers