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3 years ago

8

I need help with these

Computers and Technology

1 answer:

solmaris [256]3 years ago

7 0

Answer:

Choose internet is the right answer

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Please solve the ones you can. Solving Both will be appreciated. thank you

Softa [21]

Answer:a=b+c=2ca

Im not sure about this answer

Explanation:

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3 years ago

The impact of the destruction of train station on the budget of the minister of finance

zhuklara [117]

The impact of the destruction of train station on the budget of the minister of finance is said to be very huge.

<h3>How do railways destruction affect the economy?</h3>

When there is railroads destruction, a lot of money such as billions of dollars is been spent to repair the damages and this will be of a great concern to the minister of finance.

Most countries is run by Budget and when sudden things like this happen, the Minister have to look for other ways to source for funds and this will affect other parts or items on the budget of the Minister.

Learn more about minister of finance from

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2 years ago

Draw a flowchart to find the average grade in 3 subjects

mezya [45]

Answer:

See attachment for flowchart

Explanation:

The flowchart is as follows:

Step1: Start

This begins the flowchart

Step 2: Input Score1, Score2, Score3

This gets user input for the three subjects

Step 3: Average = (Score1 + Score2 + Score3)/3

This calculates the average of the three subjects

Step 4: Print Average

This displays the calculated average

Step 5: Stop

This signals the end of the flowchart

4 0

3 years ago

In Modern operating system, the __ feature has dramatically improved user productivity.

icang [17]

Multitasking, it allows you to do more than one thing at once.

3 0

3 years ago

the volume of two similar solids are 1080cm and 1715cm .if the curved surface area of the smaller cone is 840cm .fond the curved

gavmur [86]

Answer:

$A_{big} = 1143.33cm^2$

Explanation:

The given parameters are:

$V_{small} = 1080$

$V_{big} = 1715$

$C_{small} = 840$

Required

Determine the curved surface area of the big cone

The volume of a cone is:

$V = \frac{1}{3}\pi r^2h$

For the big cone:

$V_{big} = \frac{1}{3}\pi R^2H$

Where

R = radius of the big cone and H = height of the big cone

For the small cone:

$V_{small} = \frac{1}{3}\pi r^2h$

Where

r = radius of the small cone and H = height of the small cone

Because both cones are similar, then:

$\frac{H}{h} = \frac{R}{r}$

and

$\frac{V_{big}}{V_{small}} = \frac{\frac{1}{3}\pi R^2H}{\frac{1}{3}\pi r^2h}$

$\frac{V_{big}}{V_{small}} = \frac{R^2H}{r^2h}$

Substitute values for Vbig and Vsmall

$\frac{1715}{1080} = \frac{R^2H}{r^2h}$

Recall that: $\frac{H}{h} = \frac{R}{r}$

So, we have:

$\frac{1715}{1080} = \frac{R^2*R}{r^2*r}$

$\frac{1715}{1080} = \frac{R^3}{r^3}$

Take cube roots of both sides

$\sqrt[3]{\frac{1715}{1080}} = \frac{R}{r}$

Factorize

$\sqrt[3]{\frac{343*5}{216*5}} = \frac{R}{r}$

$\sqrt[3]{\frac{343}{216}} = \frac{R}{r}$

$\frac{7}{6} = \frac{R}{r}$

The curved surface area is calculated as:

$Area = \pi rl$

Where

$l = slant\ height$

For the big cone:

$A_{big} = \pi RL$

For the small cone

$A_{small} = \pi rl$

Because both cones are similar, then:

$\frac{L}{l} = \frac{R}{r}$

and

$\frac{A_{big}}{A_{small}} = \frac{\pi RL}{\pi rl}$

$\frac{A_{big}}{A_{small}} = \frac{RL}{rl}$

This gives:

$\frac{A_{big}}{A_{small}} = \frac{R}{r} * \frac{L}{l}$

Recall that:

$\frac{L}{l} = \frac{R}{r}$

So, we have:

$\frac{A_{big}}{A_{small}} = \frac{R}{r} * \frac{R}{r}$

$\frac{A_{big}}{A_{small}} = (\frac{R}{r})^2$

Make $A_{big}$ the subject

$A_{big} = (\frac{R}{r})^2 * A_{small}$

Substitute values for $\frac{R}{r}$ and $A_{small}$

$A_{big} = (\frac{7}{6})^2 * 840$

$A_{big} = \frac{49}{36} * 840$

$A_{big} = \frac{49* 840}{36}$

$A_{big} = 1143.33cm^2$

<em>Hence, the curved surface area of the big cone is 1143.33cm^2</em>

4 0

3 years ago