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3 years ago

Elenas bedroom door is 0.8m wide. How wide should the door be on the scale drawing

Mathematics

1 answer:

agasfer [191]3 years ago

5 0

Answer:

Answer:

The door should be 1.6cm wide on the drawing.

Step-by-step explanation:

1 meter is 100 centimeters.

Elena's bedroom door is 80 centimeters wide.

To find how wide it should be on the drawing, divide by 50.

80/50 = 1.6cm

The door should be 1.6cm wide on the drawing.

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A 1,000 mL solution of acetic acid contains 26 mL of pure acetic acid. Find the percent concentration of this solution.

Mrac [35]

Given:

Total solution : 1000mL

Pure acetic acid = 26mL

To find:

The percent concentration of given solution.

Solution:

We know that,

$\text{Percent concentration}=\dfrac{\text{Pure acetic acid}}{\text{Total solution}}\times 100$

Putting the given values, we get

$\text{Percent concentration}=\dfrac{26}{1000}\times 100$

$\text{Percent concentration}=\dfrac{26}{10}$

$\text{Percent concentration}=2.6$

Therefore, the percent concentration of this solution is 2.6%.

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2 years ago

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Orlov [11]

Answer:

4 1/2

Step-by-step explanation:

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1 year ago

Last year Rikki sang 960 songs with his rock band. How many songs did he sing per month? How did you get your answer?

alexira [117]

If he sang the same number of songs each month, he sang 80 songs per month.

960/12 (months) = 80 (songs per month)

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2 years ago

A rectangular classroom has an area of 300 square feet. The length of the classroom is 5 feet longer than the width, w. Create a

weqwewe [10]

Answer:

w^2 + 5w = 300

Step-by-step explanation:

A= length x width

A =300

Width = w

length = w + 5

Therefore

300 = (w) x (w + 5)

300 = w^2 + 5w

w^2 + 5w = 300

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2 years ago

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madam [21]

Answer:

The volume of this cylinder is 9184.5 cubic feet.

Step-by-step explanation:

The area of a circle is $\pi r^2$ and the volume of a cylinder with that base is just that area times the height:

$V=\pi r^2\times h$

Here, we're given the diameter, but we need the radius. The radius of a circle is just half of the diameter:

$r=30\times0.5=15$

Next, you can use that radius to calculate the area of the base:

$A=3.14\times15^2\\A=3.14\times225\\A=706.5$

Finally, multiply that by the height to find the volume of the cylinder:

$V=706.5\times13\\V=9184.5$

The volume of this cylinder is 9184.5 cubic feet.

7 0

2 years ago