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harkovskaia [24]

3 years ago

6

11. Find the value of the expression: -7 + 11 - 6 + 8 Your answer

1 answer:

Dvinal [7]3 years ago

6 0

The answer to -7 +11 -6 + 8 =6

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Mandy's square quilt measures 99 in on each edge. how many yd of trim does she need to buy to go around the entire quilt

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4x99=396in
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so there for mandy needs 11 yards of trim

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VikaD [51]

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a company donates 935 pencils to a school. the pencils are divided evenly among 9 classrooms. the rest of the pencils are given

wariber [46]

The problem deals with a division and the rest of it, that is dividing the total amount of pencils into 9 classrooms and the rest, lets express it as fraction:
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A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vert

andrezito [222]

Answer:

percentage of the total capacity is 75.6%

Step-by-step explanation:

Hello! To solve this problem we follow the following steps

1. draw the complete scheme of the problem (see attached image)

2. To solve this problem we must find the area of the circular sector using the following equation.(c in the second attached image)

$A=\frac{R^2}{2} (\alpha -sin\alpha )$

$\alpha =2arccos(\frac{d}{R})$

3. observing the attached images we replace the values in the equations and find the area of the circular sector, remember that you must transform the angle to radians

$\alpha =2arccos(\frac{5}{7})=88.83$

$A=\frac{R^2}{2} (\alpha -sin\alpha )\\A=\frac{7^2}{2} (88.83-sen88.83)*\frac{\pi rad}{180} =37.57ft^2$

4.we calculate the area of the total circle (At), then subtract the area of the circular sector (Ac) to find the area occupied by water (Aw)

$At=\frac{\pi }{4} (14ft)^2=153.93ft^2$

Aw=At-Ac=153.93-37.57=116.36ft^2

5.Finally, we calculate the percentage that represents the water in the tank by dividing the area of the water over the total area of the tank

$\frac{116.36}{153.93} *100=75.6$

percentage of the total capacity is 75.6%

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What's the radius of a circle with an area of 64 square feet

Ivenika [448]

Radius equals: 4.51

hope this helps! ♥

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