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madreJ [45]
3 years ago
11

The result of subtracting two or more numbers is called

Mathematics
1 answer:
tankabanditka [31]3 years ago
3 0

Answer:

Formally, the number being subtracted is known as the subtrahend, while the number it is subtracted from is the minuend. The result is the difference.

Step-by-step explanation:

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A bucket is 20cm in diameter at the open end, 12cm in diameter at the bottom, and 16cm deep. To what depth would the bucket full
Alexus [3.1K]

The bucket has a base diameter of  12  and top opening diameter of  20 . This makes the base radius  6  and top radius  10 .

 

The bucket as shown has the bottom base of radius:

B C = 6

and the top opening of radius:

D E = 10

The depth is:

D B = 16

If we extend the lateral surface of the bucket down it will generate a cone that contains the bucket in it.

To calculate the volume of the bucket, we need to calculate the volume of the large cone with the depth of  D A , then calculate the volume of the small cone with the depth of  B A , and subtract the volume of the small cone from the volume of the large cone.

Let's let  B A = x .The two triangles  Δ A B C  and  Δ A D E are similar due to the Angle Angle theorem because they both share angle  ∠ A D E = 90 ∘  and angle  ∠ D A E .

Therefore, the ratio of their corresponding sides are equal.

B A /D A = B C /D E

x /16 + x = 6 /10

x /16 + x = 3/5

48 + 3 x = 5 x

2 x = 48

x = 24  cm

The volume of a cone is: V = 1 /3 h π r 2

The height  ( h ) , which we are calling the depth, of the small cone is  x = 24 c m  and the depth of the large cone is  x + 16 = 24 + 16 = 40 c m

V Large Cone = 1/ 3 ( 40 ) ( π ) ( 10 ) 2 = 4000 π/3 c m 3  

V Small Cone = 1 /3 ( 24 ) ( π ) ( 6 ) 2 = 288 π c m 3

V Bucket = 4000 π /3 − 288 π = 3136 π /3 c m 3

Volume of a cylinder is:

V Cylinder = π r 2 h  where  h  is the height(depth) and  r  is the radius of the base of the cylinder.

If the base of the cylinder has a diameter of  28 c m  then the radius of the base is  14 c m

( π ) ( 14 ) 2 ( h ) = 3136 π /3

196 π h = 3136 π/ 3

196 h= 3136 /3

h = 3136 /3 /196 = 3136 /588 = 5.33 c m

Let's look at the figure below:

8 0
3 years ago
The sum of 9 and the quotient of x and 7
Mama L [17]
I just had to sorry

6 0
3 years ago
Please help as soon as possible Will mark BRAINLIEST!!!!!
omeli [17]

Answer:

Width = 40ft

Step-by-step explanation:

Area of a rectangle = Length x Width

=> 1600 = 40 x W

=> 1600 = 40W

=> 1600/40 = 40W/40

=> 40 = W

So, the width is 40 ft

6 0
3 years ago
Read 2 more answers
at a conference of 250 people, 30% of the participants are french, 35% are americans, 20% are germans, and the rest are of the o
Lady bird [3.3K]
Ok...we got 250 people
30% are French, 35% are Americans, 20% are Germans....thats 85%.
This means 15% are from other countries

3 not from other countries...
0.85 * 0.85 * 0.85 = 0.6

0.6(250) = 150 students <===
5 0
3 years ago
Please solve with explanation
valkas [14]

Answer:

a

Step-by-step explanation:

5 0
3 years ago
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