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Alenkasestr [34]
2 years ago
10

Calculate 20% of R400​

Mathematics
1 answer:
Zinaida [17]2 years ago
6 0

Answer:

<h2><u><em>80</em></u></h2>

Step-by-step explanation:

400: 100 you find 1% you multiply it by 20 and you have 20%

400 : 100 * 20 =

4 * 20 =                                    

<h2><u><em>80</em></u></h2>

                                       

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The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below:
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Answer:

Step 1: 8 + 16x Step 2: 4(4) + 4(12x) Step 3: 4(4 + 12x) Step 4: Dimensions of the rectangle are 4 and 4 + 12x In which step did the student first make an error and what is the correct step? Step 3; 4 + (4 + 12x) Step 3; 4 + (4 ⋅ 12x) Step 2; 4(2) + 4(4x) Step 2; 4(2) + 4x(2)

3 0
2 years ago
Cone A is divided into Cone B and Frustum C. B A 12cm C 20cm 20cm Express the volume of Frustum C as a fraction of the volume of
zaharov [31]

The volume of the frustum is volume of the whole cone(A) minus the smaller cone(B) which is would give the volume of frustum(C) = 256cm³

<h3>Calculation of a frustum</h3>

The volume of cone A V=πr²h/3

Where radius = 20cm

The volume of cone B = V=πr²h/3

Where radius = 12cm

Therefore volume of frustum =

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The variables will cancel out each other

V = 20² - 12²

V = 400- 144

V = 256cm³

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7 0
2 years ago
Given g(x) = :-2 +4, solve for a when g(x) = 0.
evablogger [386]

Answer:

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Step-by-step explanation:

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Ivenika [448]

Answer:

0.\overline{369} = \frac{41}{111}

Step-by-step explanation:

x = 0.369369369...

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999x = 369

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Answer: i dont know the answer

Step-by-step explanation:

i dont get it

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