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erastova [34]
3 years ago
14

PLZ HELP CLICK THE PICTURE

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
4 0

Answer:

1: 1 & 5

2: 4 & 5

3: 6 & 8

4: 2 & 4

have a nice day :)

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Question 1 options:
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Answer:

4000 m^{3}

Step-by-step explanation:

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V = 1/3(400)(30) = 4000 m^{3}

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What is the value of k in the equation k\3 -5=34
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Read 2 more answers
The height of a triangle is 8 m more than the length of the base. The area of the triangle is 21 m^2. Find the height of the tri
Alexus [3.1K]

Answer:

<h2>height = 12 cm</h2>

Step-by-step explanation:

Area of a triangle is given by

A =  \frac{1}{2} bh

where

b is the base

h is the height

From the question

Area = 21 m²

The statement

The height of a triangle is 8 m more than the length of the base is written as

h = 8 + b

Make b the subject

That's

b = h - 8

Substitute the expression into the above formula and solve for the height

That's

21 =  \frac{1}{2} (h - 8)h

Multiply through by 2

h² - 8h = 48

h² - 8h - 48 = 0

(h + 4)(h - 12) = 0

h + 4 = 0 h - 12 = 0

h = - 4 h = 12

Since the height cannot be a negative number we have the final answer as

<h3>height = 12 cm</h3>

Hope this helps you

3 0
3 years ago
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icang [17]
3.45 is the right answer
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