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yaroslaw [1]
3 years ago
8

If x, 2, x+2, 6 are in proportion ,find the value of x​

Mathematics
2 answers:
jonny [76]3 years ago
5 0

Answer:

Answer is 6 the value of x is 6

Masteriza [31]3 years ago
5 0

Answer:

x = 1

Step-by-step explanation:

If x and 2 are in proportion and x+2 and 6 are in proportion, we can make them equal. We can do that by doing:

\frac{x}{2} = \frac{x+2}{6}

After cross-multiplying, we get 2x+4 = 6x.

Subtract 2x on both sides and we get 4 = 4x

divide 4 on both sides and we get x = 1

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Answer:

3142.86 cubic cm

Step-by-step explanation:

volume of cone is given by formula

volume of cone = 1/3(area of base*height)

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6 0
3 years ago
Please show work and solve it! 100 points! n(n-7)=0
Dmitriy789 [7]
Step by step. :)


STEP
1
:
Equation at the end of step 1
0 - 7n • (n - 7) = 0
STEP
2
:
Equation at the end of step 2
-7n • (n - 7) = 0
STEP
3
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Theory - Roots of a product
 3.1    A product of several terms equals zero. 

 When a product of two or more terms equals zero, then at least one of the terms must be zero. 

 We shall now solve each term = 0 separately 

 In other words, we are going to solve as many equations as there are terms in the product 

 Any solution of term = 0 solves product = 0 as well.
Solving a Single Variable Equation:
 3.2      Solve  :    -7n = 0 

 Multiply both sides of the equation by (-1) :  7n = 0


Divide both sides of the equation by 7:
                     n = 0
Solving a Single Variable Equation:
 3.3      Solve  :    n-7 = 0 

 Add  7  to both sides of the equation : 
                      n = 7



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