Answer:

Option (C) is correct .
Step-by-step explanation:
As the expression given in the question as follows.

Now rationalize the expression.

Using the formula
a² - b² = (a - b) (a + b)
Using in the above


As i² = -1



Option (C) is correct .
Answer:
Step-by-step explanation:
Both expression are the same :
14 = 2(x + 3)
By expansion :
14 = 2*x + 2*3
14 = 2x + 6
Hence ;
Both expression are the same
Weight of one circle :
Final weight on both sides are equal:
Weight on Left hand side = 14
Weight on right hand side = 3*x + 3*x
Weight on Left hand side = Weight on right hand side
14 = 3x + 3x
14 = 6x
x = 14 / 6
x = 2.333
Correct Answer:
6 feet
Explanation:
6 feet = 12 x 6 = 72 inches
72 inches > 70 inches
Hence, 6 feet is greater than 70 inches.
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7x + 5 = 2x - 35
=> 7x - 2x = - 35 - 5
=> x( 7 - 2 ) = - ( 35 + 5 )
=> x( 5 ) = - ( 40 )
=> x × 5 = - 40

x = 5
Therefore the value of x in the given equation 5
Answer:
17k - 25
Step-by-step explanation:
Equation at the end of step 1 :
(0 - (5 • (1 - 5k))) - 4 • (2k + 5)
Equation at the end of step 2 :
(0 - 5 • (1 - 5k)) - 4 • (2k + 5)
Final result :
<u><em> 17k - 25</em></u>
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