Answer:
7x2-1 = 0
Step-by-step explanation:
Add 1 to both sides of the equation :
7x2 = 1
Divide both sides of the equation by 7:
x2 = 1/7 = 0.143
When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:
x = ± √ 1/7
Answer:
400%.
Step-by-step explanation:
The surface area of a 4 cm cube = 6 * 4^2
= 96 cm^2.
The number of 1 cm cubes that can be cut from the larger cube is :
16 * 4 = 64.
The surface area of each of these smaller cubes is 6*1 = 6 cm^2.
The increase in surface area is a factor of (6*64) / 96
= 4 = 400%.
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Question
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x² - 49
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Form into 2 perfect squares
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x² - 7²
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Formula
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a² - b² = (a + b) (a - b)
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Apply the formula
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x² - 7² = (x + 7)(x - 7)
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Answer: (x + 7)(x - 7)
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Solution
For this case we need to find which function is linear
By definition a linear function is given by:
y= m1 x1+ m2 x2+ ..... +b
And for this case we can see that option b satisfy this
y= b
So then the answer is:
b