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Westkost [7]
3 years ago
8

Simplify (x - square root 7)^2

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

x^2 + -2 sqrt(7) x + 7

Step-by-step explanation:

Expand the following:

(x - sqrt(7))^2

(x - sqrt(7)) (x - sqrt(7)) = (x) (x) + (x) (-sqrt(7)) + (-sqrt(7)) (x) + (-sqrt(7)) (-sqrt(7)):

x x - sqrt(7) x - sqrt(7) x - (-sqrt(7) sqrt(7))

(-1)^2 = 1:

x x - sqrt(7) x - sqrt(7) x + (sqrt(7))^2

x x = x^2:

x^2 - sqrt(7) x - sqrt(7) x + sqrt(7)^2

Cancel exponents. (sqrt(7))^2 = 7:

x^2 - sqrt(7) x - sqrt(7) x + 7

Combining like terms, sqrt(7) x (-1) + sqrt(7) x (-1) = -2 sqrt(7) x:

Answer:  x^2 + -2 sqrt(7) x + 7

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Sixty seven percent of the employees in a company have managerial positions, and 58 percent of the employees in the company have
Kazeer [188]

Answer: The proportion of employees who either have MBAs or are managers are 0.58.

Step-by-step explanation:

Since we have given that

Probability of employees having managerial positions = 67%

Probability of employees having MBA degrees = 58%

Probability of managers having MBA degrees = 67%

So, using probability formulas, we get that

P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\P(A\cup B)=0.67+0.58-0.67\\\\P(A\cup B)=0.58

Hence, the proportion of employees who either have MBAs or are managers are 0.58.

7 0
3 years ago
You drop a ball from a height of 98 feet. At the same time, your friend throws a ball upward. The polynomials represent the heig
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Step-by-step explanation:

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3 years ago
11 relaxing after work. the 2010 general social survey asked the question: "after an average work day, about how many hours do y
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2 years ago
Please Help!!! 25 points!
julia-pushkina [17]

Answer: B/E

Step-by-step explanation:

Because the reciprocal are congruent to both sides

3 0
3 years ago
Read 2 more answers
What is 3 5/7 divided by 2
satela [25.4K]

Use copy dot flip to solve.

= 3 5/7 / 2/1

= 26/7 * 1/2 (Turned into improper fraction)

= 26/14 (Improper Fraction Answer)

= 1 12/14 (Mixed Number Answer Simplified)

= 1 6/7 (Final Answer Simplified)

Hope This Helped! Good Luck!

7 0
3 years ago
Read 2 more answers
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