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3 years ago

How do you factor x^2 - 2x - 2 = 0

Mathematics

1 answer:

Maru [420]3 years ago

5 0

Answer:

Step-by-step explanation:Step 1: Use quadratic formula with a=1, b=-2, c=-2.

−b±√b2−4ac

−(−2)±√(−2)2−4(1)(−2)

2(1)

2±√12

x=1+√3 or x=1−√3

Answer:

x=1+√3 or x=1−√3

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A number has the same digit inits hundreds place and its hundredths place. how many times greater is the value of the digit in t

lorasvet [3.4K]

Answer:100

Step-by-step explanation: i looked it up

3 0

4 years ago

4 (negative one-half x + 7) + 5 x = 15

Ronch [10]

Answer:

Step 3 is incorrect

Step-by-step explanation:

4(-1/2x + 7) + 5x = 15

-2x + 28 + 5x = 15

3x + 28 = 15

3x + 28 - 28 = 15 - 28

3x = -13

4 0

3 years ago

John is interested in purchasing a multi-office building containing five offices. The current owner provides the following proba

Elenna [48]

Answer:

Option B.

Step-by-step explanation:

The given table is:

Number of Lease Offices : 0 1 2 3 4 5

Probability : 5/18 1/4 1/9 1/18 2/9 1/12

The expected probability is

Expected probability = $\sum_{i=0}^5 x_{i}p(x_i)$

Expected probability = $0p(0)+1P(1)+2P(2)+3P(3)+4P(4)+5P(5)$

Expected probability = $0\cdot (\frac{5}{18})+1\cdot (\frac{1}{4})+2\cdot (\frac{1}{9})+3\cdot (\frac{1}{18})+4\cdot (\frac{2}{9})+5\cdot (\frac{1}{12})=\frac{35}{18}$

It is given that the yearly lease = $12,000.

The yearly leases for the whole building in a given year is

Yearly leases = $\frac{35}{18}\times 12000=23333.3333333\approx 23333.33$

Therefore, the correct option is B.

3 0

3 years ago

4 1/9 - 3 3/5 what is the answer to this question ?

Sindrei [870]

The answer is 0.51111111111111111 (It goes on for infinity).

8 0

3 years ago

5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4)?

MaRussiya [10]

Answer:

x > -2.5

Step-by-step explanation:

1) 5.1 (3 + 2.2x) > -14.25 - 6 (1.7x + 4)

2) 15.3 + 11.22x > -14.25 - 10.2x - 24

3) 15.3 + 11.22x > -38.25 - 10.2x

4) 11.22x + 10.2x > -38.25 - 15.3

5) 21.42x > -53.55

6) x > -2.5

Alternate forms

x > -5/2x or x > -2 1/2

5 0

3 years ago