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kipiarov [429]
3 years ago
5

Help plzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
4 0

Answer:

20??? wow I feel stupid I forgot how to do everything

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How many roots does the equation 3x² = 1 - 7x have and what is the nature of the roots
AnnyKZ [126]

Answer:

Step-by-step explanation:

Rewrite this quadratic in standard form:  3x^2 + 7x - 1.

The coefficients of x are {3, 7, -1}, and so the discriminant is b^2 - 4ac, or

7^2 - 4(3)(-1), or 49 + 12, or 61.  Because the discriminant is positive, this quadratic has two real, unequal roots

7 0
3 years ago
Is 705.003 greater than seven hundred three and five hundreths
ioda
14142+2562=u is the awnser
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3 years ago
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The following data were given in a study of a group of 1000 subscribers to a certain magazine. In reference to job, marital stat
kozerog [31]

Answer:

(a)  P(M\ or\ P\ or\ C) = 1.307

(b) See Explanation

Step-by-step explanation:

Given

P = 312 ---- Professionals,

M = 470 ----- Married persons,

C = 525 ---- College graduates,

PCG = 42  ----- Professional college graduates,

MCG = 147 ----- Married college graduates,

MP = 86  ---- Married professionals,

MPCG = 25 ---- Married professional college graduates

Total =1000

Solving (a): P(M or P or C)

This is calculated as:

P(M\ or\ P\ or\ C) = P(M) + P(P) + P(C)

P(M\ or\ P\ or\ C) = \frac{n(M) + n(P) + n(C)}{Total}

P(M\ or\ P\ or\ C) = \frac{470 + 525 + 312}{1000}

P(M\ or\ P\ or\ C) = \frac{1307}{1000}

P(M\ or\ P\ or\ C) = 1.307

(b) In probabilities, the probability of an event or collection of events must not exceed 1 and must not go below 0.

In (a) above, the calculated probability exceeds 1.

Because of this single reason, the collected data is incorrect

4 0
3 years ago
Enter the value for x that makes the equation 1/2(4x-8)+3x=36 true
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Answer:

the correct answer for x is 8

Step-by-step explanation:

since:     1/2 ((4) (8) - 8) + (3) (8) = 36

4 0
3 years ago
When a figure is translated on a coordinate grid, what conclusion can you draw from the pre-image and image? (4 points)
gavmur [86]

A translation changes the position of the original image and all side lengths remain the same.

4 0
3 years ago
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