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LiRa [457]
3 years ago
8

Please solve the equation X^2+3x+3=0

Mathematics
1 answer:
Degger [83]3 years ago
4 0
<u>x² + 3x + 3 = 0</u>

I can tell by looking that there's no easy way to factor the left side,
so we'll have to use the Quadratic formula.

Before doing that, let's just take a look at the discriminant:

( B² - 4AC ) = (9) - (4 x 3 x 1) = (9 - 12) = -3 .
The discriminant is negative, so we know that the roots will be complex conjugates.

Again:  <u>x² + 3x + 3 = 0</u>

x = (1/2) [ -3 plus or minus the square root of (-3) ]

<u>x = -3/2 + (1/2) j√3</u>
and
<u>x = - 3/2 - (1/2) j√3</u>
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Select the correct answer <br>if g=8,what is the value of the expression g/2+3 ​
Leona [35]

Answer:

7

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

g/2 + 3

g = 8

<u>Step 2: Evaluate</u>

  1. Substitute in <em>g</em>:                                                                                               8/2 + 3
  2. Divide:                                                                                                             4 + 3
  3. Add:                                                                                                                 7
3 0
3 years ago
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A rectangle has an area of 36 inches squared. Write an equation to show how the length (l) varies inversely the width (w).
Anastaziya [24]
Start with the first sentence, and the definition of the area of a rectangle:
l * w = 36

Rewrite the equation to get
l = 36 / w
or
w = 36 / l
Either one shows the inverse relationship between w and l.

Assuming the last part wants you to write an equation for an x-y graph, the equation would be
y = 36 / x
8 0
3 years ago
The form of the alternative hypothesis can be: A. neither one nor two-tailed B. two-tailed C. one or two-tailed D. one-tailed
Irina-Kira [14]

Answer:

The answer is "Option C"

Step-by-step explanation:

  • It is the hypothesis which would be opposed to just the null hypothesis, that is used in its testing.
  • In this, we generally believed that the results derive from a particular effect with some superimposed variance of chance.
  • It is nothing but an option in contrast to the null and its original test starts by considering its two hypotheses, that's why the only option C is correct.
8 0
3 years ago
Students in 7th and 8th grade were asked the types of movies they prefer. The results of the survey are shown in the two-way tab
Andreyy89

A table is a arrangement of the data or the information. For the given table statement second, third and fifth are the correct statements.

Given information-

A four by four table in given for the survey of the 7th and 8th group students for the movie preference.

The first column has no label with entries drama, action, comedy, total.

The second column is labeled 7th with entries 11%, 25%, 14%, 50%.

The third column is labeled 8th with entries 15%, 19%, 16%, 50%.

The fourth column is labeled total with entries 26%, 44%, 30%, 100%.

<h3>Table </h3>

A table is a arrangement of the data or the information

Now look at the statement.

  • 1) More 7th graders were surveyed than 8th graders- As both 7th grade and the 8th grade student surveyed are 50 percent. Thus the statement 1 is incorrect.
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  • 3) The joint relative frequency for 8th graders who like comedy movies is 16%- From the table it can be said that the frequency of the 8th grade students likes the comedy movie is 16 percent. Thus this is a correct statement.
  • 4) Most students prefer drama movies- The highest number of the movie preferred by the students is action movie. Thus this is an incorrect statement.
  • 5) Half of the 7th graders prefer action movies- The 50 percent of the 7th grade is surveyed in which 25 percent like the action movie.25 is the half of the 50. Thus it is a correct statement.

Hence for the given table statement second, third and fifth are the correct statements.

Learn more about the data representation in table here;

brainly.com/question/7727331

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3 0
4 years ago
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