1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hammer [34]
2 years ago
11

Please help! -3n+147=0

Mathematics
1 answer:
horrorfan [7]2 years ago
6 0

Answer:

n = ±7

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving quadratics

Step-by-step explanation:

<u>Step 1: Define equation</u>

-3n² + 147 = 0

<u>Step 2: Solve for </u><em><u>n</u></em>

  1. Subtract 147 on both sides:                    -3n² = -147
  2. Divide -3 on both sides:                          n² = 49
  3. Square root both sides:                           n = ±7
You might be interested in
Which function in Excel is used to perform a test of independence? a. T.TEST b. CHISQ.TEST c. NORM.S.DIST d. Z.TEST
denis23 [38]

Answer:

b. CHISQ.TEST

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

The statistic is given by:

\chi^2 = \sum_{i=1}^n \frac{(O_i-E_i)^2}{E_i}

In order to calculate the p value we need to have in count the degrees of freedom , on this case df=(rows-1)(#cols-1). And we can calculate the p value would be given by:

p_v =P(\chi^2 >\chi^2_{calc})

But the correct comand is given by:

b. CHISQ.TEST(Actual range, Expected range)

We just need to put in one column the Observed values and in other the expectec values.

3 0
3 years ago
What 2 decimal place number lies between 4.174 and 4.189 ?
allochka39001 [22]

Answer:

41.74 and 41.89

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Which expressions are correct for the situation?
Ludmilka [50]
One of the Answers is C.

8 0
3 years ago
Read 2 more answers
A group of 52 people attend a ball game there were three times as many children as adults in the group set up a system of equati
xxTIMURxx [149]

Answer:

Therefore there total of 39 children presented in group of people who attended a ball game.

Step-by-step explanation:

Given:

Total people present=52 .

And there are 3 times children as adults

To Find:

No.of Children Present in Group.

Solution:

<em>Consider  'x'  be the children and 'y' be Adults presented in group.</em>

<em />

So there are total of 52 people.

Therefore Equation becomes,

x+y=52.

And also there  are 3 times children presented in group as adults were.

So

Children=3 times adults

i.e.x=3y

Using in above Equation we get ,

x+y=52

3y+y=52

4y=52

y=52/4

y=13

Hence there are 13 adults  presented in group

So ,

No.of Children=x=3y

=3(13)

=39

No.of.Children =39

4 0
3 years ago
What is the value of x?
madam [21]

To find the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to find the result.

3 0
2 years ago
Read 2 more answers
Other questions:
  • What is the tadius of this circle if the circumfrance is 18pi cm​
    10·2 answers
  • - Shelia went snowboarding. She spent $118
    14·2 answers
  • Square root of 10 plus the square root of 5<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B10%7D%20%20%2B%20%20%5Csqrt%7B5%20
    6·1 answer
  • The slope of the line below is -3. Is the coordinates of the labeled point to find a point - slope equation of the line
    15·1 answer
  • What's the dífference between paying $10,000 cash for a car or paying a loan of $200 per month for 60 months?
    14·1 answer
  • What is the volume of a sphere with the surface area of 25 pi yd^2 ?
    15·1 answer
  • Write the equation 6x-3y=9 in slope-intercept form. Then graph the line described by the equation .
    5·1 answer
  • Identify the sampling techniques used, and discuss potential sources of bias (if any). Assume the population of interest is the
    5·1 answer
  • Write the equation of the line perpendicular to y =5/6x+1/6 that passes through the point (-9,3)
    8·1 answer
  • Boyle's law states that if the temperature of a gas remains​ constant, then PV​=c, where P=pressure​,V=volume ​, and c is a cons
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!