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
kolezko [41]
3 years ago
11

4n^(2)+4n=3 Please help with the work

Mathematics
1 answer:
Kaylis [27]3 years ago
3 0

Answer:

n= 1/2 ( \frac{1}{2} )  or  (0.5)

AND

n= -3/2 ( -\frac{3}{2} ) or (-1.5)

Step-by-step explanation:

4n^2+4n=3

step1: move 3 to the other side and make the equation equal to zero.

4n^2+4n-3=0

step2: factorise the equation.

(2n-1)(2n+3)=0

step3: make each bracket equal to zero.

2n-1=0

2n+3=0

step4: solve for n values.

<u>1.</u> 2n-1=0

(add 1 for both sides)

2n=1

(divide by 2 for both sides)

n= 1/2 ( \frac{1}{2} )  or  (0.5)

<u>2.</u> 2n+3=0

( subtract 3 for both sides)

2n=-3

(divide by 2 for both sides)

n= -3/2 ( -\frac{3}{2} ) or (-1.5)

You might be interested in
15.00 + 1.75x &gt; 7.50 + 2.25
ElenaW [278]

Answer:

Step-by-step explanation:

7 0
3 years ago
Determine if p2+14p+49 is a perfect trinomial
shusha [124]

Answer:

Step-by-step explanation:

p²  + 14p + 49 = p² + 2 * 7p + 7²

Comparing with a² + 2ab + b²,

a= p and b = 7

So 2ab = 2*p*7 = 14 p

So, p²  + 14p + 49 is a perfect trinomial

4 0
3 years ago
Herbert has sold 90, 45, 103 and 68 appliances in the last four months, respectively. How many appliances will he need to sell t
Elena-2011 [213]

Answer:

The sale this month = 79

Step-by-step explanation:

Let the amount he needs to sell this month = x

Average = \frac{sum\ of\ individual\ data\ }{number\ of\ entries}

Average= \frac{90\ +\ 45\ +\ 103\ +\ 68\ +\ x}{5}

Note that number of entries = number of months = 5

To maintain an average sales of 77, the amount of sale in month 5 is determined as follows:

77 = \frac{306\ +\ x}{5} \\cross-multiplying\\77\ \times\ 5\ = 306\ +\ x\\385 = 306\ +\ x\\x =385\ -\ 306\\x = 79

7 0
3 years ago
Which expression are equivalent to 2(4f+2g)
Cloud [144]

Answer:

8f+4g

Step-by-step explanation:

You have to distribute 2 to each number in the parentheses 2 times 4 is 8 and since 4 has a variable it is 8f and 2 times 2 is 4 and since 2 has a variable it is 4g. We don't combine the two because they have different variables. So the answer is 8f+4g. Hope this helped :)

8 0
3 years ago
A computer programmer worked 12 hours and earned $510. What is the hourly rate?
Lelu [443]

We can use ratio

If the person works for 12 hours and earns $510, for one hour:

12*1=510*x

x=510/12

x= $42.5

Thus the person earns 42.5 dollars per hour.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Pleaseeeee helppppp ASAPPPPP
    12·1 answer
  • Please help –8 = c /9 c=
    12·2 answers
  • What is the arc measure of AEB in degrees
    8·1 answer
  • Show work for -3/5 x -5
    12·1 answer
  • Round 14,620 to the nearest ten thousand
    15·1 answer
  • The graph f(x) is a transformation of the graph y=g(x).
    9·2 answers
  • which is a shrink of an exponential growth function? a. f(x) = 1/3(3)^x b. f(x) = 3(3)^x c. f(x) = 1/3(1/3)^x d. f(x) = 3(1/3)^x
    10·2 answers
  • What’s the area of a circle
    12·2 answers
  • If five kids sit on a d and one has an orgasm how many are still going
    10·1 answer
  • The diagram represents the factorization of a2 8a 12. A 2-column table with 2 rows. First column is labeled a with entries a squ
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!