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
nignag [31]
2 years ago
8

Pls help with the following:

itle="9x {}^{2} - 4 = 0" alt="9x {}^{2} - 4 = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
mario62 [17]2 years ago
7 0

Answer:

x = ± \frac{2}{3}

Step-by-step explanation:

9x² - 4 = 0 ( add 4 to both sides )

9x² = 4 ( divide both sides by 9 )

x² = \frac{4}{9} ( take the square root of both sides )

x = ± \sqrt{\frac{4}{9} } = ± \frac{\sqrt{4} }{\sqrt{9} } = ± \frac{2}{3}

You might be interested in
Solve each system of linear or non-linear equations. Show all work!!<br> 3x - 4y = 13<br> 2x + y = 5
OLga [1]
Answer: See below

Explanation:

3x - 4y = 13 (1)
2x + y = 5 (2)
——————
3x - 4y = 13
4(2x + y = 5) (2) times 4
——————-
3x - 4y = 13
8x + 4y = 20
——————-
11x = 33
x = 33/11
x = 3

Plug x = 3 in (2):

2(3) + y = 5
6 + y = 5
y = 5-6
y = -1

Thus, x = 3 and y = -1
6 0
4 years ago
An excavating company charges $300 an hour for the use of a backhoe and $500 an hour for the use of a bulldozer. (part of an hou
Fed [463]

We have that

Cost use of a backhoe----------------------$300 an hour

<span> Estimate for equipment rental each week---------------------$18,400</span>

Total hours operator per week--------------------------------------40

<span> 40*300</span>=$12000---------------------it is the cost per week to use a backhoe

 $12000<$18400  is ok 

<span> The maximum of hours that I can rent </span>a backhoe <span> are 40 hours, since it is the limit of the operator and it do not overcome the total budget </span>

4 0
3 years ago
Convert 29 inches to feet. Round answers to the nearest tenth
Bess [88]
29 ÷ 12 = 2.41667
Your answer is 2.4 feet
7 0
4 years ago
How many total terms are there in the following sequence. 7,10,13,...,391,394
nlexa [21]

Answer: n = 130

Step-by-step explanation:

The sequence is an Arithmetic progression ( AP )

The last term of the sequence is (L) is 394 with the formula

L  = a + ( n- 1 )d . From the sequence, a = 7, d ( common difference ) = 3 and L ( last term ) = 394, and n = ?

Put those values in the formula above and solve for n.

  a + ( n - 1 )d =  L

  7 + ( n - 1 ) x 3  = 394

         7 + 3n - 3   = 394

             4 + 3n     = 394

                    3n     = 394 - 4

                     3n     = 390

                        n     = 130      

4 0
3 years ago
Read 2 more answers
Kim is drawing a map of the different schools in her school district. She knows that her middle school is 10.6 miles away from t
Stolb23 [73]
4 inches is the answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • Plz help meI will mark u brainliest 2.. Write an expression that represents the amount of money they collected each night. The t
    14·1 answer
  • Line l passes through the points (1, 3) and (2, 5), and
    5·1 answer
  • For each x and n, find the multiplicative inverse mod n of x. Your answer should be an integer s in the range 0 through n - 1. C
    7·1 answer
  • Which Pythagorean identity is correct?
    8·2 answers
  • Viola drives 2 kilometers up a hill that makes an angle of 3 degrees with the horizontal. To the nearest tenth of a kilometer, w
    5·1 answer
  • Good Mornting hru?<br> 3(7)+4(6)=
    5·1 answer
  • How many movie tickets can you buy with $42 if one ticket costs $6 (include equation)
    11·2 answers
  • I remember being taught this but I can't remember how to solve it. Can you explain how to get the answer??
    9·2 answers
  • Which of the following functions is graphed below?
    9·1 answer
  • 88 points for this question ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!