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
defon
3 years ago
9

What is 4xsquared minus 9 equals 0

Mathematics
2 answers:
topjm [15]3 years ago
8 0

Answer:

<h2>±3/2</h2>

Step-by-step explanation:

4x^2 - 9 = 0

4x^2 = 9

2x = 3

x = +-3/2

I'm always happy to help :)

g100num [7]3 years ago
7 0

Answer:

x  = ±3/2

Step-by-step explanation:

4x^2 - 9=0

Add 9 to each side

4x^2 -9+9 =0+9

4x^2 =9

Divide each side by 4

4x^2/4 = 9/4

x^2 = 9/4

Take the square root of each side

sqrt(x^2) = ±sqrt(9/4)

x  = ±sqrt(9)/sqrt(4)

x  = ±3/2

You might be interested in
54 ÷ ( 8 - 5 )<br><br><br><br>full explanation too please​
Tresset [83]

Use order of operations.
First step do inside the parentheses

8-5 = 3


Now you have 54 / 3


Now divide

54/3 = 18


answer: 18

5 0
2 years ago
Read 2 more answers
explain how multiplying 4/10 and 3/10 is similar to multiplying 0.4 and 0.3 (please only answer if you for sure know the answer!
Vesnalui [34]
Its the same just one are fractions and one is decimal but the decimal is a decimal of 10
8 0
3 years ago
The height of a baseball in feet can be found by the equation -4.982 – 20t + 1000. How far has the
disa [49]

Answer:

875.018

Step-by-step explanation:

To solve this, we must plug in 6 for our t value. So, we have the equation:

-4.982 - 20(6) + 1000

Following the rules of PEMDAS, we have:

-4.982 - 120 + 1000 = 875.018

8 0
3 years ago
In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat
Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1004, \pi = 0.53

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

3 0
3 years ago
Does the following picture represent a linear function?
nekit [7.7K]

Answer: No

Step-by-step explanation: For x 0-2, the y is increasing by +5 every time. However, the moment it hits x=2, it starts decreasing by -5 every time. This means that it does not follow on set pattern (either +5 or -5) and looks more like a ^ than a /.

7 0
3 years ago
Read 2 more answers
Other questions:
  • If a fair die is rolled 3 times, what is the probability, to the nearest thousandth, of getting exactly 0 twos?
    14·1 answer
  • What times what can equal 26
    9·2 answers
  • a salsa recipe uses green pepper, onion, and tomato in the extended ratio 3 : 5 : 7. How many cups of tomatos are needed to make
    13·1 answer
  • The Red Hook Raiders fundraiser has raised
    7·2 answers
  • Whats the answer to this?
    13·1 answer
  • 16+2x=10+8x WILL MARK BRAINLIEST
    15·1 answer
  • How many different 5 digit natural numbers are there starting with odd numbers or ending with even numbers.
    7·1 answer
  • Determine whether or not the triangle with the given side lengths is a right triangle.
    10·1 answer
  • Can the numbers 12,6 , 6 be used to form the sides of a triangle
    13·1 answer
  • Together, Wally and Sam have 20 toy trains. Wally has 8 more trains than Sam. How many trains does each boy have?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!