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
pav-90 [236]
3 years ago
7

Factor the expression below. 4x2 - 1

Mathematics
1 answer:
Mila [183]3 years ago
4 0

Answer:

(2x-1)(2x+1)

Step-by-step explanation:

the answer is c

You might be interested in
Factor the following using GCF and show work. 6x^2+42x-18
aniked [119]
The greatest common factor is 6. Thus means we divide every part of the expression by 6.

6x^2/6 = x^2
42x/6 = 7x
-18/6 = -3

Your new expression is 6(x^2 + 7x -3).
8 0
2 years ago
While setting up a fireworks display, you have a tool at the top of the
atroni [7]

Answer:

0.79 sec

Step-by-step explanation:

Given there is a tool at the top of the building which is dropped by a worker and it follows the following equation at every instant of time .

h(t)=-16t^{2} +h_{0}

where h_{0} =10 feet

We know that this height is measured from the base of the building which means that when the tool reaches the bottom of the building it has h = 0 feet.

Let this be done at time t

h(t) = 0

-16t^{2} +10=0

t^{2} =\frac{10}{16}

t=\frac{\sqrt{10} }{4}

t = 0.79 sec

Therefore the total time taken by the tool to reach the bottom of the building is 0.79 sec.

8 0
3 years ago
What is the solution for -10 < x - 9?
meriva

Answer:

x > -1

Step-by-step explanation:

Simplify both sides of the equation, then isolate the variable.

4 0
2 years ago
Read 2 more answers
Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ.
mart [117]

Answer:

\mu -2\sigma = 915.428 - 2* 22.87=869.69

\mu +2\sigma = 915.428 + 2* 22.87=961.17

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

Step-by-step explanation:

We can assume that the variable of interst X is distributed with a binomial distribution and we can use the normal approximation.

For this case the mean would be given by:

E(X) = np = 2136 *(\frac{3}{7})= 915.428

And the standard deviation would be:

\sigma = \sqrt{2136*(\frac{3}{7}) (1-\frac{3}{7})} =22.87

And if we find the limits we got:

\mu -2\sigma = 915.428 - 2* 22.87=869.69

\mu +2\sigma = 915.428 + 2* 22.87=961.17

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

5 0
2 years ago
Between what two numbers would 9 be located on the number line?
oksano4ka [1.4K]
Answer is A. Because it is located between 9 and 10
4 0
2 years ago
Other questions:
  • Find the values of x and y<br><br> x=42, y=26.3<br> x=47, y=30<br> x=42, y=30<br> x=47, y=26.3
    7·2 answers
  • What is the integer between 12.2 and 13.2
    12·2 answers
  • −5, −6, 0, 6 Which pair of numbers has a sum of zero? (5 points) −5, 6 −6, 0 −5, 0 6, −6
    9·1 answer
  • Is relation t a function? Is the inverse of relation t a function?
    5·2 answers
  • What are the leading coefficient, constant term and degree, if any, of the algebraic expression 7^x + 2x + 1?
    7·1 answer
  • Why is the graph of the rose curve r=4cos2theta
    8·1 answer
  • 1. State the degree of each function and whether each is linear, quadratic or neither. [1 mark
    9·1 answer
  • Liam works at a zoo. He was looking at some data showing the masses of their 5 African elephants. The mean mass of the elephants
    14·1 answer
  • Abboy has 800, he spend 160. What fraction of his original money does he have left
    8·1 answer
  • Solve for x. x = [?] = 5x - 73x + 27 Enter​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!