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AlladinOne [14]
3 years ago
15

Can the expression be factored furthered? show your work.(x2 + 4) (x2 -4)

Mathematics
2 answers:
lukranit [14]3 years ago
8 0
(x^2 + 4) (x^2 -4) =\\
(x^2+4)(x-2)(x+2)
torisob [31]3 years ago
5 0
Yes.The second factor is the difference of 2 squares,
so the second factor alone becomes

(x² - 4) = (x + 2) (x - 2)
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The director of a state agency believes that the average starting salary for clerical employees in the state is less than $30,00
ss7ja [257]

Answer:

The test statistics is   z = -1  

Step-by-step explanation:

From the question we are told that

   The sample size is  n  =  100

  The null hypothesis  is  H_o : \mu = \$30000

   The alternative hypothesis is  H_a  :  \mu  < \$ 30000

   The sample mean is  \= x  = \$29,750

    The standard deviation is  \sigma  = \$2,500

    The level of significance is  \alpha =0.05

Generally the test statistics is mathematically represented as

        z = \frac{\= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }

=>      z = \frac{29750 - 30000 }{ \frac{ 2500}{ \sqrt{100} } }

=>      z = -1    

7 0
3 years ago
What is the slope of the line that crosses through points (0,0) and (1,2). How can Find the answer to the problem?
qwelly [4]

Answer:

The correct answer is m = 2/1 because they first point it reaches is (1,2) and so you insert those numbers (x,y) into the rise and run equation (y/x) and get the answer 2/1.

Hope this helps!

(Hint: M = Slope)



5 0
3 years ago
PLEASE HELP ME!!!! i dont get this at all
daser333 [38]
Just divide the number that is biggest by 2 and you should get the answers for example #1 10÷2=5, #2 1÷2=0.5 #3 0.01÷2=0.005
5 0
3 years ago
PLEASE HELP ME!
Troyanec [42]

If 450 is 1/4 of the amount that Henry has, you can find Henry’s amount by multiplying 450 • 4 which gives you an answer of 1800

Or, if you’re looking for a more complicated way, which I doubt, you can set up the problem as:

1/4x=450 and solve by dividing 450 by 1/4

7 0
3 years ago
How many years will Samsung galaxy 2 in 1 laptop last
rodikova [14]

Answer:

i think 6 years because i always used it

Step-by-step explanation:

make me my brainliest answer

4 0
2 years ago
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