Which symbol correctly compares these fractions? 8/9 0 4/5

Mathematics

2 answers:

belka [17]3 years ago

6 0

Answer: C

Step-by-step explanation: The deeper into the negatives the lower

Vedmedyk [2.9K]3 years ago

3 0

Answer:

Step-by-step explanation:

- 4/5 > - 8/9

in this case - 4/5 is closer to 0

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Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

$1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0$

which is true

8 0

3 years ago

How would knowing the type of symmetry help you graph a function?

Serga [27]

A graph is said to be symmetric about the y -axis if whenever (a,b) is on the graph then so is (−a,b) . Here is a sketch of a graph that is symmetric about the y -axis. A graph is said to be symmetric about the origin if whenever (a,b) is on the graph then so is (−a,−b) .

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4 0

3 years ago

Read 2 more answers

suppose you create a graph of the cost function, c=20n + 500 of a new bookstore, and you also graph the revenue function, r=25n,

sdas [7]

Answer:

Loss section

Step-by-step explanation:

Given

$c = 20n + 500$ -- cost