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Ksivusya [100]
4 years ago
7

How do I solve this? Will mark brainliest, just trying to learn.

Mathematics
2 answers:
GaryK [48]4 years ago
8 0

Answer:

5

Step-by-step explanation:

pshichka [43]4 years ago
5 0

Answer:

5

Step-by-step explanation:

When we are looking for the starting average rating, we plug in zero for x. We do this because x represents time and we are looking for the starting value.

y = 0 + 5

y = 5

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If x^2+1/x^2=3 find the value of x^2/(x^2+1)^2<br> Express answer as a common fraction.<br> Thanks!!
timama [110]

x^2+\dfrac1{x^2}=3\implies x^4+1=3x^2\implies x^4-3x^2+1=0

By the quadratic formula,

x^2=\dfrac{3\pm\sqrt5}2\implies x^2+1=\dfrac{5\pm\sqrt5}2

Then

(x^2+1)^2=\dfrac{25\pm10\sqrt5+5}4=\dfrac{15\pm5\sqrt5}2

\implies\dfrac{x^2}{(x^2+1)^2}=\dfrac{\frac{3\pm\sqrt5}2}{\frac{15\pm5\sqrt5}2}=\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}

Multiply numerator and denominator by the denominator's conjugate:

\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15

3 0
3 years ago
Explain why 2/3 x 12 can be written as 2 x 12 divided into 3.
777dan777 [17]

because of the communities property



6 0
3 years ago
Read 2 more answers
How many times does 20 go into 144
Rainbow [258]
144 divided by 20 is 7.2

8 0
4 years ago
Read 2 more answers
Okay i am begging all of the math wizards on brainly to help me. it is end of the semester for me and im trying so hard not to f
Travka [436]

Answer:

Ok its pretty straight forward

So for every x its 1

And every y its 4/5

To make life simpler lets just make 4/5 into a whole number

So we can make it into 20/5 which equals 4

To get to 20/5 we multiply 4/5 by 5

So we multiply the x by 5 too

We’d get (5,5)

So you can plot that

And the lines should automatically plug in a different point

You can plug it into negatives

-5, -5

so something between those lines

Like i dontt get how lines work here it Make sure its on the 5,5

I can’t think of an equation but I guess

5=m5

In the Format  Y=mx (yes no y intercept because its a direct proportion formula)

Or you can use the format

y/x=m

5/5=m

Or if they suggest it in a y intercept formula

y-mx+b

just plug in like y with 5 and the x with 5.

You can also use the plot (10,8) still works :)

If I’m worng I’m sorry the question is weird and I’m assuming they asking you about Proportional/direct relationships

5 0
3 years ago
PleaSe help!!! &amp; explain
mafiozo [28]
A) arithmetic because it is a constant. E.g 5-2 is 3 and this is true through out the series

B) this is geometric because the ratio is constant. The ratio of each is 3. E.g 81/27= 3 and this is true through out the series

C) arithmetic because it is constant. 11-3= 8, and 8 is the answer through out the series

5 0
3 years ago
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