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yuradex [85]
3 years ago
12

If a^2-5a+1=0,what is the value of a^2-1/(a)^2​

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0
-9-3sqrt21 or -9+3sqrt21
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What equation represents a line that passes through (4,1/3) and has a slope of 3/4
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slope =  m\implies \cfrac{3}{4}
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% point-slope intercept
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3 years ago
A train traveled 30 miles at an average speed of 60 mi/h ind the time taken for the trip
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Change the fraction w-3/w+5 into an equivalent fraction with the denominator w2 + w – 20.
viktelen [127]
ANSWER

\frac{ {w}^{2}  - 7w + 12}{ {w}^{2}  + w - 20 }

EXPLANATION


The given fraction is,

\frac{w - 3}{w + 5}

To get an equivalent fraction, we multiply both the numerator and the denominator by the same quantity that will give us

w²+w-20

in the denominator.


This implies that,

\frac{w - 3}{w + 5}  =  \frac{(w - 3)(w - 4)}{(w + 5)(w - 4)}

We multiply out the numerators and denominators using the distributive property to obtain,


\frac{w - 3}{w + 5}  =  \frac{ {w}^{2}  - 4w - 3w + 12}{ {w}^{2} - 4w + 5w - 20 }

This simplifies to

\frac{w - 3}{w + 5}  =  \frac{ {w}^{2}  - 7w + 12}{ {w}^{2}  + w - 20 }


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3 years ago
2)) There are 32 1/5 calories in<br> a candy bar. How many calories<br> are there in 33 candy bars?
CaHeK987 [17]
If 1 candy bar is 32 1/5 then you would multiply 32 1/5 x 33 =1062.6
≈ 1063 calories
6 0
3 years ago
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