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jolli1 [7]
3 years ago
12

Simplify 2 (8r2+r)-4r

Mathematics
2 answers:
Rainbow [258]3 years ago
5 0
2(8r2+r)-4r

2(17r)-4r

34r-4r

30r
taurus [48]3 years ago
4 0
16r^2+ 2r -4r 16r^2 - 2r 2r ( 8r -1)
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3 years ago
I can’t figure this out at all.
Liula [17]
The fact that this triangle is a right angle triangle makes you now have 2 angles and the 1 side given, so it should be solvable.
First, You know that A=46 and C=90 as it is the right angle, and you know that the sum of any triangle's angles is 180. so now B=180-(90-46)=44
Now to the sides,
sin(B)=opp./hyp.=b/c=8/c=sin(44)
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now, use Pythagoras to find a,
a=√c²-b² =√11.52²-8² which is approximately 8.3 unit length.
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3 years ago
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It is the longest one (20).

Step-by-step explanation:

The hypotenuse is the length opposite the right angle and between the legs. In this case it is the longest one.

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