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If the perimeter of a scalene triangle is 54.6 cm. What equation can be used to find the value b if side a measures 8.7 cm.?

Answer 1

Sadie Adams

#b=45.9-c# (cm.)

I assume the triangle has sides labelled #a, b,# and #c#

The perimeter #a+b+c# is given to be #54.6# cm and side #a# is given to be #8.7# cm.

This leaves #color(white)("XXX")b+c=45.9# cm. or #color(white)("XXX")b=(45.9 -c)# cm.

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Answer 2

Claire Akin

The equation that can be used to find the value of side ( b ) if side ( a ) measures ( 8.7 ) cm in a scalene triangle, given that the perimeter is ( 54.6 ) cm, is:

[ a + b + c = \text{perimeter} ]

Substitute the known values:

[ 8.7 + b + c = 54.6 ]

where ( c ) represents the length of the third side of the triangle.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

If the perimeter of a **scalene** triangle is 54.6 cm. What equation can be used to find the value b if side a **measures** 8.7 cm.?

If the perimeter of a scalene triangle is 54.6 cm. What equation can be used to find the value b if side a measures 8.7 cm.?