An isosceles triangle has base angles that each measure 69o. Which equation can be used to find x, the measure of the third angle? a
138 + x = 180
b
69 + x = 180
c
138 + 2x = 180
d
2x + 69 = 180

a. 138 + x = 180

Step-by-step explanation:

Because the angles given are 69+69

which equal 138

and x being the missing angle

finally the total of all angles in a triangle = 180

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

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