A triangle has three angles, and their measures add up to 180 degrees.
An isosceles triangle has at least 2 congruent sides, and the angles opposite the congruent sides are congruent.
This triangle has one angle of 40 deg, and two angles that measure the same; call the measure of each base angle x.
x + x + 40 = 180
2x + 40 = 180
2x = 140
x = 70
The base angles measure 70 deg.
So -3 is -(-3) and the opposite of -3 is 3.
so 3 is your anwser.
14-6+5
13
13 is the required answer
Sales tax and tip will increase the price of an item.
The cost of each meal is: $10.89
Let the cost of both meals be x.
A 20% tip means that, the current price is:

A 6% sales tax on the meal means that, the current price is:

So, we have:



The amount paid is $27.72
So, the equation becomes

Make x the subject


So, the cost of each meal is:


Hence, the cost of each meal is: $10.89
Read more about sales tax at:
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