Answer:
Well, if we know that an obtuse angle is an angle greater than 90 degrees, and that a triangle's angles MUST sum up to 180 degrees and contain three angles. Then it logically follows that there's no way for a triangle to have 3 angles AND have two of the three be greater than or equal to 90 degrees as the remaining angle would have to be zero degrees or some "negative angle"- which I am pretty sure doesn't exist lol! As for a proof, I think you can cook up something with what I have given you so far :)
66 degrees
Add 30, 57, and 27, then subtract from 180
<span>-2(-6+5k)-1
Use distributive property(Multiply the -2 by the -6 and 5k)*Note: When you multiply a negatavie number by another negative number, it creates a positive number.
12 - 10k - 1
Subtract 1 from 12.
Final Answer: 11 - 10k
This equation cannot be simplified down any longer.</span>
It takes Emily 6 minutes to wash the car. This means he washes 16
1
6
of the car per minute.Larissa therefore washes 18
1
8
of the car per minute. Working together, they both wash 16+18
1
6
+
1
8
of the car, or 724
7
24
of the car each minute. This means that it takes 247
24
7
minutes to wash the entire car — or 3 minutes, 25.714285... seconds total.
