Answer:
what you marked blue is right
Step-by-step explanation:
I think
Answer:
16, 21, 25
Step-by-step explanation:
19 and 21 are prime numbers, and thus cannot fit in this scenario.
Answer: A three-sided polygon is a triangle.
There are several different types of triangle (see diagram), including: Equilateral – all the sides are equal lengths, and all the internal angles are 60°. Isosceles – has two equal sides, with the third one a different length.
Step-by-step explanation:
Hey there! I'm happy to help!
We have a 5x is one equation and a -5x in another equation. We can combine the two equations to cancel out the x and then solve! This is called solving by elimination.
5x-4y=6
+
-5x+4y=-10
0= -4
Since we lost our x and y while solving, there cannot be any solution.
Therefore, the answer is no solution.
Have a wonderful day!
Answer:
42 students werent wearing sweatshirts
Step-by-step explanation: