Answer:

Step-by-step explanation:

Answer:
the total angles shoudl add up to 180 but the angles listed adds up to 190 degreees
Step-by-step explanation:
<h2>
<em><u>This is not a real triangle</u></em></h2><h2>
<u>no triange</u></h2><h2>
<u>BBBBBBBB</u></h2>
I want brainliest!
There are 19 people total, and groups of four are being asked of us. We can use the formula for permutations or combinations.
Permutations:

Combinations:

Where in both scenarios, there are <em>n</em> objects being chosen at <em>r</em> times.
19 P 4 is 93024
19 C 4 is 3876
It all depends on whether order matters with group placement; if it does, your answer is
93024, if not, then your answer is
3876.:)
Answer:
21 and 30
Step-by-step explanation:
x + y = 51
x - y = 9
add the two equations and y's will cancel out
2x = 42 divide by 2
x = 21 so put 21 in for x in the top equation and solve
21 + y = 51
y = 30
The answer for the question is D!!