Answer:
40, 60, 80
Step-by-step explanation:
The sum of angles in all triangles is 180 degrees (assuming you are talking about Euclidean geometry). If 2:3:4 is the ratio then
2x + 3x + 4x = 180
9x = 180
x = 20
Now that we now what x is, we can find the respective angles by plugging the value of x in. The angles are 40, 60, and 80 respectively.
Nothing more can be done to this problem, it stays the same.
Answer:
This one is pretty straightforward.
x=-5/yz
Answer:
1.7
Step-by-step explanation:
( 5x + 2y = 7 ) 2
( - 2x + 6y = 9 ) 5
10x + 4y = 14
-10x + 30y = 45
----------------------
34y = 59
y = 1.7
Answer: The answer is D
Step-by-step explanation: 12x means 12 times x, which means her age is 12 times her brother's age.
