Answer:
Yes
Step-by-step explanation:
It will be a right-angle triangle if it satisfies the pythagoras theorem
12.5² = 156.25
10² = 100
7.5² = 56.25
Since 12.5² = 10² + 7.5²,
it is a right-angle triangle with 90° at C (because it's opposite the longest side, the hypotenuse)
Answer:
y=15x
Step-by-step explanation:
To figure out if an equation is proportional, substitute 0 for x. If y then equals 0, then the equation is proportional.
The system of equations:
2 y = - x - 1
2 y = x + 5
---------------------
- x - 1 = x + 5
- 2 x = 5 + 1
- 2 x = 6
x = - 6 : 2
x = - 3
2 y = - 3 + 5
2 y = 2
y = 1
The solution is ( - 3 , 1 ).
Answer: The x-coordinate of the solution to the system is: x = - 3.
Answer:
13.
Step-by-step explanation: divide 15 and 10 to get 1.5 and then multiply 1.5 by 9
