Answer:
The ordered pair (10, 5) is not a solution to the system because it makes at least one of the equations false.
Step-by-step explanation:
2x−5y=−5
x+2y=11
In equation (1), substitution of (10,5)
2x−5y=2(10)-5(5)=20-25=-5
However in equation (2), on substitution of (10,5)
x+2y=10+2(5)=10+10=20 ≠11.
However, the solutions of the simultaneous equations
2x−5y=−5
x+2y=11
are (5,3)
Answer:
The trig ratios can be used to find lots of information, and one of their main purposes is to help solve triangles. To solve a triangle means to find the length of all the sides and the measure of all the angles.
Answer:
Hi there, I believe the answer to this equation is: 2.8
Step-by-step explanation:
Subtract 7 on both sides so
5n+7=21-7
you are left with 5n=14 you need to get n by itself so divide 5 on both sides.
5n/5 = 14/5
n=2.8
Hope this is correct :)
Have a great day
Answer:
4x + 276
Step-by-step explanation:
Multiply 4 by 69 and x.
The square root of 73. Since the theorem is a^2+b^2=c^2 and only works with right triangles. You take 2/2 the base so you have a right triangles with a hypotenuse if 9 and a side of 3. Then you just plug in to solve.
