Answer: A. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.
System A :
-x - 2y = 7 ..........(1)
5x - 6y = -3 ..........(2)
If we multiply the first equation by 5, then we will get :
5(- x - 2y) = 5(7)
⇒ - 5x - 10y = 35 ........... (3)
Now the Sum of equation (2) and equation (3) is:
⇒ Sum :
Now if we replace the second equation in system A with this , then we will get the system B.
Solution of system B:
First we will take the second equation as there is only one variable 'y'. So, we will solve that equation for 'y'
Now for solving 'x', we will plug y= -2 into the first equation
So, the solution of system B is (-3, -2), that means the solution of both systems are same.
Step-by-step explanation:
Y = -5x + 15
You can use point slope formula to get the answer
F ( -1 ) = 2 · ( -1 )³ - 3 · ( -1 )² +7 =
= 2 · ( -1 ) - 3 · 1 + 7=
= - 2 - 3 + 7 = 2
Answer: Its the third one she did not put 0 in the placeholder
Step-by-step explanation:
Answer:
9.8cm
Step-by-step explanation:
The pythagorean theorem states that, for right triangles, . Using this equation, we can solve for the hypotenuse.
a = 9cm
b = 4cm
c = hypotenuse
9^2 + 4^2 =c^2
81 + 16 = c^2
9.8 = c