Find the measure of MN¯¯¯¯¯¯¯¯¯¯.
1 answer:
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Answer:
3 + 4
Step-by-step explanation:
If u = < x₁, y₁ > and v = <x₂ , y₂ > , then
u • v = x₁x₂ + y₁y₂
Given
u = < , - 1 > and v = < 3, - 4 >, then
u • v = 3 + (- 1)(- 4) = 3
+ 4
Answer:
The correct options are: Option A, C and D
Step-by-step explanation:
We need to choose correct options by solving the given system of equations.
Let:
First Multiply equation 2 by 2 and add both equations.
Now, we will put value of x in equation 2 to find value of y
So, we get x = 3.14 and y = 2.14
Solution set is (3.14,2.14)
The given solution set (2,3) is not the solution of system of equations.
If we put x=2 and y =3 in the first equation:
(2,3) when substituted in the First equation the equation is True.
If we put x=2 and y =3 in the second equation:
So, (2,3) when substituted in the second equation the equation is false.
The correct options are: Option A, C and D