SOLUTION:
A simple sketch will help;
We can use the sine rule to solve for the angle B;
Thus;
Answer:
Step-by-step explanation:
My opinion is no because Chance is likely to account the result
Answer:
The correct option is d.
Step-by-step explanation:
The given equations are
.... (1)
.... (2)
In equation 2, multiply both sides by 2.
.... (3)
Now add equation (1) and (3).
Divide both sides by 5.
Put this value in equation (2).
Therefore the solution of the system of equation is (2.4,0.2) and the system has only one solution. Option d is correct.
Let x = the unknown number
five more than a number = twice the number
x + 5 = 2x
5 = 2x - x
5 = x
( Balance method is used to solve )
substitution
x + 5 = 2x
5 + 5 = 2 x 5
10 = 10
answer : the unknown number is 5