Answer:
wait what?? lol i dont get this question-
Answer:
The player answer correctly 30 questions
Step-by-step explanation:
First we have to develop the information that gives us as 2 equations
x = correct answer
y = incorrect answer
z = score = 40
h = total answer = 50
2x - y = z x + y = h
2x - y = 40 x + y = 50
we clear the x of one equation and replace the value of x in the other equation
x = 50 - y
2x - y = 40
2(50 - y) - y = 40
100 - 2y - y = 40
-3y = 40 -100
y = -60/-3
y = 20
x = 50 - y
x = 50 - 20
x = 30
This is infinity solutions -
33x-33+99=33x-33-99
99=-99
Since 99 __equal -99 the equation has many solutions
This expression does not have an answer. If both sides are multiplied by 2.6, then you receive an equation of 2.6 = 22.1. Since this expression is incorrect, there is no solution.
Hope this helps!
Answer:-100/7
Step-by-step explanation:
To find the reciprocal of -0.07
Convert -0.07 to fraction
-7/100
Reciprocal
=-100/7
