11. In a survey of 100 students, the numbers studying various languages were found
to be: Spanish 28, German 30, French 42, Spanish and French 10, Spanish and
German 8. German and French 5, all the three languages 3.
(1) How many students did not study any language?
How many students had French as their only language?
(iii) How many students studied German if and only if they studied French?

5104.38 inches

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

answer: 2/13 chance i think ( ͡° ͜ʖ ͡°)( ͡° ͜ʖ ͡°)