4schools sent students to a language corse.
one of the schools sent both french and german students.
the ratio of french to german students was 1: 3.
the school sent 21 german students
the other 3 schools sent the same number of students .
work out the total number of students sent to the language corse

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

you need to give us more information since we can't answer

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.