Answer
There are two solutions, $ \pm 0.4$
Work Step by Step
$7y^2+0.12=1.24$
$7y^2=1.12$
$y^2=0.16$
$y=\pm \sqrt 0.16$
$y=\pm 0.4$
There are two solutions, $ \pm 0.4$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.