wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If y=−x−15 and 5y2−37=−x2, then the value of 2x+6y is.

A
95
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
59
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
89
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
149
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 59
Consider the equations x+y=15...(i)
and 5y2+x2=37 ...(ii)
Multiplying the second equation by 2 gives us 5y+x=74.
Now adding it with equation no (i) gives us 6y+2x=7415=59
6y+2x=59

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Cramer's Rule
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon