Question

Will fan and medal.. 5 questions i'm stuck on.. Help please..


Solve the equation for y.

8x – 9y = 11

Answer 1

@mathmath333 @johnweldon1993
Help please??

Answer 2

D

Answer 3

Thank you!

Answer 4

@kaydra14 Help me please??

Answer 5

a and c

Answer 6

Thank youu!!

Answer 7

\(\large\tt \begin{align} \color{black}{7x-5y=28\\~\\
(1.)7x-5y\\
=7\times (-6)-5\times (-14)\\
=-42+70\\
=28~~~\checkmark\\~\\
(2.)7x-5y\\
=7\times (-1)-5\times (-7)\\
=-7+35\\
=28~~~\checkmark\\~\\
(3.)7x-5y\\
=7\times 4-5\times 10\\
=28-50\\
=-22~~~\wrong\\~\\
(4.)7x-5y\\
=7\times 7-5times 9\\
=49-45\\
=4~~~\wrong}\end{align}\)

Answer 8

@mathmath333
so it's A&B?

Answer 9

yes

Answer 10

There's 2 more after this one, I failed the test, attempting to do the last three on my own haha.

Answer 11

try to put that two options in RHS of equation and see if it equals 11
if so then which ever option equals 11 is correct

Answer 12

*LHS of equation

Answer 13

Alright, thanks.

Answer 14

u got the answer

Answer 15

@mathmath333 yeah it was A, i forgot i could put the question on BlackBoard so my teacher could help haha. There's one more. Then I'll be finished for the day. Yay! haha.

Answer 16

That's the last one.

Answer 17

\(\Large3x-\dfrac{y}{4}=11\)

now lets put first option\(\Large(3,-8)\)

\(\Large3x-\dfrac{y}{4}=11\\
\Large 3\times 3-(\dfrac{-8}{4})\\
\Large=9-(-2)\\
\Large =9+2\\
\Large =11\)


\(\Large3x-\dfrac{y}{4}=11\)

now lets put second option\(\Large(4,4)\)

\(\Large3x-\dfrac{y}{4}=11\\
\Large 3\times 4-(\dfrac{4}{4})\\
\Large=12-(1)\\
\Large =11\\
\)

so second option is also correct

that means option \(\Large D\) both are solutions is correct

Answer 18

So B&D..
Thank you!

Answer 19

lol not B and D


only \(\Huge D\)

Answer 20

Ohhhhhhhhhh haha thank you