HELP Will Give Metal!!!! What is the value of y in the solution set of the system of linear equation shown below. *10 *8 *6 *2
PLEASE HELP!!!! @NY,NY
PLEASE HELP!!! @misty1212
HI!!
i would love to help, but he "below" is not shown!
y=-x+12 4x-2y=36 Sorry @misty1212
@misty1212
lol hi again!
you got \(y=-x+12\) which means the \(y\) in the second equation is also \(-x+12\)
put it in and get \[4x-2(-x+12)=36\] and solve that sucker for \(x\) can u do that ?
10? Can you possibly help me with 3 more? @misty1212
hold on let me check your answer first
yeah \(x=10\) but you still need \(y\) right? or no?
actually that is all you need, it asks for \(y\) not \(x\) so we have to find \(y\)
ok, so 10 is or isn't the answer? @misty1212
no, 10 is x you are asked for y
but you know \(y=-x+12\) so y is easy to find if \(x=10\)
so 2? @misty1212
yes
which of the following expressions is equivalent to x(x+5) - (1-5x)? *-4x^2+6x *x^2-1 *6x^2+4x *x^2+10-1 which inequality is equivalent to 5x-2y>10? *y>5/2x-10 *y> 5/2x+5 *y <2/5x - 5/2 *y< 5/2x-5 @misty1212
\[x(x+5)-(1-5x)\\ x^2+5x-1+5x\\ x^2+10x-1\]
\[5x-2y>10\\ 5x+10>2y\\ \frac{5}{2}x+5>y\]
or \[y<\frac{5}{2}x+5\]
I don't understand?? @misty1212
where are you stuck?
which one, first or second?
I guess lets start with the first one...are those the steps to get the answer? @misty1212
yes
so the first answer is D and the second answer is A??
they are both D
i made a typo, last one should be \[y<\frac{5}{2}x-5\]
Thank you so much can you possibly help with one last question
sure
The perimeter of a rectangle is 90 centimeters. The width of the rectangle can be represented by (x+2), and its length can be represented by (3x-5)What are the dimensions of this rectangle in centimeters? *Width=10 Length 25 *Width=12 Length=29 *Width=14 Length=31 *Width=16 Length=32
@misty1212
\[2(x+2)+2(3x-5)=90\] solve for \(x\)
12 @misty1212
\[2x+4+6x-10=90\\ 8x-6=90\\ 8x=96\\ x=12\]
yeah that is x but that is not the answer
the dimensions are \(x+2\) which is \(14\) by \(3x-5\) which is 31
so C
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