\[-4x+16=116\] this is what you have right? @carsonce
Subtract 16 from both sides -4x+16 = 116-16 -16 This is what we get. -4x = 100 -4 -4 now divide both sides by -4 x = 100/-4 = -25 x = -25
I just need to know how to identify the solution
Oh wow thank you
@carsonce please let me know if there's something you don't get
we can check this too watch
-4(-25) = 100 + 16 = 116 116 = 116 this is how we check
Ohhh that makes sense
if you need any more help let me know
How would you do this? The perimeter of a rectangular photo is 72 cm. The length is twice the width. What are the length and width of the photo?
let's translate this the length is TWICE the width So the length is 2x and the width is x Does this make sense? |dw:1444170894921:dw|
so let's work this out perimeter means that we must add up all the sides
How would I do that?
we add up all the sides
2x+2x+x+x = 72 and set them equal to 72 because perimeter means to sum up all the sides.
Now 6x = 72 6 6 x = 12
2(12) = 24 that's the length and 12 is the width does this make sense?
Yeah thank you so much
absolutely if you need anything let me know take care