It should be 3 bookshelves. You put 3 of the math books on each one, then two reading books on each one. Hope this helps
{x=-1/3-10/3y
5x+20y=5
5(-1/3-10/3y)+20y=5
solve the equation
.
.
Y=5
substitute the value of y into the equation
x=-1/3-10/3×2
.solve the equation
.
.x=-7
(x,y)=(-7,2)
{3×(-7)+10×2=-1
5x(-7)+28×2=5
simplify
{-1=-1
5=5
the ordered pair is asolution
(X,Y)=(-7,2)
That's all!!!!
6.166 ft. a minute Idk if thats what you needed though
Answer:
40
Step-by-step explanation:
3x^2 + 8x = 2
3x^2 + 8x - 2 = 0
D = b^2+4ac
D = 8^2+4(3)(-2)
D = 64+(-24)
D = 64-24
D = 40
First, you must find how much $ the discount takes off
89.99 * .15
=13.4985
Subtract that from 89.99
=76.4915
If you estimate it,
$ 76.49
