Y *x =20
y +x =9
rewrite 1st eq. as y = 20/x
subsituute that into 2nd eq.
20/x +x =9
multiply each term by X
20 +x^2 = 9x
subtract 9x from each side:
x^2 - 9x +20 = 0
now factor:
(x-5) (x-4) = 0
solve for x
5-5 = 0
4-4 = 0
so X can be 4 or 5
replace x into equations and solve for Y
so when X = 4, Y = 5
When X = 5, Y = 4
x= 5,4
y = 4,5
Answer:
0.027
Step-by-step explanation
If <em>s </em>= 0.3, and <em>s</em> is being cubed, that's the same as 0.3 cubed
Cubed just means to the third power.
So that mean o.3 cubed is the same as (0.3)(0.3)(0.3)
Therefore, the answer is 0.027
Answer:
183/25 is an equivalent fraction form for decimal 7.32
Step-by-step explanation:
Its not, 1365x5=6825. It is not reasonable.
Lets try
centimeter is about 1/2 of a inch
if 28 square cm, the book coould be about 4m by 7cm (aoub the size of a recipt)
if 28 square in the book could be about 4in by 7in (regular size)
I would guess 28 square INCHES (cm is too smal)
