So x times y=15
x+y=12
solve
x+y=12
subtract x from both sides
y=12-x
subsitute
xy=15
x(12-x)=15
distribute
12x-x^2=15
subtract (12x-x^2) from both sides
0=x^2-12x+15
use quadratic formula which is
x=

where you have
0=ax^2+bx+c
so
a=1
b=-12
c=15
subsitute
x=

x=

x=

x=

x=6+/-

x=6+

or 6-

or aprox
x=10.5826 or 1.41742
the numbers are 10.5826 and 1.41742
Answer:
27,3%
Step-by-step explanation:
(317-249)/249 * 100% = 27,3%
If we were to plot the points on a graph, we could draw a straight lint between them. The question wants us to find the length of this line. We could make a right triangle with this line as the hypotenuse, with an x length of 2(y2-y1) and a y length of 5 (y2-y1). From there we can find the hypotenuse with Pythagorean Theorem: c^2=a^2+b^2.
c^2=(2)^2+(5)^2
c^2=4+25
C^2=41
c=

Decimal approximation: 6.403
Hope this helps!
Answer:
Either -2 or + 1
Step-by-step explanation:
I can't tell u exactly because I don't know the answer choices.
Answer:
The teacher should divide the amount of students by 5, that way they'll find how many groups they'll have. And the amount of groups they'll have is 6 groups of 5 students, you didn't ask for this part but I decided it'd be best to add it. Hope this helps, have an amazing day you awesome human! ^w^
Step-by-step explanation: