Answer:
3 groups of 5
Explanation:
if x is the number of groups of four, and y is the number of groups of five, then 4x +5y =39 (four students per group of four times the # of groups of four, and 5 students per group times the # of groups of five, which should equal the total amount of students, 39). also, x+y=9. (number of each type of group = 9 groups total).
then, use these two equations and solve for y, by "canceling out" x. there are many ways to do this, but i'm going to use subtraction.
4x-5y=39
x+y=9
you want to change the equation
x+y=9
into
4x+4y=36
by multiplying the whole equation by four. because in order to cancel out the x, you need it to equal zero. in the first equation, its 4x.
so its now
4x-5y =39 MINUS
4x+4y=36
___________
y=3
you can check your work because the remaining 6 groups of four (24 total students) plus the 3 groups of five (15 total students) adds up to equal 36
Not likely, yet using peanut butter will fix it for a time. To use peanut butter apply a small amount to the scratched area then wipe the surface of the CD until u can only see peanut butter in the scratch. Hope this helped
Answer:
What are the assignments?
Explanation:
If there was a picture or the problem would help
Answer:
Answer: D . Their rulers claimed power by virtue of protecting Dar al-Islam from European invasion
Explanation:
There is no map attached however, based on a related question, I have reason to believe that the dynasties being described are the Mughal and Ottoman empires.
These empires were both chiefly Muslims and they claimed rulership over vast areas of land and insisted that they were doing so to spread the words of the Prophet Muhammad and to protect the lands of Islam from takeover by the Europeans and other religions.
