3/10 of 400 = 120
in percentage shall be as follow
120/400 * 100 = 30%
In Mr.Ruiz class there is 40 students so he could put 5 girls and 5 boys in each groups and that would make 4 groups of 10.
:) Glad to help :)
Answer:
7
Step-by-step explanation:
24^2+x^=25^2
576+x^2+576
49=X^2
square root 49 and x
x=7
Answer:
$16.25 $15.95 $15.75
Step-by-step explanation:
because a 15% tip is $3.00
Let x = number of questions worth 2 and y be those worth 5.
so we have the system:-
x + y = 50
2x + 5y = 145
multiply first equation by -2:-
-2x - 2y = -100
Add this to the second equation:-
3y = 145-100
3y = 45
y = 15
and x = 50-15 = 35
Answer:- there are 35 questions worth 2 points and 15 worth 5 points.
