Answer:
30% students
Step-by-step explanation:
Let x be the number of total students of a school.
63% are girls then total number of girls = (0.63)x
37% are boys then total number of boys = ( 0.37)x
Now 23% of girls wear contacts then total number of girls
= (0.63x) × 0.23
= (0.1449x)
And 42% of boys wear contacts then total number of boys wearing contacts
= (0.37x) ( 0.42)
= (0.1554)x
Total students wears contacts = ( 0.1449x) + (0.1554x)
= (0.3003x)
Percentage of students wear contacts =
× 100
=
× 100
= 30%
All 30% students wear contacts.
Answer:i dont know
Step-by-step explanation:
Answer:
R= 0.08 i think
Step-by-step explanation:
Easy 5+4=9+8=17 your answer is 17 :)
Answer:
The number of solutions of the system is 0
Step-by-step explanation:
we know that
When solving a system of equations by graphing, the solution of the system is equal to the intersection point both graphs.
In this problem the graphs do not intersect
therefore
The number of solutions of the system is 0