Answer:
c $157.50
Step-by-step explanation:
because that is the answer I got
Answer:
3/8 = 12/32 is a proportion
Step-by-step explanation:
2:3 and 9:4 is not a proportion, 10/12 and 20/25 is not a proportion, 4/9 and 17/38 is not a proportion
Answer:
6k-5
Step-by-step explanation:
8k-(5+2k) write the equation out
8k-5-2k distribute the (-) to everything inside the parenthesis
6k-5 combine like terms
I'm going to show you two ways to do it.
Way #1 is the slogging way.
Way #2 is the clever way.
Way #1:
' One hundred percent ' means ALL of something.
ALL of the students in the school is the same as 100% of them.
If 10% are absent, then 90% are present.
90% means 0.9 .
1620 students = 90% of the school.
1620 = 0.9 x school total
Divide each side by 0.9: 1620/0.9 = total school
1800 = total school
How many were absent ?
10% of them.
10% means 0.10 .
0.10 x 1800 = 180 students absent .
_______________________________________
Way #2:
' One hundred percent ' means ALL of something.
ALL of the students in the school is the same as 100% of them.
==> If 10% are absent, then 90% are present.
==> The number of students present is 9 times the number who are absent.
1620 = 9 x the number absent
Divide each side by 9 : 1620 / 9 = the number absent
1620 / 9 = 180 absent .
X-5 and what are the flash cards do you mean?
