Here is the math, did it on paper, sorry it’s blue. just add parenthesis around the x in the second equation and add what x equals. then solve as PEMDAS.
Answer:
Step-by-step explanation:
3n + 5p + 2 + n
Add up all the 'n's : 4n + 5p + 2
That's all you can do with it
Answer:
20 students
Step-by-step explanation:
If the class decreased by 15%, the students that she has now (17) represents a percentaje of:
100% - 15% = 85%
so<u> the 17 students are 85% of what she had</u>:
Students Percentage
17 ⇒ 85%
and we are looking for how many students she had 2 years ago, thus we are looking for the <u>100%</u> of students (the original number of studens). If we represent this number by x:
Students Percentage
17 ⇒ 85%
x ⇒ 100%
and we solve this problem using the <u>rule of three</u>: multiply the cross quantities on the table( 17 and 100) and then divide by the remaining amount (85):
x = 17*100/85
x = 1700/85
x=20
2 years ago she had 20 students
18
-3
0.9
Ugh hbd f go ihxhjf go
The area of a square is always:
A=s^2 where s=side length, in this case:
A=4^2=16 in^2
The perimeter of a square is always:
P=4s, in this case:
P=4*4=16 in
