Answer:
74.82
Step-by-step explanation:
48+38=86 86 X 0.87= 74.82
X= # students who got lower grades
2x+3= # students with grade A
STEP 1:
Add the two sets above equal to 24.
x + (2x + 3)= 24
combine like terms
3x + 3= 24
subtract 3 from both sides
3x= 21
divide both sides by 3
x= 7 (# students lower than A)
STEP 2:
substitute x value from step 1 to find # grade A students
=2x + 3
=2(7) + 3
=14 + 3
=17 (# grade A students)
CHECK:
x + (2x + 3)= 24
7 + 2(7) + 3= 24
7 + 14 + 3= 24
24= 24
ANSWER: There were 17 students with grade A.
Hope this helps! :)
Hmmm. 20 or 30 so the teacher will count the rest,if a student guessed, wrong or right
Answer:
yes
Step-by-step explanation:
divide 3/9 by 3/3 and it equals 1/3
