Answer:
58.33333%
Step-by-step explanation:
Exam ≥ 80% Exam < 80%
Studied 4+ hours 18 6
Studied < 4 hours 10 14
The number of students who took the exam is 18+10+6+14 =48
The number of students who got an 80 or above is 18+10 = 28
The percent with 80 or above is 80 or above over total
28/48
.5833333
Answer:
Step-by-step explanation:
3 times 12 equal 36.
36 minus 15 equals 21.
So Joaquin uses 21 light bulbs.
Answer:
113
Step-by-step explanation:
Well, let's first write these as points.
( 2 , 50 )
( 4 , 100 )
We can see that when "x" is reduced by 2, "y" is reduced by 50. This means that if we reduce "x" by 1, "y" will be reduced by 25. Thus, we can say that if "x" is 1, "y" will be 25.
( 1 , 25 )
What we know that 25 * 1 = 25, and that 2 * 25 = 50. We can see that multiplying "x" by 25 will give us our "y". We can now write this as an equation.
y = 25x
