Answer:
3 days
Step-by-step explanation:
20 day x 300 dollar ＝6000 dollars
6000 dollar - 5910 dollar ＝90 dollar
Can be fined 80 dollar because 20 is even number
So,days can be fined:
60 dollar divide 20 dollar ＝3 days
I'm not entirely sure about these, and the last one was tricky but i hope this helped.
Answer:
1.14 liters
Step-by-step explanation:
We have 8% glycerin solution and we need to make it 16% glycerin solution [more concentration].
When we add "x" liters, we add glycerin as well as changes the total. in 12 Liters, there is 12 * 0.08 = 0.96Liters of glycerin. How much we need to add to this??
Note, 16% = 0.16
We can write a Ratio as shown below, cross multiply and solve for x:
We need to add around 1.14 liters
Answer:
See below.
Step-by-step explanation:
Here is an example:-
Solve by elimination:
2x - 3y = 0
3x + 2y = 13
To eliminate the y terms Multiply the first equation by 2 and the second by 3. This gives:
4x - 6y = 0
9x + 6y = 39 Adding the 2 equations:
13x + 0 = 39
13x = 39
x = 39/13 = 3
Finally we find y by plugging x = 3 into the first equation:
2(3) - 3y = 0
3y = 2(3) = 6
y = 2.
40 out of 250 students speak French: 40 / 250 = 0.16
Multiply the number of students surveyed by 0.16:
30 x 0.16 = 4.8
Round up to 5 students.
Answer 5 students
