Answer: $10
Step-by-step explanation:
Let adults tickets be denoted by a
Let student tickets be denoted by s
On the first day of tickets sale, there were 10 adult tickets and 11 students tickets sold for a total of $190. This will be:
10a + 11s = 190
The second day, there were a total of $160 worth of tickets, 5 adult tickets and 12 student tickets. This will be:
5a + 12s = 160
We combine both equations
10a + 11s = 190 .......... equation i
5a + 12s = 160 ........... equation ii
Multiply equation i by 5
Multiply equation ii by 10
50a + 55s = 950 ....... equation iii
50a + 120s= 1600 ........ equation iv
Subtract equation iv from iii
50a + 55s = 950
- 50a + 120s= 1600
-65s = -650
65s= 650
Divide both side by 65
s = 10
The price for the student's ticket is $10.
Answer:
ya the answer is 88
Step-by-step explanation:
If there are two hydrogen atom molecules in one atom of water you'd do 51 times 2, getting you 102 hydrogen atoms in 51 water molecules.
Answer: the system of linear equations to represent this scenario are
b + g = 30
2b = g + 12
Step-by-step explanation:
Let b represent the number of boys in the class.
Let g represent the number of girls in the class.
There are 30 students in the math class. This can be expressed as
b + g = 30
There are 6 more boys than 1/2 the number of girls in the class. This can be expressed as
b = g/2 + 6
Cross multiplying by 2, the expression becomes
2b = g + 12
Answer:
1.28
Step-by-step explanation:
Given that a sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 53% of the chips do not fail in the first 1000 hours of their use.
(Two tailed test for testing sample proportion with population proportion)
Std error of proportion assuming p = 0.53 is
p difference = 0.02
Z= test statistic = p diff/std error = 1.2775~1.28
