Answer: a) x = 5 b) x = 12
Step-by-step explanation: For each one you just do the inverse to get it on the other side of the equal sign. For example x + 3 = 8 would be like this :
1. x + 3 = 8
2. x + 3 - 3 = 8 -3
( + 3 - 3 cancels out)
3. x = 5
Answer:
=3² +4
=14 +3
=17 +2
=19+1
=21
Step-by-step explanation:
Ihope you by the function
Answer:
The answer is 5 students taking English and Math but not History
Step-by-step explanation:
The total students are 28 which are divided into 5 possible groups with no students taking either English only or History only:
- Taking Math only
- Taking English and Math but not History
- Taking Math and History but not English
- Taking English and History but not Math
- Taking triple subjects
The number of students in group 3 is 6. Hence, the total number in group 1, 2, 4 and 5 is: 28 - 6 = 22
Also, the number of students in group 4 is five times the number in group 5, therefore: group 2 + group 5 = 6 times group 5
Additionally, the number of students in group 1 equals that in group 2.
Hence, the equation is: 6 x group 5 + 2 x group 2 = 22 => group 2 = 11 - 3 x group 5 => group 2 = 5 because group 5 is an even number and non-zero, it must be 2.
keeping in mind that there are 52 weeks in a year.
The 95% confidence interval for the true percent of car owners in this city who received a speeding ticket this year is 44.63% to 49.37%
The formula for calculating the confidence interval is expressed as:
CI = p±z√p(1-p)/n
Given the following parameters
n = 1700
p = 799/1700
p = 0.47
z-score at 95% interval = 1.96
Substitute the given values
CI = 0.47 ±1.96√0.47(1-0.47)/1700
CI =0.47 ±1.96(0.0121)
CI = 0.47±0.0237
CI = 0.47+0.0237, 0.47-0.0237
CI = (0.4463, 0.4937)
Hence the 95% confidence interval for the true percent of car owners in this city who received a speeding ticket this year is 44.63% to 49.37%
Learn more here: brainly.com/question/17042789
