Out of a survey of 49 randomly chosen students 12 said they were going to attend a concert predict the number the number of students who attend the school
Answers
Answer:
Option C is correct.
The number of students who attend the school is approximately 980.
Step-by-step explanation:
The complete question is presented in the attached image to this question
It is known that 240 students bought concert tickets. That is, 240 students are attending the concert.
But out of a randomly chosen 49 students, 12 say that they are going for the concert.
Using the sample for a prediction or an approximation, the proportion of total number of students going for the concert = (12/49) = 0.245
Let x be the total number of students that attend the school.
This translates to the fact that
(0.245 × x) = 240
x = (240/0.245)
x = 979.6 = 980 to the nearest whole number.
Hope this Helps!!!
Answer: 613 students.
Step-by-step explanation:
Your question does not include the number of tickets sold as that will enable us to find out the number of students.
For that reason I will assume a number and you will then get a reference on how to solve this question.
Let us assume that 150 tickets were sold.
Now if 12 students out of a sample of 49 said they were going to attend and 150 tickets were sold, that means 150 tickets is the number of students that went from the general population.
This means that 12/49 should give us the same as 150/x with x being the total population of the school.
Solving for x,
12/49 = 150/x
12x = 150 * 49
12x = 7,350
x = 7,350 / 12
x = 612.5
x = 613 students.
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The jars of paint in the art room have different amounts of paint. The green paint jar is 4/8 full. The purple paint jar is 4/6 full. Which paint jar is less full?
(x + 1)2 + (y - 2)2 = 3
(x + 1)2 + (y + 2)2 = 9
(x + 1)2 + (y - 2)2 = 9
Answers
Answer:
last option is correct.
Step-by-step explanation:
We have been given that
Center: (-1,2)
Radius : 3 units
We know that the standard form of the circle is given by
Here, h = -2, k = 2, and r=3
Substituting these values in the above formula, we get
Therefore, last option is correct.
Answer D
(x+1)²+(y-2)²=9
Answers
The approximate number of bacteria after 7 hours is 1082.
We are given with the situation of bacteria multiplying into colonies.
We are given also with the function of B(t)= 4e^0.8t
where t is the time of multiplication.
What is the exponential function?
A function whose value is a constant raised to the power of the argument, especially the function where the constant is e.
We just have to substitute the given time of 7 hours to find teh final count.
The answer is approximately 1082.
Therefore the correct option is B.
To learn more about the exponential function visit:
#SPJ2
Answers
there are six possible outcomes
BGG, GBB, GBG, BGB, BBB, and GGG
therefore the probability of getting one boy and two girls is
also the probability of getting 3 girls is
B B B
G B B
B G B
B B G
G G G
B G G
G B G
G G B
Two girls and 1 boy odds probability = 3/8 (Those are the last 3 listed).
All 3 girls probability = 1/8
Answers
Answer:
f^-1(x)=1/2x+5
Step-by-step explanation:
y=2x-10
inteechange 'y' with 'x'
x=2y-10
make 'y' the subject
2y=x+10
divide by 2both sides
y=(x+10)÷2
y=1/2x+5
f^-1(x)=1/2x+5
Answers
Answer:
54
Step-by-step explanation:
2*54 = 108
3*54 = 162
5*54 = 270
Thank you!
Answers
The answer is: 83 + 12√35.
(2√(5) + 3√(7))(2√(5) + 3√(7))
2√(5)(2√(5) + 3√(7)) + 3√(7)(2√(5) + 3√(7))
2√(5)(2√(5)) + 2√(5)(3√(7)) + 3√(7)(2√(5)) + 3√(7)(3√(7))
4√(25) + 6√(35) + 6√(35) + 9√(49)
4(5) + 12√(35) + 9(7)
20 + 12√(35) + 63
20 + 63 + 12√(35)
83 + 12√(35)