Answer:
2^3 3^2
Step-by-step explanation:
Hence,
Mean=15.9
Median=16
Interquartile=14.5
On arranging our data in the increasing order we get the data set as:
5 5 8 8 13 14 16 16 19 22 23 27 31
Now we find the mean as:
Now, we know that the median is the central tendency of the data and lie in the middle of the data.
Hence, by looking at the data we see that the middle value of the data is 16.
Hence, Median=16.
Now, the lower set of data is:
5 5 8 8 13 14
Now, the lower quartile is calculated as:
The middle value of the lower set of data is:
8 8
Hence, the lower quartile is middle of 8,8.
i.e.
similarly the upper set of data is:
16 19 22 23 27 31.
Similarly the upper quartile is calculated as:
Hence, interquartile range (IQR) is calculated as:
Hence,
Mean=15.9
Median=16
Interquartile=14.5
B. 60 minutes
C. 30 minutes
D. 24 minutes
2. Annmarie can plow a field in 240 minutes. Gladys can plow a field 80 minutes faster. If they work together, how many minutes does it take them to plow the field?
A. 96 minutes
B. 160 minutes
C. 400 minutes
D. 480 minutes
3.Brody can fill a bowl with candy in 3 minutes. While Brody fills the bowl, Hudson takes the candy out of the bowl. With Hudson taking candy out of the bowl, it takes 5 minutes for Brody to fill the bowl.
Which of the following can be used to determine the amount of time it takes for Hudson to empty the bowl if Perry does not add candy?
A. 1 over 3 minus 1 over x equals 1 over 5
B. 1 over 3 minus 1 over 5 equals 1 over x
C. 1 over 5 minus 1 over x equals 1 over 3
D. 1 over 3 minus 1 over x equals x over 5
4. Leanne can clean a fish tank in 30 minutes. Karl can clean a fish tank in 20 minutes. If they work together, how many minutes does it take them to clean a fish tank?
A. 6 minutes
B.10 minutes
C. 12 minutes
D. 50 minutes
5.Genna can build a cabinet in 4 hours. Claude can build a cabinet in only 3 hours.
Which of the following can be used to determine the amount of time it would take for Genna and Claude to build a cabinet together?
A. 1 over 4 plus 1 over x equals 1 over 3
B. 1 over 4 plus 1 over 3 equals 1 over x
C. 1 over x plus 1 over 3 equals 1 over 4
D. 1 over 3 plus 1 over 4 equals x over 7
Answer:
1) option: A (120 minutes)
2) option: A(96 minutes)
3) option: A
4) option: C
5) option: B
Step-by-step explanation:
Ques 1:
Let the total work be '240'
filling pipe empty pipe filling+empty pipe
Time 40 min 60 min x
Efficiency 240/40=6 240/60= -4 6-4=2
The efficiency of empty pipe is negative as it lead to more time in filling.
Hence the time taken by both the pipe will be =120 minutes.
Hence, option A is correct.
Ques 2:
Let the total work be '960'
Annmarie Gladys Annmarie+Gladys
Time 240 min 160 min x
Efficiency 960/240=4 960/160=6 6+4=10
Hence, the time taken if they work together is:
Hence, option A is correct.
Ques 3:
Let the total work be '1'
Brody Hudson Brody+Hudson
Time 3 min x min 5 min
Efficiency 1/3 -1/x 1/5
the efficiency of Hudson is negative as he is taking out the candies.
since, efficiency of Brody+efficiency of hudson= efficiency of both
that means
Hence, option A is correct.
Ques 4:
Let the total work be '60'.
Leanne Karl Leanne+Karl
Time 30 min 20 min x
Efficiency 2 3 5
Hence, the time taken by both of them is:
Hence, option C is correct.
Ques 5:
Let the total work be '1'
Genna Claude Genna+Claude
Time 4 hrs 3 hrs x hrs
Efficiency 1/4 1/3 1/x
Since, efficiency of Genna+Efficiency of Claude=Efficiency of both
that means
Hence, option B is correct.
The true statement about the juan and lisa is Juan made a higher rate of pay than Lisa.
Juan made a lower rate of pay because he made less money.
This statement is false. Juan and Lisa made a similar rate of pay per hour ($14.80 and $14.00 respectively).
Lisa made a better rate of pay because she made more money.
This statement is false. The total earnings do not determine the rate of pay; the hourly rate does.
Lisa said she made a better rate of pay because her rate was $14 an hour.
This statement is false. Lisa's actual rate was $14.00 per hour, not $14.00 as stated.
Juan said he made a better rate of pay because he was paid $14.80 an hour.
This statement is true. Juan's hourly rate was $14.80, which is higher than Lisa's rate of $14.00 per hour.
To calculate the rate of pay, we divide the money earned by the hours worked.
Juan's rate of pay is $37.00 / 2.5 hours = $14.80 per hour.
Lisa's rate of pay is $42.00 / 3 hours = $14.00 per hour.
Therefore, Juan made a higher rate of pay than Lisa.
Answer: Juan said he made a better rate of pay because he was paid $14.80 an hour.
For such more question on rate
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The following question may be like this:
Juan worked 2.5 hours and earned $37.00. Lisa was paid $42.00 for 3 hours of work. Which of the following statements is true?
Juan made a lower rate of pay because he made less money.
Lisa made a better rate of pay because she made more money.
Lisa said she made a better rate of pay because her rate was $14 an hour.
Juan said he made a better rate of pay because he was paid $14.80 an hour.
Answer:
2. Juan worked 2.5 hours and earned $37.00. Lisa was paid $42.00 for 3 hours of work. Which of the following statements is true?
Lisa said she made a better rate of pay because her rate was $14 an hour.
Answer: Juan said he made a better rate of pay because he was paid $14.80 an hour.
Juan made a lower rate of pay because he made less money.
Lisa made a better rate of pay because she made more money.
Answer:
PLATO SAMPLE ANSWER:
If the center of the circle is to the right of the y-axis, C is negative and its absolute value increases as the center moves to the right. If the center is to the left of the y-axis, C is positive and its value decreases as the center moves to the right. D does not change when the center moves horizontally.
If the center of the circle is above the x-axis, D is negative and its absolute value increases as the center moves up. If the center is below the y-axis, D is positive and its value decreases as the center moves up. C does not change when the center moves vertically.
The values of C and D are not affected when the radius changes, as long as the center stays the same.
B) Y= -3
C) X= 3
D) X= -3
Answer:
Step-by-step explanation:
Relation between focus, vertex and directrix-
The vertex of the parabola is at equal distance between focus and the directrix. As any point on the parabola is equidistant from both focus and directrix.
And the directrix is always perpendicular to axis of symmetry and does not touch the parabola.
From the graph, the focus is at (3, 0) and axis of symmetry is x axis or y=0 line.
So the directrix will be horizontal and on the left of the parabola.
Hence, the equation of directrix of the given parabola will be x= -3