Answer:
2388.16 cubic inches
Step-by-step explanation:
Cylinder: 452.16
Rectangular prism: 1936
Answer:
D
Step-by-step explanation:
choice A is not guaranteed since the values varied from 0 to 7.
choice B seems alright, but doesn't include about or anything about the long run.
choice C is incorrect because 50% are less than 3.12 and 50% are greater than 3.12.
choice D seems pretty good, since it says average, long run, approach, etc.
choice E is incorrect because it says "will be". It is not definite.
Final answer:
The mean of 3.12 represents the average number of days per week that members are expected to visit the fitness center.
Explanation:
The mean of the random variable X, which represents the number of days per week that members visit a fitness center, is 3.12. This means that on average, members go to the fitness center about 3.12 days each week when considering all the members surveyed. It's an overall trend that indicates the central tendency or the 'typical' value that we would expect in this data set. It is calculated by multiplying each number of visit days by its relative frequency and adding all these products together, then dividing by the total number of members.
Answer:
Line PQ. Not enough Info for the Plano tho.
Step-by-step explanation:
Look at the 2 points, and thats the name of the line.
3x + 4y = −20
A) multiply the first equation by 4 and subtract the second equation
B) multiply the first equation by −4 and add the second equation
C) add 8 times the first equation and −2 times the second equation
D) multiply y by 4 in the first equation and subtract the second equation
Answer:
Option D) multiply y by 4 in the first equation and subtract the second equation
Step-by-step explanation:
we have
2x+y=-10 ----> first equation
3x+4y=-20 ---> second equation
Verify each case
case A) multiply the first equation by 4 and subtract the second equation
so
(2x+y)*4=-10*4 ------> 8x+4y=-40
[8x+4y=-40]-[3x+4y=-20] -----> 5x=-20 -----> x=-4
This step is correct
case B) multiply the first equation by -4 and add the second equation
so
(2x+y)*-4=-10*-4 ------> -8x-4y=40
[-8x-4y=40]+[3x+4y=-20] ----->-5x=20 -----> x=-4
This step is correct
case C) add 8 times the first equation and −2 times the second equation
so
(2x+y)*8=-10*8 ------> 16x+8y=-80
(3x+4y)*-2=-20*-2 ----> -6x-8y=40
[16x+8y=-80]+[-6x-8y=40] ----->10x=-40 -----> x=-4
This step is correct
case D) multiply y by 4 in the first equation and subtract the second equation
so
2x+4y=-10
[2x+4y=-10]-[3x+4y=-20] -----> -x=-10+20 -----> x=-10
This step is incorrect
NOT produce a system with the same solution
Answer:
-28=7(x-7)
First expand the terms on the right side
That is
-28 = 7x - 49
Group like terms
7x = -28 + 49
7x = 21
Divide both sides by 7
7x/7 = 21 /7
x = 3
Hope this helps
Answer:
so x=3
Step-by-step explanation:
-28=7(x-7)
opening the brackets by multiplying
-28=7x-49
adding 49 on both sides
-28+49=7x-49+49
21=7x
dividing 7 on both sides
21/7=7x/7
x=3
i hope this will help you :)