After 4 new students joined a dass, the class had 32 students.
Which equation can be used to find n, the number of students in the class before the 4 new students joined?
(50 POINTS HELP)The manager of a restaurant chain wants to know how many times per month diners come to his restaurant. The table shows the number of visits in one month for three samples of 10 randomly chosen diners.
Answer the questions to find the means, compare the samples, and make a prediction.
1. What are the means of Samples 1 and 2? Show your work (what number did you use).
Write your answer in the space below.
The mean of sample 1 =
The mean of sample 2 =
2. What is the mean of Sample 3? Show your work (what number did you use).
Write your answer in the space below.
The mean of sample 3 =
3. Based on the data, would you predict that, in one month, the average diner would visit the restaurant fewer than 3 times, 3 or 4 times, or, about 4 times? Explain your reasoning.
Write your answer in the space below.
Answer:
Means
sample 1: 3.6
sample 2: 3.3
sample 3: 3.8
Step-by-step explanation:
Three or four times. All of these means are no less than three but no more than four this means that the average number of times is between three or four
a) The mean of the sample 1 = 3.6
b) The mean of the sample 2 = 3.3
c) The mean of the sample 3 = 3.8
d) In one month, the average diner would visit the restaurant 3 or 4 times
What is Mean?The mean value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values.
Mean = Sum of Values / Number of Values
Given data ,
Let the mean of the sample 1 be represented as M₁
Let the mean of the sample 2 be represented as M₂
Let the mean of the sample 3 be represented as M₃
where the number of visits to restaurant in one month is given by
Sample 1 = { 5 , 2 , 6 , 4 , 4 , 7 , 2 , 1 , 2 , 3 }
The number of visits = 10 visits
The total sum of sample 1 = 36
So , mean M₁ = 36/10 = 3.6
And , Sample 2 = { 2 , 6 , 1 , 3 , 4 , 5 , 2 , 1 , 5 , 4 }
The number of visits = 10 visits
The total sum of sample 1 = 33
So , mean M₂ = 33/10 = 3.3
And , Sample 3 = { 3 , 3 , 6 , 4 , 1 , 5 , 3 , 4 , 4 , 5 }
The number of visits = 10 visits
The total sum of sample 1 = 38
So , mean M₃ = 38/10 = 3.8
And , the average diner would visit the restaurant 3 or 4 times because the mean value of the three samples lies between 3 and 4
Hence , the mean of the sample is solved
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subtract 1x²-2x-6 from -6x + 5
3. double the number of cookies
PLEASE HELP ME ASAP
the number can't be 2222
Answer:
6 cookies
Step-by-step explanation:
7-5x+1 please help I’m supposed to find the like terms coefficients and constants pla
Answer:
coefficient is 5x and the constant is 1.
Step-by-step explanation:
simple math
ASAP PLZ HELP I will give brainlyleist
Answer:what is the questionStep-by-step explanation:
Use addition to solve the linear system of equations. (2x+y=5, 3x+2y=4)
Answer:
Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.
Point Form:
(6,−7)
Equation Form:
x=6,y=−7
Step-by-step explanation:
Can u plz help me with this !!!
Answer:
60
Step-by-step explanation:
10 + 5 = 15. 15/2 is 7.5. 7.5 times 8 is 60. The formula for the area of the trapezoid is (a+b)/2 x h.
Does anyone know, slope: 3/2 y-intercept -4?
Answer:
slope is 2/3.
Step-by-step explanation:
Question 1
What is another name for line k?
Answer:
FG i think... sorry if i am wrong
Step-by-step explanation:
If eight balls can be purchased for $48, what is the unit rate? *
$48/8 balls
$1/6 balls
$6/1 ball
2 balls/$12
Answer:
-_____-....... *snort laugh*
THATS WHAT SHE SAID!!!! XD XD XD
Step-by-step explanation:
Fatou has $150 in her bank account. She buys a bike for $200. What is Fatou’s account balance now? Show your work.
Answer:
Fatou owes the bank $50
Step-by-step explanation:
Usually when you owe a bank, you pay more then what you owe as intrest. I hope this helps! :)
Answer:
$-50
Step-by-step explanation:
Hope this helps! :)
20 POINTS!!!
b-74 = 12
explain your thinking
Answer:
86
Step-by-step explanation:
Step 1: Collect liketerms by switching to the terms tgat are alike to the other sideb=12+74
NOTE: while switching, the signs change to the oppositeStep 2: Add 12 + 74b=12+74
b=86
Answer:
B=86
Step-by-step explanation:
So first step is add 74 to 12 because if you subtracted b with 74 and to reverse that you have to add and 74+12=86 and that is what b equals
Which expression is equivalent to -19-11?
Answer:
option A is correct ans of this qn
Question 1 Hannan wants to estimate the number
of eets in a lase.
She sacenes and
was Soals
She returns the 50 eels to the lake.
The next day Hannah catches 400 ells.
of these 400 eels, 10 are ringed
Work out an estimate for the total number
of eels in the lake.
Answer:
2000 eels
Step-by-step explanation:
Let us represent the total estimate of the eels = x
She returns the 50 eels to the lake.
The next day Hannah catches 400 eels, of these 400 eels, 10 are ringed.
To solve the above question, we have the following:
50/x = 10/400
Cross Multiply
10x = 50 × 400
x = 50 × 400/10
x = 2000 eels
Therefore, the total estimate of the eels in the lake = 2000 eels
The front of Rosie's house is similar in shape to the front of Sparky's doghouse. The base of the doghouse is 6 feet and the height is 5 feet. If the height of Rosie's house is 27.5 feet, what is the length of its base? If necessary, round your answer to the nearest tenth.
1. 22.9 ft pick and awnser!! :)
2. 28.5 ft
3. 33 ft
4. 30 ft
Answer:
33feet
Step-by-step explanation:
If the base of the doghouse is 6 feet and the height is 5 feet, we can write;
6 feet base = 5 feet height
To get the length of the base if the height is 27.5feet
x feet base = 27.5 feet high
Divide both expressions
6/x = 5/27.5
5x = 6 * 27.5
5x = 165
x = 165/5
x = 33ft
Hence the length of its base will be 33feet
helpppppppppppppppp
Answer:
f(5) = -11
Step-by-step explanation:
Given that,
f(x) = 4-3x ....(1)
We need to find the value of f(5).
Put x = 5 in equation (1)
f(5) = 4-3(5)
= 4-15
= -11
So, the value of f(5) is equal to -11.
The difference between a number squared and 10 is 71 just right equation please don't solve
Answer:
x² - 10 = 71
that would be how the equation would be written out
plz plz somebody help me i will mark you has brainlest pls its due at 8:00 its like 7:43
Answer: She is incorrect because 0 + 0 = 0
Simplify each of the following equationS and solve for x
7 - 3x = -x + 1
Answer:
[tex]x=3[/tex]
Step-by-step explanation:
The first step is to isolate the variable on one side. In this case, let's try to bring x to the right. We do this by adding 3x to both sides, which gives us:
[tex]7 = 2x + 1[/tex]
Now, to have just the x term on the right, we subtract one from both sides of the equation, giving:
[tex]6 = 2x[/tex]
The last step is to divide both sides by two to leave x by itself. Thus, after dividing, we get:
[tex]3 = x[/tex]
Hope this helps!
Hurryy. I’ll mark brainliest or however you spell it lol
어, 난 수학을 잘 못하고 좀 게 으르니까 미안해
ILL MARK AS BRAINLESS PLS
Answer:
no because it's too expensive
(only my opinion tho)
Help Please! This is very important.
Show the steps please!
Answer:
1. [tex]f(x) = 6x + 14[/tex]
2. $14 flat fee
Step-by-step explanation:
In this case, [tex]f(x)[/tex] where [tex]x[/tex] is time (hour). $14 dollar stays constant when [tex]x = 0[/tex]. This is the flat rate fee.
Let's do a sanity check:
[tex]f(1) = 6(1) + 14 = 20[/tex]
[tex]f(1.5) = 3(1.5) + 14 = 23[/tex]
[tex]f(2) = 6(2) + 14 = 26[/tex]
Looks like A. is the answer.
2. Sammie has 3 feet of ribbon. She is making bows for her friends that each use of 1/3 of a foot
of ribbon. How many bows can she make from her three feet of ribbon?
Answer:
Sammy can make 9 bows.
Step-by-step explanation:
3 feet of Ribbon
1/3 for each bow
1/3 + 1/3 +1/3 = 3/3 or 1 so she can make 3 bows out of one foot of ribbon
so if you repeat this than you should get 9 bows out of three feet of ribbion.
Does the graph represent a function? Choose the correct descriptor.
Answer:
NO
Step-by-step explanation:
Thats an absolute value function, an absolute value function can not be negative
Answer:
Not a function.
Step-by-step explanation:
Do the vertical line test. If a line can go from top to bottom and touch the line twice, then it is not a function. A line like this would touch twice on this graph, so it is not a function.
In the scale used on a blueprint, 34
3
4
inch represents 4 feet. On the blueprint what is the length of a room with an actual length of 20 feet?
Answer:
67
Step-by-step explanation:
123£
How do you do ratios and proportion?
Answer: Ratios and Proportions - Proportions - In Depth. A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five."
HOPE THIS HELPS
What is the scale factor?
Answer:a scale facter is a scale of how much is one each side or corner and the shape
Step-by-step explanation:
Determine which equation is belongs to the graph of the limacon curve below.
y
2
-
-2
0
-2
[-5,5] by [-5,5]
a. r= 3-2 cos theta
b. r= 3- sine
C. r= 3 - cos
d. r = 2 - 2 cos theta
Please select the best answer from the choices provided
Answer:
C. r = 3 - cos theta
Step-by-step explanation:
The other user who answered was correct.
The equation is belongs to the graph of the limacon curve is r = 3 - cos [tex]\theta[/tex]
The correct option is C.
At θ = 180°, the value of r is positive, but just a fraction of the value at
θ = 0°. This eliminates choices 'b' and 'd'.
As, the equation of a horizontal cardiod is r= a ± a cos θ.
Here, from the figure we have horizontal cardiod.
Then, the equation is belongs to limacon curve is r = 3 - cos [tex]\theta[/tex].
Learn more about limacon curve here:
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Dear math why don't you grow up and solve your own problems
Answer:
LOL
Step-by-step explanation:
Answer:
Step-by-step explanation:
Yes