Answer:
never!
Step-by-step explanation:
it has infinite numbers
Which table shows a proportional relationship between x and y?
Answer: C or third choice
1 2 5 7
5 10 25 35
I hope this helps:
Suppose a normally distributed set of data with 4800 observations has a mean of 195 and a standard deviation of 12. Use the 68-95-99.7 Rule to determine the number of observations in the data set expected to be below a value of 231. Round your result to the nearest single observation.
Answer:
The number of observations in the data set expected to be below a value of 231 is of 4793.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 195
Standard deviation = 12
The normal distribution is symmetric, which means that 50% of the observations are above the mean and 50% are below.
Proportion of observations below 231:
231 = 195 + 3*12
So 231 is three standard deviations above the mean.
Of the 50% of observations below the mean, all are below 231.
Of the 50% of observations above the mean, 99.7% are between the mean of 195 and three standard deviations above the mean(231).
So, the proportion of observations below 231 is:
[tex]P = 0.5*1 + 0.5*0.997 = 0.9985[/tex]
Out of 4800:
0.9985*4800 = 4793
The number of observations in the data set expected to be below a value of 231 is of 4793.
Write each expression in exponential form.
Tim earns $31 after 2 hours, $46.5 after three hours,
and $62 after four hours. Write an equation that
represents the amount of money Tim makes.
Answer:
Equation: y = 15.5x
Step-by-step explanation:
Given that:
Time earns $31 for 2 hours
$46.5 for 3 hours
$62 for 4 hours
We will find unit rate first.
Unit rate = [tex]\frac{31}{2}[/tex] = $15.5 per hour
Now,
Let,
x be the number of hours
y be the total money earned by Tim
Total earning = Per hour rate * Number of hours
y = 15.5x
Hence,
Equation: y = 15.5x
(GIVING BRAINLIEST!!)
Choose the division equation that represents the fraction shown.
one fourteenth = ________
A) 1 ÷ 14 = ________
B) 14 ÷ 11 = ________
C) 13 ÷ 14 = ________
D) 14 ÷ 13 = ________
Answer:
your answer is gonna be "A" if you want to type 1/14 into the calculator.
The value of expression one fourteenth = A) 1 ÷ 14
How can we interpret the division?When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.
We need to find the expression of one fourteenth
A negative divided by a negative is positive, then;
one fourteenth = 1/14
Or
1 ÷ 14
Therefore, The value of 1 ÷ 14 = 1/14.
Learn more about division here:
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What is the product?
2.2 x 11.6
15.72
25.52
155.2
255.2
Answer:
25.52
Step-by-step explanation:
hope it helps!
......
Which graph represents the function f(x) =3/2(2)x?
Answer:
your answer is on the graph
Slope:
3
y-intercept:
( 0, 0)
x y
---------
0 0
1 3
Step-by-step explanation:
Which equation represents the graph shown?
A.) y=x
—
35
B.) y=x-35
C.) y=x+35
D.) y=35x
PLEASE HELP I DONT UNDERSTAND
Answer:
y=20x+25, this equation is linear, the rate of change is constant
Step-by-step explanation:
She starts with 25$, that doesn't change so its our constant. Let x represent each week. Each week she ears 20$
So, let y represent the total amount of money she has
y=20x+25, this equation is linear, the rate of change is constant
John was swimming for hour anda half hours at a speed of 2 miles per hour.How far did he swim?
Answer:
3 miles
Step-by-step explanation:
2+1=3 znnsndndnndjd
Hello there, I hope you are having a great day :) Your Question: John was swimming for an hour and a half hours at a speed of 2 miles per hour.How far did he swim? So the answer would be that 1 Hour = 2 miles and then do 1/2 hours = 2 divide 2 miles 1 and 1/2 hours = 2 + 1 Miles so 1 and 1/2 Hours = 3 miles so john swim 3 miles.
Hopefully that helps you :)
Using the formula A = 6s2, solve when s = 2?
Answer:
When s=2, A=24
Step-by-step explanation:
We are given the formula [tex]A = 6s^2[/tex]
We need to solve and find value of A , when s=2
So, putting value of s in the given formula we can find value of A
The formula given is:
[tex]A=6s^2\\Put\:s=2\\A=6(2)^2\\A=6(4)\\A=24[/tex]
So, by putting s= 2, We get A=24
Module 2 Lesson 1
Review
Alicia sells 20 bags of chips for $5 If she continues to sell
chips, how much would she make after selling 100 bags?
Answer:
$25 is the answer
Step-by-step explanation:
100/20= 5
5×5=25
Answer:
the correct answer is 400
Step-by-step explanation:
first to figure out the amount for 1 bag u divide 20 and $5 and get 4
then multiple 4 by 100 to $400
20/5=4
4x100=400
hope this helps
Can someone help i put a random answer
Write an expression for the perimeter of the house use the work you completed in parts A and B to guide you (the numbers in the photo is Part A and B)
Answer:
The total length of Valerie’s walls is (2.5 × 4) + (21.25 × 3) + 32.
The total length of Seth’s walls is 3.5 + (22.75 × 2) + 58.
To find the expression for the perimeter of the house, add Valerie’s expression to Seth’s:
(2.5 × 4) + (21.25 × 3) + 32 + 3.5 + (22.75 × 2) + 58.
Step-by-step explanation:
its the platho answer so change it a bit
If Brenda has 10 math problems to solve and she can solve one math problem per minute how long will it take her to solve all 10 problems
Please help, I’m doing super bad In math and I need help
Answer:
It is A. Angle 7 and Angle 10
there are 30 students in Ms. jones's class. if 10% of the students are left-handed, how many students are left-handed? explain
Answer:
3
Step-by-step explanation
So, you need to find 10% of 30
10/100 (fraction form of 10%) x 30
of = multiply
10/100 x 30 = 300/100 = 3
HELP PLEASEEEE!!! URGENT
Answer:
correct option is 2 n please thanks me and also votes
456000 has been rounded to the nearest thousand. What is the smallest possible number this could have been
Answer:
457,000 is your answer to the question
Step-by-step explanation:
Select the correct answer from each drop-down menu. f(x) = x2 − 8x + 15 g(x) = x − 3 h(x) = f(x) ÷g(x) h(x) = . The domain of h(x) is U .
Answer:
h(x) = x-5 . The domain of h(x) is (- infinity,3) U (3, infinity)
Step-by-step explanation: plato/edmentum
The domain of h(x) is (-∞ , 3 ) ∪ (3,∞) .
What is domain?The domain is all x-values or inputs of a function and the range is all y-values or outputs of a function. When looking at a graph, the domain is all the values of the graph from left to right. The range is all the values of the graph from down to up.
According to the question
f(x) = [tex]x^{2}[/tex] − 8x + 15
g(x) = x − 3
h(x) = f(x) ÷ g(x)
i.e,
h(x) = [tex]\frac{ x^{2} -8x + 15}{x-3}[/tex]
now,
x ≠ 3
[tex]h(x) = \frac{(x-5)(x-3)}{(x-3)}[/tex]
so,
Domain or x ∈ (-∞ , 3 ) ∪ (3,∞)
Hence, The domain of h(x) is (-∞ , 3 ) ∪ (3,∞)
To know more about domain here:
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10
9. Solve for x.
(9x + 1)
88
PLEASE HELP! will mark brainliest
Answer:
(9x+1)=10x
Step-by-step explanation:
(-2x)^4 simplified??
Answer:
16x^4
Step-by-step explanation:
first compute -2 to the 4th power, then x to the 4th power
(-2)^4= positive 16 because of parentheses and the exponent(4) is even
(x)^4 is just x^4
so multiply 16 and x^4 together and you get 16x^4
Answer:
Step-by-step explanation:
here you go mate'
step 1
(-2x)^4 equation
step 2
(-2x)^4 put (-2x) in four places
(-2x)(-2x)(-2x)(-2x)
step 3
(-2x)(-2x)(-2x)(-2x) multiply
answer
16x^4
The following are the weights of 10 young dogs, in pounds: 7, 5, 11, 8, 14, 19, 16, 15, 13, 27 What proportion of the measurements lie in the interval LaTeX: \bar x \pm 2sx
Answer:
0.9
Step-by-step explanation:
Given that data:
x : 7, 5, 11, 8, 14, 19, 16, 15, 13, 27
Mean = Σx / n
Using calculator :
Mean (m) = 13.5
Standard deviation (s) = 6.433
Proportion that lies in mean ± 2s
Lower = Mean - 2s
13.5 - 2(6.433) = 0. 632
Upper = Mean + 2s
13.5 + 2(6.433) = 26.376
Mean ± 2(sd) = (0.632, 26.276)
The only digit from the data which falls outside the defined range = 27
Proportion within interval = 9 / n
Proportion which falls within range = 9/10 = 0.9
2k-6-7+3k=-48 it is a multi step equation
Answer:
k = -7
Step-by-step explanation:
2k+3k-13=-48
5k - 13 = -48
5k = -48 + 13
5k = -35
k = -7
Connor drove 340 miles on 8 gallons of gas. How many miles did his car travel per gallon of gas?
Answer:
42.5
Step-by-step explanation:
calculatour
PLZ HELP DONT MESS AROUND I NEED THIS
One-third times the difference of a number and 5 is Negative two-thirds. Which equation best shows this?
One possible first step in solving the equation in the above problem is to
.
The value of the number is
.
Answer:
I did it
Step-by-step explanation:
The first one is 1/3(n-5)= -2/3
the second is distribute 1/3
and the third one is 3
Answer:
1:
1/3(n – 5) = -2/3
2:
Distribute 1/3
3:
3
Step-by-step explanation:
Ken used 1 3/8 cupe of walnuts and 1 3/4 cups of raid in to make trail mix did he make
Answer:
3 1/8
Step-by-step explanation:
Add the 1 3/8 cups of walnuts to the 1 3/4 cups of raisins. You will have to make your denominators the same to add the fraction.
1 3/8. 1 3/8
+1 3/4. 3 x 2 = 6. +1 6/8
_____ 4 x 2 = 8. ______
2 9/8 reduce 3 1/8
Reggie wanted to compare his grades with the national averages. Which measure of central tendency would be the best for Reggie to use? A. the mean B. the median C. the range D. none of these measures
Answer:
D
Step-by-step explanation:
The mean is usually the best measure of central tendency to use when your data distribution is continuous and symmetrical, such as when your data is normally distributed.
Option (A)
Which measure of central tendency would be to compare?
Typically the trimean and trimmed mean will fall between the median and the mean, although in this case, the trimmed mean is slightly lower than the median. The geomtric mean is the lower than all measures except the mode. Measures of central tendency for the test scores.
What is the value of the
underlined digit?
56
help me pls just label answers
nevermind