Answers
Answer:
domain: -2 < x < 4
range: -∞ < y < 9
Step-by-step explanation:
domain: because the domain is all of the x-values, just look for the furthest one to the left, which is -2, and then look for the one that is furthest to the right, it being 4.
range: because the quadratic function has the two arrows continuing downwards, toward the negative portion of the graph, it would be -∞. Then look for the maximum of the graph, which would be considered the most highest part of the graph, which is seen on the graph as 9.
Related Questions
The baggage handling services of On-Time Airlines is interested in how many baggage handlers they need on duty at various time of the day to ensure that passengers do not wait an unreasonable amount of time for their baggage. An airport executive performed a study and found that there is a correlation between the number of passengers arriving at given times and the number of baggage handlers needed. She sampled various times during the day and different days of the week including weekend. She recorded the number of passengers arriving within any 1-hour time block. The computer output from the regression equation analysis is shown below
Answers
The baggage handling services of On-Time Airlines are conducting a study to determine the correlation between the number of passengers arriving at a given time and the number of baggage handlers needed.
The study is performed by an airport executive who samples different times during the day and different days of the week including weekends. The main objective is to ensure that passengers do not wait an unreasonable amount of time for their baggage.
The study records the number of passengers arriving within any 1-hour time block. The data collected is then analyzed using a statistical technique called regression equation analysis, which is a method to estimate the strength and direction of the relationship between two or more variables.
The outcome or the result of the analysis is not provided in the given information.
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What percent of 28 is 77?
Answers
Answer:
36.3636364%
or 36.36
Step-by-step explanation:
what is 1/3 plus 4/5
Answers
You can round it and then it will be 1.13
The rounding will be that as the number after the point is not 5 or above
Answer:
1.13333333333
Step-by-step explanation:
sorry if it’s wrong!
The population of a city was 10,000 in 2010. The population increase at an annual rate of 2.5% per year. Is the growth model function that represents the population of the city linear?
Answers
Answer:
The growth model that represents the population of this city is not linear--it is exponential:
\(f(t) = 10000( {1.025}^{t} )\)
\(t = 0 \: represents \: 2010\)
Leon older brother is 4 and 3/4 feet tall Leon is 1/3 foot shorter than his brother how tall is Leon
Answers
Answer:
4 5/12 feet tall
Step-by-step explanation:
All you have to do is subtract 1/3 from 4 and 3/4 in order to get this answer.
Answer:
Leon is 53/12 feet or 4 & 5/12 or 4.4167 (same answer different forms)
Step-by-step explanation:
Leon older brother is 19/4 feet tall or 57/12.
Leon is 1/3 or 4/12 foot shorter than his brother.
57/12-4/12= 53/12
1) (b + a) = 4; use a = 1 and b = 3
2) c(b + b); use b = 1 and c = 5
3) 4+ pm; use m = 4 and p =3
4) 5+ pm; use m = 4 and p = 2
5) m(p + 2); use m = 5 and p = 2
6) h+j²; use h = 1 and j = 4
7) y-(x - 5); use x = 5 and y = 6
8) 4xy; use x = 5 and y = 2
9) n(p + 3); use n = 2 and p = 2
10) y +x+x; use x = 3 and y=5
11) 6+ a-b; use a = 4 and b = 4
Answers
The equations will be solved by putting the values of the variables in the bracket.
How to calculate the values?1. (b + a) = 4; use a = 1 and b = 3
( 1 + 3) = 4
2) c(b + b); use b = 1 and c = 5
5(1 + 1)
= 5 × 2 = 10
3) 4+ pm; use m = 4 and p =3
= 4 + (4 × 3)
= 4 + 12
= 16
4) 5+ pm; use m = 4 and p = 2
= 5 + (2 × 4)
= 5 + 8
= 13
5) m(p + 2); use m = 5 and p = 2
= 5(2 + 2)
= 5 × 4
= 20
6) h+j²; use h = 1 and j = 4
= 1 + 4²
= 17
7) y-(x - 5); use x = 5 and y = 6
= 6 - (5 - 5)
= 6 - 0
= 6
8) 4xy; use x = 5 and y = 2
= 4 × 5 × 2
= 40
9) n(p + 3); use n = 2 and p = 2
= 2(2 + 3)
= 10
10) y +x+x; use x = 3 and y=5
= 5 + 3 + 3
= 11
11) 6+ a-b; use a = 4 and b = 4
= 6 + 4 - 4
= 6
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A coral reef grows 0.14 m every week. How much does it grow in 13 weeks?
Answers
Answer: 1.82 m
Step-by-step explanation:
Ratios
0.14 n 0.14 x 13 = 1.82
1. 13 1.82/1 = 1.82
A rectangle has an area of
72 square centimeters. The width of the rectangle is 8 centimeters.
Answers
Answer:
\(\boxed{\bf length=9\; cm}\)Step-by-step explanation:
Given:-
Area = 72
width = 8
Area = length × width
\(\bf 72=length \times 8\)
Divide 72 / 8:-
\(\bf length=9\; cm\)
If you're asking to find the length, this's your answer.
____________________________
Hope this's what you're looking for!
The average natural gas bill for a random sample of 21 homes in the 19808 zip code during the month of February was $311.90 with a sample standard deviation of $51.60. Based on the sample, construct a 90% confidence interval for the true mean natural gas bill for homes in the 19808 zip code area in February.
Answers
Answer:
The 90% confidence interval for the true mean natural gas bill for homes in the 19808 zip code area in February is between $292.48 and $331.32
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 21 - 1 = 20
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 20 degrees of freedom(y-axis) and a confidence level of \(1 - \frac{1 - 0.9}{2} = 0.95\). So we have T = 1.7247
The margin of error is:
\(M = T\frac{s}{\sqrt{n}} = 1.7247\frac{51.60}{\sqrt{21}} = 19.42\)
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 311.9 - 19.42 = $292.48
The upper end of the interval is the sample mean added to M. So it is 311.9 + 19.42 = $331.32
The 90% confidence interval for the true mean natural gas bill for homes in the 19808 zip code area in February is between $292.48 and $331.32
199228384838393940404093499494+18283764656453=? Pls help
Answers
Answer:
the answer is =1.9922838483839398e+29
Step-by-step explanation:
hoped I helped:)
Answer:
1.9922838e+29
Step-by-step explanation:
is this a joke- anyways hope I helped :)
Diane, Sam, and Boris served a total of 54 orders Monday at the school cafeteria. Diane served 6 fewer orders than Sam. Boris served 2 times as
many orders as Sam. How many orders did they each serve?
Number of orders Diane served:
Number of orders Sam served:
Number of orders Boris served:
Answers
Answer:
Let's denote:
- The number of orders Diane served as `D`
- The number of orders Sam served as `S`
- The number of orders Boris served as `B`
From the problem, we know:
1. `D + S + B = 54` (the total number of orders they served)
2. `D = S - 6` (Diane served 6 fewer orders than Sam)
3. `B = 2S` (Boris served 2 times as many orders as Sam)
We can substitute equations 2 and 3 into equation 1 to solve for the variables:
Substitute `D` and `B` in equation 1:
`(S - 6) + S + 2S = 54`
Combine like terms:
`4S - 6 = 54`
Add 6 to both sides:
`4S = 60`
Divide by 4:
`S = 15`
Now that we know `S = 15`, we can find `D` and `B` by substituting `S` into equations 2 and 3:
`D = S - 6 = 15 - 6 = 9`
`B = 2S = 2 * 15 = 30`
So, Diane served 9 orders, Sam served 15 orders, and Boris served 30 orders.
Bobby, Jessy, Carl, and Andrea are working a shift at the concession stand during their school football game. The football game has four quarters, and each person works one of the quarters.
Answers
Using the arrangements formula, it is found that there are 24 ways to arrange the people as such one works each quarter.
What is the arrangements formula?The number of possible arrangements of n elements is given by the factorial of n, that is:
\(A_n = n!\)
In this problem, 4 people will be arranged, hence:
\(A_4 = 4! = 24\)
Hence, they can be arranged in 24 ways.
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What is the quoteint of 2/3 in 2/9
Answers
Explanation:
2/3 divided by 2/9
2/3 times 9/2
= 3
In art class students are mixing blue and red paint to make purple paint. Arturo mixes 11 cups of blue paint and 5 cups of red paint. Addison mixes 8 cups of blue paint and 3 cups of red paint. Use Arturo and Addison’s percent of blue paint to determine whose purple paint will be bluer.
Answers
Addison's purple paint will be bluer.
How do you determine whose paint is bluer?To determine the percent of blue paint in Arturo's mixture, divide the amount of blue paint (11 cups) by the total amount of paint (11 cups + 5 cups) and multiply by 100. This gives you 68.75%.
To determine the percent of blue paint in Addison's mixture, divide the amount of blue paint (8 cups) by the total amount of paint (8 cups + 3 cups) and multiply by 100. This gives you 72.73%. Since 72.73% is greater than 68.75%,
Therefore, the correct answer is as given above. It can then be concluded that Addison's purple paint will be bluer.
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find slope of the graph 9x-3y=15
Answers
\(y = mx + b\)
where m = slope and b = y-intercept.
What we have to do is to make the y-term as the subject of equation.
\(9x - 3y = 15 \\ 9x - 15 = 3y \\ \frac{9x - 15}{3} = y\)
Simplify\( \frac{9x}{3} - \frac{15}{3} = y \\ 3x - 5 = y \\ y = 3x - 5\)
From y = mx+b, the slope is 3.
Answer\( \large \boxed {slope = 3}\)
3. Mojirayo has a coin jar containing nickels and dimes worth a total of$3.65. The equation 0.05n + 0.1d = 3.65 is one way to represent thissituation. Which equation is equivalent to the equation 0.05n + 0.1d + 3.65?A. 5n + d = 365B. 0.5n + d = 365C. 5n + 100 = 365D. 0.05d + 0.1n = 365
Answers
The given equation,
0.05n+0.1d=3.65
Now solving,
\(\frac{5}{100}n+\frac{1}{10}d=\frac{365}{100}\)Furthur simplifying,
\(5n+10d=365\)The answer is C.5n+10d=365
John has $5 in his bank account when he gets a job. He begins making $109 a day. A student found that the equation that represents this situation is y = 5x + 109.
Answers
Answer:
the student answer is incorrect
Correct answer: y = 109x + 5
Step-by-step explanation:
He STARTS with $5, which means it says aside. Since he REPEATEDLY recieves $109 EVERY day, it is as 109x because you don't know how much days there are. So the correct equation is y = 109x + 5.
Hope this helps!
Have a nice day!
|3d-3n|-4 if n=2 and d=3
Answers
Answer:
-1
Step-by-step explanation:
\(|3d-3n|-4\)
Once we have an absolute value, we know that
\(|3d-3n| \geq 0\)
\(\text{For }n=2 \text{ and } d=3\)
\(|3(3)-3(2)|-4\)
\(|9-6|-4\)
\(|3|-4\)
\(3-4\)
\(-1\)
What is the correct maximum or minimum for the function f(x) = -|x-2| + 1
Answers
Answer:
1
Step-by-step explanation:
The graph is shifted up one unit
Answer:
f(max) = 1Step-by-step explanation:
Given function:
f(x) = - |x - 2| + 1Since the value of the |x - 2| can be zero or positive only, the graph has its maximum at x = 2:
f(2) = 0 + 1 = 1Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.3 years with a standard deviation of 1.1 years.
Step 1 of 2: If a sampling distribution is created using samples of the ages at which 35 children begin reading, what would be the mean of the sampling distribution of sample means? Round to two decimal places, if necessary.
Answers
Answer:
The mean of the sampling distribution of sample means is equal to the population mean, which is 5.3 years.
give thanks for more! your welcome!
Step-by-step explanation:
Find the side length of a cube with a volume of 141 f3 If necessary, round your answer to the nearest tenth.
Answers
The side length of the cube is 5.6 feet (rounded to the nearest tenth).
We can calculate the side length of a cube with a volume of 141 cubic feet using the formula for cube volume , which is \(V = s^3\), where V is the volume and s is the side length.
We can calculate s by taking the cube root of both sides of the equation:
\(s = (V)^{(1/3)\)
Substituting V = 141, we get:
\(s = (141)^{(1/3)\)
By using a calculator to evaluate this expression, we may determine:
s ≈ 5.6
As a result, the cube's side length is roughly 5.6 feet (rounded to the closest tenth). This indicates that if we increase the side length by three, it will become longer. (\(s^3\)), we will get the volume of the cube, which is 141 cubic feet.
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Please help me
Find the value of x.
Answers
Answer:
d: x = -8
Step-by-step explanation:
40 + 65 + x + 83 = 180 (sum of internal angles of a triangle)
x = 180 - 40 - 65 - 83
x = -8
Given that P(A)=0.8 and P(A and B)=0.6, if A and B are independent events, what is the probability of event B?
Answers
Answer:
0.2 I think
Step-by-step explanation:
A game has a spinner with 8 equal- sized sections. The results of 450 spins are shown in the table. Part Frequency 1 58 2 52 3 39 4 77 5 50 6 43 7 60 8 71
For Which Number is the number difference between the theoretical probability and experimental probability greatest?Explain
Answers
The theoretical probability of each section is 1/8, since there are 8 equal-sized sections on the spinner. To find the theoretical frequency, we multiply the theoretical probability by the total number of spins:
Theoretical frequency = (1/8) x 450 = 56.25
We can then calculate the experimental probability for each section by dividing the frequency by the total number of spins:
Experimental probability = Frequency/Total number of spins
Using this formula, we can calculate the experimental probabilities for each section:
Part 1: Experimental probability = 58/450 ≈ 0.129
Part 2: Experimental probability = 52/450 ≈ 0.116
Part 3: Experimental probability = 39/450 ≈ 0.087
Part 4: Experimental probability = 77/450 ≈ 0.171
Part 5: Experimental probability = 50/450 ≈ 0.111
Part 6: Experimental probability = 43/450 ≈ 0.096
Part 7: Experimental probability = 60/450 ≈ 0.133
Part 8: Experimental probability = 71/450 ≈ 0.158
To find the number with the greatest difference between the theoretical and experimental probability, we can calculate the difference between the two probabilities for each section:
Part 1: |0.125 - 0.129| = 0.004
Part 2: |0.125 - 0.116| = 0.009
Part 3: |0.125 - 0.087| = 0.038
Part 4: |0.125 - 0.171| = 0.046
Part 5: |0.125 - 0.111| = 0.014
Part 6: |0.125 - 0.096| = 0.029
Part 7: |0.125 - 0.133| = 0.008
Part 8: |0.125 - 0.158| = 0.033
As we can see, the greatest difference between the theoretical and experimental probability is for Part 4 with a difference of 0.046. This indicates that the experimental frequency for Part 4 is significantly different from the theoretical frequency, which may suggest that the spinner is biased towards that section.
Find the slope of the line that passes through:
(-12,-5) and (0, -8)
Answers
Use quiver to create a clear slope field for the differential equation.
dy/dt= sin(y) + sin(t)
Answers
Answer:
The Matlab code along with the plot of slope field for the given differential equation is provided below.
Step-by-step explanation:
Matlab quiver function:
The Matlab's quiver function may be used to plot the slope field lines for any differential equation.
The syntax of the function is given by
quiver(x, y, u, v)
Where matrices x, y, u, and v must all be the same size and contain corresponding position and velocity components.
Matlab Code:
[t,y] = meshgrid(0:0.2:2, 0:0.2:2);
v = sin(y) + sin(t);
u = ones(size(v));
quiver(t,y,u,v)
xlabel('t')
ylabel('y(t)')
xlim([0 2])
ylim([0 2])
Output:
The plot of the given differential equation is attached.
A marketing research company desires to know the mean consumption of milk per week among people over age 30 . They believe that the milk consumption has a mean of 3.5 liters, and want to construct a 85% confidence interval with a maximum error of 0.07 liters. Assuming a standard deviation of 1.4 liters, what is the minimum number of people over age 30 they must include in their sample? Round your answer up to the next integer.
Answers
The minimum number of people over age 30 they must include in their sample is: 829 people
How to calculate the standard error?The formula for calculating the standard error is:
SE = μ ± Z(σ/√N)
Where:
σ = the standard deviation,
N = the sample size,
Z = the Z value for the percent confidence level desired.
We must find the Z value, at the 85% confidence level from a Cumulative Standardized Normal table for the 99% confidence level. This gives us the value of Z = 1.44
σ = 1.4 liters
N = 0.07
Thus:
0.07 = 1.44(1.4/√N)
0.07/1.44 = 1.4/√N
1.4/√N = 0.04861
√N = 1.4/0.04861
N = (1.4/0.04861)²
N = 829 people
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Need reasons answer for this please!
Answers
Step-by-step explanation:
1.Given .
2.Being vertically opposite angle.
3.Because sum of all interior angle of a triangle is always 180°.
4.From the statement of 3 number.
5.Because angle 4 = angle 3 and angle 6= angle 1 .
6.(suppose ,< is angle sign) solving this equation,
m<1 + m<2+ m<3 = m<3 + m<5 + m<1
Based on the table, what is the best prediction of the weight of a person of 62 inches?
Answers
Answer:
128lbs
Step-by-step explanation:
60% of 120lbs+40% of 140lbs
72+56
128
Does anyone know how to get free answers? I ran out, I have a lot of points I just need more free answers again
Answers
Answer: I believe that by helping or answering others you can get get questions, but I do know there is a limited amount of questions being able to ask before paying monthly. Hope this helps
Answer:
What you have to do is answer peoples question to gain more
Step-by-step explanation: