Answers
Answer:
A
Step-by-step explanation:
f(x) = -1/2x^4
Because x^4 is being multiplied n=by a negative number, the parabola will face down. That means it is between a and b. To figure out which graph it is, I look at points I could compare.
In graph A, when x=1, y < 1. In graph B, when x=1, y>1.
If i plug x= 1 into f(x), I get:
f(1) = -1/2(1)^4
f(1)=-1/2(1)
f(1)=-1/2
Because f(1) < 1, it is graph A.
Related Questions
Select the correct answer.
What is the simplified form of 3 squared 7 - 5 squared 7?
A. -2 squared 7
B. 2 squared 7
C. -14 squared
D. 15 squared 7
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Need the answer now!
Answers
Answer: -2√7
Step-by-step explanation:
2. The German Shepard actually weighs 28 pounds. Lisa thought the
dog weighed 44 pounds. What is the percent error?
Answers
Answer:
Lisa's percentage of error regarding the weight of the dog was 57.14%.
Step-by-step explanation:
Given that the German Shepard actually weighs 28 pounds, but Lisa thought the dog weighed 44 pounds, to determine what is the percent error the following calculation must be performed:
28 = 100
44 = X
(44 x 100) / 28 = X
4,400 / 28 = X
157.14 = X
157.14 - 100 = 57.14
Thus, Lisa's percentage of error regarding the weight of the dog was 57.14%.
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Answers
Answer:
180 minutes to cook 9lb turkey.
Step-by-step explanation:
Let the time taken to cook a 9lb turkey be x.
Using proportions,
6/120 = 9/x
6x = 120 x 9
6x = 1080
x = 1080/6
x = 180
Question
If a 6 lb turkey takes 120 minutes to cook, how long would a 9 lb. Turkey take to cook?
Solution
time taken by 6 lb. Turkey to cook = 120 minutes
time taken by 1 lb. Turkey to cook = (120/6 = 20) minutes
time taken by 9 lb. Turkey to cook = ( 20×9= 180 ) minutes
In a certain skyscraper, the elevators whisk you to a restaurant in the skyscraper at a speed of 500 feet in 40 seconds. If the restaurant is 300 feet up, how long will it take you to reach the restaurant by elevator?
Answers
Answer:
24
Step-by-step explanation:
Answer:
ur lame asl
Step-by-step explanation:
In the balcony of an auditorium, there are 20 seats in the first row, 22 seats in the second row and 24 seats in the third row. Assuming this pattern continues, write the explicit form of a sequence describing the number of seats in each row.
Answers
Answer:
is two more than the row before
Step-by-step explanation:
i hope i help\
Your engineering position requires frequent travel to the west coast, typically through Chicago. In reviewing historical airline data, you have determined that over the last year flights into Chicago on Southwest have been normally distributed, arriving an average of 72.3 minutes late with a standard deviation of 9.8 minutes. Yesterday, a travel agent informed you that Southwest recently changed their scheduling into Chicago and has improved arrival times. To confirm this claim, you collect the arrival times for a random sample of 47 Southwest flights arriving into Chicago, and find a sample mean of 70.7 minutes and a sample standard deviation of 7.1 minutes. Has there been a change in the mean arrival times on Southwest
Answers
Answer:
The given data does not support the submission that there has been a change in the mean arrival times on Southwest
Step-by-step explanation:
The known mean late arrival time, μ = 72.3
The known standard deviation in late arrival time, σ = 9.8 minutes
The number of flights in the sample, n = 47
The sample mean late arrival time, [tex]\overline x[/tex] = 70.7
The sample standard deviation late arrival time, s = 7.1
Using a significance level of 0.01
The null hypothesis is, H₀ ; μ = 70.7
The alternative hypothesis is, Hₐ ; μ ≠ 70.7
The test statistic is given as follows;
[tex]z=\dfrac{\bar{x}-\mu }{\dfrac{\sigma }{\sqrt{n}}}[/tex]
[tex]z=\dfrac{70.7-72.3 }{\dfrac{9.8 }{\sqrt{47}}} \approx -1.119290547[/tex]
∴ z ≈ -1.12
p-value = 2 × P(z < -1.12) = 2 × 0.13136 = 0.26272
Given that the p-value of 0.26272 is larger than the significance level, 0.05, we fail to reject the null hypothesis
Therefore, there is not enough statistical evidence to show that there has been a change in the mean arrival times on Southwest
1)Find the angle of elevation of the sun from the ground when a tree that is
14ft tall casts a shadow 16ft long. Round to the nearest degrees
Answers
Answer:
[tex]\theta=41.18^{\circ}[/tex]
Step-by-step explanation:
Given that,
The height of the tree, h = 14 ft
The height of the shadow, b = 16 ft
We need to find the angle of elevation of the sun from the ground. Let the angle be θ. We can use trigonometry to find it. So,
[tex]\tan\theta=\dfrac{P}{B}\\\\\tan\theta=\dfrac{14}{16}\\\\\theta=41.18^{\circ}[/tex]
So, the required angle of elevation of the sun is equal to [tex]41.18^{\circ}[/tex].
Find the start time.
Start time:____ P.M.
Elapsed time: 2 1/4 hr
End time: 4:44 P.M.
Answers
Answer:
2:29 PM
Step-by-step explanation:
Answer:
2:30
Step-by-step explanation:
I think sorry if I'm wrong
Suppose that a person who has recently helped start a company for the first time is randomly selected. The probability that the company will fail within 2 years is 0.3. Suppose we follow 14 start-ups (98 people) for 2 years and record the number of people whose company failed. Why is the binomial model inappropriate for finding the probability that at least 42 of these 98 people
Answers
Answer:
The Binomial model is inappropriate because the Trials are independent of each other
Step-by-step explanation:
Given data :
probability of a company started by a person failing with 2 years = 0.3
14 start-ups ( 98 people ) are followed for 2 years
The probability that at least 42 of these 98 people will fail in 2 years
Reason why the Binomial model is inappropriate for finding the probability that at least 42 of these 98 people will fail
The Binomial model is inappropriate because the Trials are independent of each other
Melissa's mother bought . pounds of strawberries to make strawberry
smoothies. She estimates that she will need of a pound of strawberries for
each smoothie. How many smoothies can she make with the strawberries she
bought?
Answers
Answer:
depends on the ammount
Step-by-step explanation:
Is 12/8 less than, equal to, or greater than 11/6?
Answers
Answer:
it's less than
Step-by-step explanation:
12/8 simplified is 3/2
11/6 cannot be further simplified
3/2<11/6
A company sells an insurance policy against losses incurred during travel for $15. 40,000 customers buy the insurance policy. The policy pays the full amount claimed up till $5,000. Most policy holders claim nothing, the rest either $500 or $5,000. Each customer has the following probabilities of claiming a certain amount for damages, independent of the other customers.
Claim $0 $500 $5,000
Probability 99% 0.8% 0.2%
Estimate the probability that the company makes a positive net profit across the 40,000 contracts.
Answers
(2x-3)/4 + (2x-5)/6= 1/2
Answers
Answer:
Step-by-step explanation:
making all terms have a common denominator of 12
(3(2x-3)+2(2x-5))/12=6(1)/12 now the 12s cancel out
3(2x-3)+2(2x-5)=6
6x-9+4x-10=6
10x-19=6
10x=25
x=2.5
The latest New York Times/CBS News Poll is based on telephone interviews conducted from Sept. 13 to Sept. 18 with 1664 adults around the United States. This poll has a margin of error (based on a 95% confidence) of /- 3%. Identify each of the following: a. Sample b. Parameter c. Statistic d. Population e. Confidence level f. Margin of error g. After the survey was completed it was found that the list of telephone numbers did not include several regions. It was also found that the areas omitted had a very large religious population and the results were biased. Is this a sampling or a non-sampling error
Answers
Answer:
a. Sample = 1664 adults
b. Parameter= % of poll based on telephone interview
c. Statistic = 66%
d. Population = American adult population
e. Confidence level= 95%
f. Margin of error = +/- 3%
g. Sampling Error
Step-by-step explanation:
The missing part of the question is
The quotation below describes an opinion poll conducted by CBS News and the New York Times. Oneof the questions asked was "Do you favor an amendment to the Constitution that would permitorganized prayer in public schools?" Sixty-six percent answered, "Yes."
a. Sample = 1664 adults
The number included in the sample
b. Parameter= % of poll based on telephone interviews
The sample chosen on the bases
c. Statistic = 66%
The statistic obtained after applying the formula etc.
d. Population = American adult population
The sample is chosen from the population
e. Confidence level= 95%
f. Margin of error = +/- 3%
g. Sampling Error
It is a sampling error because the areas omitted had a very large religious population and the results were biased.
The sample was not chosen from the areas omitted.
The capacities of 3 buckets are in the ratio 3:2:4. If the total capacity of the 3 buckets is 36 liters, find the capacity of the smallest bucket?
Answers
Answer:
8 liters
Step-by-step explanation:
3x+2x+4x=9x
36/9=x
x=4
2x= smallest bucket= 8
Write a polynomial function of least degree that has real coefficients, the following zeros: 1,5,3+i and a leading coefficient of 1
Answers
Answer:
no te entiendo
yo también la busco
Can someone help me? I’ll reward points + brainalist
Answers
Circumference = pi x diameter
The diameter of this circle is 18 so 22/7 x 18 = 56.57
The 1st flat-bar, or cross, or other operator means:
-9-(-7)
Answers
-9-(-7)
-9--7
-9+7
7-9
-2
---
hope it helps
In a study relating college grade point average to time spent in various activities, you distribute a survey to several students. The students are asked how many hours they spend each week in four activities: studying, sleeping, working, and leisure. Any activity is put into one of the four categories, so that for each student the sum of hours in the four activities must be 168. a) Consider the model GPA = β0 + β1study + β2work + β3leisure + β4sleep + u. Interpret the coefficient β1. Does it make sense to hold work, leisure, and sleep fixed, while changing study? b) Explain why this model violates Assumption MLR.3. c) How could you reformulate the model so that its parameters have a useful interpretation and it satisfies Assumption MLR.3?
Answers
Step-by-step explanation:
Given
GPA = NO + B1Study + B2work + B3leisure + B4sleep + u
1. No it makes no sense. There is an intercorellation between these explanatory variables. Changing study while holding the rest variables constant or fixed would not make sense. If study us changed then one or more of the other predictors should be changed so that they can still be equal to 168
2. Study is a perfect linear function of work, leisure and sleep. There is the problem of multicollinearity among these independent variables. One assumption of the MLR is no multicollinearity.
3. To reformulate model, you have to drop the variable that is having the issue. Let's say that leisure is dropped from the model. After this the assumption is satisfied.
GPA = b0 + B1Study + b2sleep + b3work + u
A rope 55 feet long is cut into two pieces. If one piece
is 23 feet longer than the other, what is the length, in
feet, of the shorter piece?
A. 2
B. 16
C. 23
D. 32
E. 51
Answers
Answer:
the answer is D
Step-by-step explanation:
55-23=32
Answer:
16
Step-by-step explanation:
shorter piece measures x
longer piece measures x +23
Together they measure 55 ft
x + (x+23) = 55
2x + 23 = 55
-23 = -23
____________________
2x = 32
x = 16
a² + b² = c²
a = x
b = x
c = 9√2
please help me find the value of x, asap!
Answers
Answer:
x = 9
Step-by-step explanation:
According to Pythagoras theorem a² + b² = c²
Given that
a = x
b = x
c = 9√2
Substitute'
x² + x² = (9√2)²
2x² = 81 * 2
x² = 81
x = √81
x = 9
Hence the value of x is 9
There are 28 students in a class. Sixteen of those students are boys. What percent of the class are girls? (Round to the nearest tenth)
Answers
Answer:
42.9% are girls
Step-by-step explanation:
In ΔRST, the measure of ∠T=90°, RS = 4.9 feet, and ST = 2.7 feet. Find the measure of ∠S to the nearest tenth of a degree.
Answers
Step-by-step explanation:
step 1. a diagram is important and can be uploaded. you will get a quicker answer with a diagram
step 2. triangle RST is a right triangle so we can use trigonometry to find <S
step 3. the adjacent side of <S is ST and the hypotenuse is RS so we will use cos
step 4. cosS = adj/hyp = ST/RS = 2.7/4.9
step 5. <S = 56.6° using inverse cos.
Answer:
42.43
Step-by-step explanation:
This is because you had to divbide by 3
(10p+10)+(8p−1) factored?
anyone know, please, i need this for school..
Answers
Answer:
the answer is
9(2p+1)
Answer:
18p +9
Step-by-step explanation:
Because you add the numbers in front of the p's (10+8) and then you add 10 plus -1, which is 9.
Hope this helps! Have a good day and remember to be tiger fierce!! :)
Suppose the derivative of f exist, find the equation of the tangent line.
Answers
Part (a)
Answers:
g ' (2) = 32y = 32x-44-----------------------------------
Work Shown:
Refer to figure 1 in the screenshot attached below.
========================================================
Part (b)
Answers:
h ' (2) = -2y = -2x+9-----------------------------------
Work Shown:
Refer to figure 2 in the screenshot attached below.
Correction:
The derivative for h should be
[tex]h(x) = f(x)*(x-1)^{-1}\\\\h'(x) = \frac{d}{dx}[f(x)*(x-1)^{-1}]\\\\h'(x) = \frac{d}{dx}[f(x)]*(x-1)^{-1}+f(x)*\frac{d}{dx}[(x-1)^{-1}]\\\\h'(x) = f'(x)*(x-1)^{-1}+f(x)*(-1(x-1)^{-2})\\\\[/tex]
I had a -2 in there instead of -1 as the coefficient.
You should find that h ' (2) = -2
That would then lead to y = -2x+9
The steps shown in figure 2 are effectively the same, just with different numbers of course.
What is the equation of the blue line?
Answers
Answer:
y = (1/2)x + 2
Step-by-step explanation:
it is a straight line so it will be in the form of y = mx + c
m = gradient, c = y intercept
Reading from graph it cuts the y-axis at 2,
so c = 2
to find gradient we can pick any 2 points on the line,
e.g (0,2) and (10,7)
gradient = (y1 - y2) / (x1 - x2) = (7 - 2) / (10 - 0)
= 1/2
so the equation is y = (1/2)x + 2
Using slope intercept formula, the equation of the blue line
y = (1/2)x + 2.
What is slope intercept?The slope intercept form is one of the form to represent" equation of the straight iine".
According to the question,
The graph intercept the y-axis at 2.
Slope intercept formula, y = mx + c where m = slope of the line, c = y- intercept of the line, x, y as variable.
From given, y-intercept, c = 2.
To find slope of the line take any two points on the line (0,2) and (10,7).
Formula to find slope of the line m = (y₁ -y₂)/(x₁ - x₂).
m = (2-7)/(0-10)= [tex]\frac{1}{2}[/tex]
Hence, the equation of the blue line y = (1/2)x + 2.
Learn more about Slope intercept form here
https://brainly.com/question/12425007
#SPJ2
(-3, 3), (1, 1), (0 -2), (1, -4), (5, -1) domain and range
is it a function plz help i aint no good at math
Answers
Answer:
not it is not aa function
Step-by-step explanation:
25) Which number is a common factor of 16 and 56?
Answers
Answer:
Factors of 16: 1, 2, 4, 8, 16
Factors of 56: 1, 2 , 4, 7, 8, 14, 28, 56
GCF: 8
Step-by-step explanation:
Which expression is equivalent to (6c+9)(6c-9)?
36c2-81
36c2 + 54c-81
o 12c
36c² +81
D Question 2
What’s the answer???
Answers
Answer:
36c2-81
Step-by-step explanation:
It's a difference of squares so you Florida it (FL) do first and last to get 36c2-81
QUICK does anyone know this? if so please answer i need to turn this in asap!
Answers
Answer:
10, 8, -5. Pls tell me if wrong i will retry. Im doing this mentally to be fast.
Step-by-step explanation:
A. 12 - |1 + -3 | = 12 - 2 = 10
B. 6 - -2 = 8
C. 18 -3/-3 = 15/-3 = -5
Answer:
14,8,-5
Step-by-step explanation:
1. 12-{1+(-3)}
12-{1(-3)} 1-3=-2
12-(-2) -×-=+
12+2
14
2. 6-{1+(-3)}
6-(1-3)
6-(-2)
6+2
8
3. 3×6+(-3)
________
-3
18-3
______
-3
15
_____
-3
=-5