Please help, ACT Is close and I need help with this kind of question.
If x^2 - y^2=56 and x-y=8, what is the value of x+y?
A- 10, b-8, c-9 d-7
Answer:
if you just set x² - y² -56 = 0 then square root x² - y² -56 the answer would be x- y -8 . then move 8 to the right. the final answer is x-y = 8
Question
A police officer claims that the proportion of drivers wearing a seat belt in a certain area is less than 40%.
To test this claim, the officer collects a random sample of 80 drivers and monitors if the driver was wearing a seat belt.
From this sample of 80 drivers, the police offers observes that 34 were wearing seat belts.
Assume the conditions needed to conduct a one sample proportion test are satisfied.
The setup for the null and alternative hypothesis is as follows:
H : p = 0.40; H, :p < 0.40, which is a left-tailed test.
Compute the test statistic and p-value for this Hypothesis test using Excel and round your answers to 3 decimal places.
Answer:
0.456
0.324
Explanation:
The null and alternative hypothesis :
H0 : p = 0.40; HA :p < 0.40
Test statistic :
(Ph - P) / sqrt[(p*(1-p))/n]
Ph = X / n
X = 34 ; n = sample size = 80
Ph = 34 / 80 = 0.425
(0.425 - 0.4) / sqrt[(0.4(0.6)) / 80]
0.025 / sqrt(0.003)
0.025 / 0.0547722
Test statistic = 0.4564359
Test statistic = 0.456
Using the P-value from Zscore calculator :
Significance level of 95% ; one tailed
Z statistic value = 0.456
P value = 0.324195
= 0.324 ( 3 decimal places)
Answer:
test statistic=0.456 p value=0.676
Explanation:
(1) Farmer Ben has only ducks and cows 21 in total. He can’t remember how many of each he has. He knows
that the animals have a total of 52 legs. Assuming that each animal has all legs intact and no extra
limbs, how many of each animal does farmer Ben have? Draw a clear diagram to answer this question.
(2) On a merry-go-round, 12 horses are evenly spaced on the outside perimeter. Abe is opposite to the first
horse. It takes 4 seconds for the fourth horse to reach Abe. How long will it take the merry-go-round to
go around once? Draw a clear diagram to answer this question. Make a Diagram and solve this problem.
(3) Charmin’s daughter has $6.00 she wants to spend on a comic books and superhero cards. Comic books
cost 75 cents each, and deluxe packages of superhero cards cost $1.50 each. List all the ways she can
spend all of her money on comic books, superhero cards , or both.
(4) In how many ways can one add only three positive even numbers and get 22? Make a systematic list
and show all the possibilities.
Can somebody plzz help me on these for questions i really need to pass this and show work
Answer:
Answer of #1
5 Cows and 16 Ducks
Explanation:
4x + 2(21-x) = 52
4x + 42 - 2x = 52
2x + 42 = 52
- 42 - 42
2x = 10
x = 5 Number of cows
21 - 5 = 16 ducks.
Checking: The 5 cows have 5 x 4 = 20 legs. The 16 ducks have 16 x 2 = 32 legs.
32 + 20 = 52
How much principal must be
invested to earn $36 in 1/2 a year
at an interest rate of 8%?
Answer:
Simple interest: $70.56
Annually compounded Interest: $90.65
Explanation:
what is two plus two
Answer: 4
Explanation:
Choose THREE agricultural activities that humans perform to minimize their impact on climate change.
A
drain wetlands
B
plant cover crops
C
leave land untouched
D
use additional fertilizers
E
breed drought tolerant plants
F
clear additional land for livestock
Answer:
B,C and E are the three agricultural activities that humans perform to minimize their impact on climate change.
Which organizational aid can be used to draw conclusions about events in history?
a.
Diagrams
c.
Flowcharts
b.
Timelines
d.
All of these
Answer:
D
Explanation:
all of theses could be a way to draw
According to the text, which THREE phenomena are a direct result of, or are made worse by, human activities?
A
reduction in seasonal river flooding
B
creation of barrier islands
C
fluctuation of sea levels
D
loss of river sediments
E
deposition of delta sediments
F
filling in of wetlands
Human activities have worsened:
fluctuation of sea levels: Option Creduction in seasonal river flooding; option Closs of river sediments; option DHow does human activity affect the coastal environment?Human activities have been known to cause or worsen adverse environmental conditions.
Human activities such as overfishing, lack of conservation of water, and pollution of water bodies have resulted in several phenomena such as:
fluctuation of sea levelsreduction in seasonal river floodingloss of river sedimentsIn conclusion, human activities negatively affect the coastal environment.
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are these good to submit they are worth 50 % of my grade
Answer:
YES
Explanation:
They are perfect
Answer:
yes
Explanation:
A Pick out the verbs from the following sentences and say whether they are
transitive or intransitive. Point out the subject of each verb and the object of a
transitive verb.
1. Javeria was sleeping soundly.
Answer:
hello you noob bsdk har mahadev ka hai to thoda aur bta bro and then give us an Indian I am not sure if you have to leave clan of
You need to have a password with 5 letters followed by 2 odd digits between 0 and 9, inclusive. If the characters and digits cannot be used more than once, how many choices do you have for your password?
The typical number of courses to finish a major is:
O A. 12.
O B. 15.
O C. 10.
D. 22.
Helllppp plsss (SAT PREP) Find the value of x
Answer:
2x+90°+20°=180°
2x+110°=180°
2x=180°-110°
2x=70°
x=35°
I need help with 2 questions, I don't understand how to do them. Any help would be greatly appreciated!
The length of CE is 3.6 and the radius of the circle is 2
The length of CEStart by calculating the length of AD using:
AD^2 = AC^2 - CD^2
This gives
AD^2 = 10^2 - 6^2
AD^2 = 64
Take the square roots
AD = 8
Represent CE with x.
So:
AE = 10 - x
Calculate ED using:
ED^2 = CD^2 - CE^2
ED^2 = AD^2 - AE^2
So, we have:
AD^2 - AE^2 = CD^2 - CE^2
This gives
8^2 - (10 - x)^2 = 6^2 - x^2
Expand
64 - 100 + 20x - x^2 = 36 - x^2
Add x^2 to both sides
64 - 100 + 20x = 36
Evaluate the like terms
20x = 72
Divide by 20
x = 3.6
Hence, the length of CE is 3.6
The radius of the circleThe equation is given as:
x^2 + y^2 + 6x + 5y = -45/4
Rewrite as:
x^2 + 6x + y^2 + 5y = -45/4
Take the coefficients of x and y
Divide them by 2, square the result and add the result to both sides.
So, we have:
x^2 + 6x + (6/2)^2 + y^2 + 5y + (5/2)^2= -45/4+ (6/2)^2 + (5/2)^2
This gives
x^2 + 6x + (6/2)^2 + y^2 + 5y + (5/2)^2= 4
Express as perfect squares
(x + 3)^2 + (y + 5/2)^2 = 4
The circle equation is represented as:
(x - a)^2 + (y - b)^2 = r^2
Where r represents the radius
By comparison, we have:
r^2 = 4
This gives
r = 2
Hence, the radius of the circle is 2
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How many liters each of a 50% acid solution and a 75% acid solution must be used to produce 90 liters of a 60% acid solution? (Round to two decimal places if necessary.)
The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.
What is the litters about?Note that:
We take x = volume of 25% solution.
We take y = volume of 65% solution.
So, Equation of total volume:
x + y = 80
Hence the equation of amount of acid:
0.25x + 0.65y = 0.45(80)
0.25x + 0.65y = 36
Solve x + y = 80 for x.
x = 80 - y
Then Substitute into the second equation.
0.25(80 - y) + 0.65y = 36
20 - 0.25y + 0.65y = 36
0.4y = 16
y = 40
x + y = 80
x + 40 = 80
x = 40
Therefore, The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.
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In Center City, the ratio of people to dogs is 4:1, and the ratio of dogs to cats is 3:2. What is the ratio of people to cats?
Answer:
let's say theres 30 dogs
so 4:1 not simplified is 120:30
the ratio of dogs to cats would be 30:20
(3x10 = 30 and we have to do 2x10 as well which would equal 20)
120:20 would be the Ratio of ppl to cats
simplified
120/20 = 6
20/20 / 1
6:1
Which statement BEST summarizes how climate change can affect the mass migration of humans on Earth?
A
Climate change can increase the risks of natural hazards in a location, increasing the number of humans that migrate to it.
B
Climate change can increase the amount of natural resources available in areas, attracting humans to migrate to those locations.
C
Climate change can decrease the carrying capacity of areas, forcing humans to migrate to other locations where their needs can be met.
D
Climate change can decrease the rate of natural processes in a location, causing humans to migrate to areas where processes occur quickly.
Answer:
A best summarizes how climate change can affect the mass of migration of humans on earth
The statement that best summarizes how climate change can affect the mass migration of humans on Earth is climate change can decrease the carrying capacity of areas, forcing humans to migrate to other locations where their needs can be met. Therefore, option C is correct.
What is migration?Migration is the process of moving from one place to another for an extended period of time. It can be a temporary or permanent relocation and can occur voluntarily or involuntarily.
People migrate for various reasons, including seeking better economic opportunities, fleeing persecution or conflict, or environmental factors such as droughts or natural disasters.
Migration can occur within a country or across international borders. It can be a personal decision or a collective one, such as when groups of people move together as families or communities.
Migration can have both positive and negative impacts on individuals and society, including economic growth, cultural exchange, and social tensions. It is an important phenomenon that has shaped human history and continues to shape the world we live in today.
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In a poll, 1002 adults in a certain country were asked whether they favor or oppose the use of "federal tax dollars to fund medical research using stem cells obtained from human embryos." Based on the poll results, it is estimated that 46% of adults are in favor, with a margin of error of 3 percentage points. Use the given statistic and margin of error to identify the range of values (confidence interval) likely to contain the true value of the population parameter
The range of values likely to contain the true value of the population parameter is from 43% to 49%.
What is Population parameter?This is referred to a statistical measurement for a particular population and is usually fixed.
We were told that the margin of error is 3 percentage points. This therefore means:
(46 ± 3) % = (46-3)% to (46+3)%
Therefore the range of values is 43% to 49%.
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Which of the following elements must be present on a fertilizer label?
iron
manganese
copper
potassium
Answer:
Potassium, Ive learned about this before. Goodluck!
Explanation:
to find out what information people are posting about you online it is important that you closely monitor
a. your text records
b. the social media websites you participated in
c. your insurance records
d. your phone records
Answer:
B
Explanation:
For each of the following, state whether you expect the distribution to be symmetric, right skewed, or left skewed. Also specify whether the mean or median would best represent a typical observation in the data, and whether the variability of observations would be best represented using the standard deviation or IQR. Explain your reasoning.Housing prices in a country where 25% of the houses cost below $350,000, 50% of the houses cost below $450,000, 75% of the houses cost below $1,000,000 and there are a meaningful number of houses that cost more than $6,000,000.
which of these best describes a biome
Answer:
Could you describe your question more? I think you forgot to attach a picture.
Explanation:
Answer:
A biome is a large area characterized by its vegetation, soil, climate, and wildlife. ... Grasslands are open regions that are dominated by grass and have a warm, dry climate. There are two types of grasslands: tropical grasslands (sometimes called savannas) and temperate grasslands
Explanation:
g) In a college 60% of students come from rural areas and 40% come from urban areas. On the
average 30% of students from rural areas study science and 50% of the students from urban areas study
science. A student is selected at random and is found to be a student of science. Find the probability
that he comes from a rural area.
Answer:
100-(50+30)=100-80=20%
Explanation:
20% is the answer
hope it helps you
please mark me as brainlist
The probability that he comes from a rural area is to be calculated as
100-(50+30)=100-80=20%. So, the probability that he comes from a rural area. So, the probability is 20%.
What is probability?Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive, where 0 indicates an impossible chance of occurrence and 1 denotes the certain outcome of an event. Joint probability refers to a statistical measure that determines the probability of two events occurring together and at the same point in time.
Joint probability is the probability of event Y occurring at the same time that event X occurs. Hence, joint probability is a measure of two events happening at the same time and can only be applied to situations where more than one observation can occur at the same time. Mathematically, it is given by P (A and B) = P(A) * P(B) As in the given situation, the probability estimated is the probability to two events that iPhone is defective and it is manufactured by company A occurring at the same time, it is a joint probability.
Therefore, Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive.
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what state is called the sunshine state
Answer:
Florida
Explanation:
Nickname of U.S. state
A rainstorm in Portland, Oregon, has wiped out the electricity in about 7% of the households in the city. A management team in Portland has a big meeting tomorrow, and all 6 members of the team are hard at work in their separate households, preparing their presentations. What is the probability that none of them has lost electricity in his/her household? Assume that their locations are spread out so that loss of electricity is independent among their households.
Round your response to at least three decimal places.
The probability that none of them has lost electricity in his/her household is 64.7%.
ProbabilityGiven:
Electricity wiped =P=7%
Team members= n=6 members
Hence;
P(x = 0) = (6C0)(0.07^0)(1-0.07)^6
P(x = 0)= (1)(1)(0.93)^6
P(x = 0)=0.6469×100
P(x = 0)=64.7%
Therefore the probability that none of them has lost electricity in his/her household is 64.7%.
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Hi, = P(x = 0) = (6C0)(0.05^0)(1-0.05)^6 = (1)(1)(0.95)^6 = 0.735 Edited by abozer on ...
What is the purpose of taking a personality inventory assessment?
O A.
OA. to find out what personality traits you should acquire for a successful career
B.
to identify your personality traits and relate them to a suitable career
O.C. to compare your personality traits with those of successful people in different
O D.
Identify aspects of your personality that you can improve with the help of am
Which sentence about flexible spending accounts (FSAs) is true?
O A. The funds in the account remain for as long as you're employed by the company sponsoring the FSA.
O B. Contributions are taxed when funds are withdrawn to use on qualifled expenses.
© C. Contributions are made with pretax dollars.
© D. There Is no
contribution limit.
Answer:
The Answer is C
Explanation:
One of the many tax-advantaged bank accounts that might save your payroll taxes is a flexible spending account. There is no contribution limit. This sentence is true about flexible spending accounts( FSAs ).
What is flexible spending accounts ?One of the many tax-advantaged bank accounts that might save your payroll taxes is a flexible spending account, often called a flexible spending arrangement.
You can use pre-tax money from an Employee Reimbursement Account ( ERA ), also known as a Flexible Spending Account ( FSA ), to reduce the cost of qualified healthcare or child care costs each year.
You have a set amount of time during run out to submit claims for the prior year. Run out periods offer some more time for reimbursement. This is applicable to a Dependent Care FSA, Health FSA, and LPFSA.
Thus, option D is correct.
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A store clerk is paid $10.75/ hour and a store assistant manager is paid $16.25/ hour. How long would it take the store managerto make $500 or more than the store clerk? Round to the nearest hour. Show all work.
It will take approximately 91 hours for the store manager to make $500 or more than the store clerk.
If the store clerk is paid $10.75/ hour and the store assistant manager is paid $16.25/ hour, the difference in their pay per hour will be expressed as:
The difference in the amount earned per hour = 16.25 - 10.75
The difference in the amount earned per hour = $5.5
This means that the store assistant manager will collect $5.5 more than the store clerk in one hour. This can be expressed as:
$5.5 = 1 hour
To determine how long it will take the store manager to make $500 or more than the store clerk, we can write:
$500 = x
Divide both expressions:
[tex]\dfrac{5.5}{500} =\dfrac{1}{x} \\Cross \ multiply\\5.5x = 500 \times 1\\5.5x = 500\\x=\frac{500}{5.5}\\x= 90.9 \ hours[/tex]
This means that it will take approximately 91 hours for the store manager to make $500 or more than the store clerk.
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What is the meaning of ethics? Check all of the boxes that apply.
behavior that is good for everyone
doing whatever you want
following the rules
stealing other people’s information
behaving in a way that would be easy to defend
Answer:
behaviour that is good for everyone
Explanation:
i think that the first one is correct because following the rules, what if the rules permits u or forces u to do something which is morally worng .Ethics is related to both morals and principals
Answer:
A C E
Explanation:
ADM Calling lead source in sales team
The ADM Calling lead source in sales team is known to be made up of
Lead CaptureLead AssignmentView Enquiry or Lead HistoryTargets vs. AchievementRole Based Permissions Dashboards & Reports, etc.What is ADM lead?ADM Lead Management is known to be one that gives room for a person to be able to put together and streamline the enquiries that are said to be made from a lot of channels to one cloud-based module.
Note that this is one that helps a person to be able to see company details and also all of their contact records, and see communication history, and others without any form of stress.
The lead source is seen as the main channel via which a lead starts to discovers a company. Therefore, The ADM Calling lead source in sales team is known to be made up of
Lead CaptureLead AssignmentView Enquiry or Lead HistoryTargets vs. AchievementRole Based Permissions Dashboards & Reports, etc.Learn more about sales team from
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