On Saturday, 960 people visit the zoo. Of the visitors, 40% are children. How many of the visitors on Saturday were children?
A two sample t test for a difference in means was conducted to investigate whether the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke based on the P value in a significance level of 0.05 which of the following is a correct conclusion
Answer: There is convincing statistical evidence that the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke.
Step-by-step explanation:
Factor 9x2 – 4.
options:
A)
(3x + 2)(3x + 2)
B)
(3x – 2)(3x + 2)
C)
(3x – 2)(x + 2)
D)
(3x – 1)(3x + 4)
Answer:
B
Step-by-step explanation: Differences between squares.
9x^2-4
(3^2) (x^2) -(2^2)
(3x-2)(3x+2)
Although traffic fatalities have been decreasing for years, this decrease has not been experienced equally in all segments of the population. In fact, although the overall rate of traffic fatalities has been decreasing, the rate has declined the most for those with more education and has actually gone up for those without high school degrees. A recent study shows that among those over 25, as education level increased from less than high school, to high school grad, to some college, to college grad, the rate of motor vehicle crash deaths decreased.
1) What are the explanatory and response variables? Drag each variable to the appropriate column
1. Rate of motor vehicle crash deaths
2. Level of education
A) Response Variable
B) Explanatory Variable
2) Those with less education tend to drive cars that are older, have poorer crash test ratings, and have fewer safety features such as side airbags. Are the variables age of car, crash test rating, and presence of safety features explanatory variables, response variables, or lurking variables?
A) They are all explanatory variables since they are all characteristics of a car.
B) They are lurking variables as they are neither the primary explanatory nor response variables
C) They are all response variables since they can determine how much damage a car will receive in a motor vehicle crash.
D) None of the choices are correct education level good.
3) Is the association between traffic fatalities reason to think that a higher level of education actually causes an individual to be a safe driver? None of the choices are correct
A) Without an experiment, no causal relationship can be made.
B) There is a causal relationship because the study shows that the level of education has an impact on traffic fatalities are associated.
C) There is a causal relationship because level of education and motor vehicles.
D) None of the choices are correct.
Answer:
1.
The explanatory variable is the level of education.
response variable is Rate of motor vehicle crash deaths
2. b
3. A) Without an experiment, no causal relationship can be made.
Step-by-step explanation:
1.
The explanatory variable is the level of education.
The explanatory variable tells us that more education among people over 25 years, brings about a reduction in motor deaths.
The response variable is the rate of motor vehicle deaths.
This variable actually responds to the changes in the explanatory variable. The rate of motor vehicle deaths could increase or decrease based on the level of education.
2.
They are lurking variables. option B
These variables are not known primarily as explanatory variables here in this relationship but they have the ability to affect the result of the study.
3. We have to carry out an experiment first in order to carry out a causal relationship.
Based on your data, describe the relationship between age and the number of U.S. states a
person can name in 60 seconds.
I
Answer:
where is teh data?
Step-by-step explanation:
what is 9983988038208302-square root of 10 billion squared?
Need help quick, i will call you brainliest :D
Janine inflated a ball to a radius of 18cm and another ball to a radius of 12cm. how much greater was the volume of air in the larger ball than the smaller ball?
Answer:
17,190.79 cm ³
Step-by-step explanation:
24429.02 - 7238.23
what is 1/3 of 2/4?
Answer:
1/6
it will
1/3 * 2/4
= 1/3 * 1/2
= 1/6
hope it will help
Answer:
1/6
Step-by-step explanation:
What is the area of the segment?
Answer:
The Area of a Segment is the area of a sector minus the triangular piece (shown in light blue here). There is a lengthy reason, but the result is a slight modification of the Sector formula: Area of Segment = θ − sin(θ) 2 × r2 (when θ is in radians) Area of Segment = ( θ × π 360 − sin(θ)2 ) × r2 (when θ is in degrees)
Daniel accepted a new job at a company with a contract guaranteeing annual raises. Let S represent Daniel's salary after working for n years at the company. A graph of S is shown below. Write an equation for S then state the y-intercept of the graph and determine its interpretation in the context of the problem.
Answer:
S= 45000+2000n
Step-by-step explanation:
The y-intercept of the function is 45000 which represents Daniel's salary when hired.
On Monday, the high temperature in Abilene was 75.6 degrees Fahrenheit and the high temperature in New York City was 54 degrees Fahrenheit. How many times greater was the high temperature in Abilene than the high temperature in New York on Monday?
Answer:
On monday,the high temperature in abilene was 75.6 degrees Fahrenheit and the temperature in New york city was 54 degrees Fahrenheit.How many times greater was the high tempareture in Abilene than the high temperature in New York on monday plz show your work
Step-by-step explanation:
5.7 x 10 to the power of 1
5.7 x 10 to the power of 2
5.7 x 10 to the power of 3
Answer:
idontk nowthis is half a ss
Step-by-step explanation:
The age of a father is two less than seven times the age of his son in two years the sum of their ages will be 57 if the son's present ages S years which equation models the situation
Answer:
[tex]f = 7s -2[/tex]
[tex]f + s =53[/tex]
Step-by-step explanation:
Given
Let
f = Father's age
s = Son's age
We'll solve this question, while reading through the instructions
From the first statement;
f is 2 less than 7 times s.
This means
[tex]f = 7s -2[/tex]
In two years time, the father will be f +2 and the son will be s + 2
So, their sum is:
[tex](f+2) + (s + 2) = 57[/tex]
[tex]f + 2 + s + 2 =57[/tex]
Collect like terns
[tex]f + s =57-2-2[/tex]
[tex]f + s =53[/tex]
So, the equations are:
[tex]f = 7s -2[/tex]
[tex]f + s =53[/tex]
Stephanie bought a chair for $124.00. The finance charge was $24 and she paid for it over 12 months. (Finance Ch arg e: #Months)(12) Use the formula Amount Financed calculate her approximate APR. Approximate APR to Round the answer to the nearest tenth.
O 20.5%
O 19.4%
O 1.6%
O 1.5%
Q10
A photographer increases the price he charges to print photographs. He
wants to know if this affects his sales.
Last week, before the price increase, the average number of photos ordered was 12.
This week customers ordered
Photos ordered
Number of customers
1 - 10
26
11-20
21.30
6
31 - 40
41 - 50
0
51 - 60
Does the price increase seem to have had an effect on the number of prints ordered per customer?
Explain your answer. Include calculations to support your decision.
Answer:
1087272828192910101010101
Erica And Amy started biking in opposite directions at the same time from the same place. Erica biked at a speed of 6 meters per second and Amy biked at a speed of 4 meters per second. How soon were they exactly one km apart?
Answer:
100 seconds
i hope this helps
4/5,9/10,17/20 least to greatest
Answer: 4/5 17/20 9/10
Step-by-step explanation:
Find a common denominator
4/5-16/20
17/20-17/20
9/10-18/20
Raymoon sold an article at a loss of 5%. If he had sold it for 270 more, he would have gained 7% find the cost prize of article
IᑎᔕEᑕTIOᑎ ᑭEᒍᗩY✓ hahahaha
I need help with this please
Answer:
x+7 y+5
Step-by-step explanation:
For this problem all you have to do is count how many units it takes to get from point R to point R'
for the x value it takes 7 units and for the y value it takes 5 units
I don't get it i need help
Answer:
x = 33.5 °
Step-by-step explanation:
The two angle add to a straight 180 degree angle
so
4x+5 + 41 = 180
4x = 134
x = 33.5 °
Free 50 Points.
(You don't really need to answer the question)
¯\_(ツ)_/¯
Find the answer for,
746x^97 - 3465 * 3742 + 2345
Step-by-step explanation:
3742 + 2345=6087
I don't really understand what the 746x^97 bit means sorryyyy :(
Fill in the blanks with a positive or negative Integer
1 ) Sally lost twenty-four quarters because she did not put the money in her piggy bank.
2 ) Sara lost thirty-three pounds after working out and dieting. ______
3 ) Jessica has 17 nickels in her bank. ______
4 ) The stock market dropped 33 points after the bad economic news yesterday. ______
5 ) Dan had seventeen baseball cards in his collection. ______
Answer:
Step-by-step explanation:
1) - 24
2) -33
3) + 17
4) -33
5) +17
Hope that helps!
Find the total surface area of the number
cube.
2 in.
2 in.
2 in.
Answer: 24 Inches
Step-by-step explanation:
1. Toni bought 5 t-shirt for $54 . They each cost the same . Also please tell me how to right it
Answer:
5 T-shirts = $54
10 T-shirts = $108
20 T-shirts = $216
The circle below is centered at the point (1, 2) and has a radius of length 3.
What is its equation?
Answer:
[tex](x - 1) {}^{2} + (y - 2) {}^{2} = 9[/tex]
Step-by-step explanation:
The general circle equation is
[tex](x - h) {}^{2} + (y - k) {}^{2} = r {}^{2} [/tex]
where r is the radius.
Since we know all the information just plug it in the equation above.
[tex](x - 1) { }^{2} + (y - 2) {}^{2} = {3}^{2} [/tex]
Simplify 3 squared.
[tex](x - 1) {}^{2} + (y - 2) {}^{2} = 9[/tex]
can someone help me please
Answer:
D) CDG and GDE
Step-by-step explanation:
These angles add up to 180 degrees, making them supplementary angles
CAN SOMEONE GENUINELY HELP ME PLEASE???
Which investment would make you the most interest? Explain.
A: $450 at 7% for 10 years
B: $1,300 at 5% for 6 years
Answer:
i think it would be A
Step-by-step explanation:
for the grey boxes the answer choices are:
1. left
2. right
for the second one it’s:
1.up
2.down
How to turn a percentage into a decimal
Answer:
Divide a percent by 100 and remove the percent sign to change it from a percent to a decimal.
Step-by-step explanation:
1. Example: 9 % is 0.09
2. Example: 8% is 0.08
3 .Example: 10% will change to 10/100 =decimal 0.10
That how it work just follow the example
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\textsf{You have DIVIDE your GIVEN PERCENT by 100 because}\\\large\textsf{percentages runs out of 100}[/tex]
[tex]\large\textsf{Example }\downarrow[/tex]
[tex]\mathsf{\dfrac{75\%}{100}}[/tex]
[tex]\mathsf{= \dfrac{75}{100}}[/tex]
[tex]\boxed{ \textsf{\bf 0.75}}\large\checkmark[/tex] ☑️
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]