Answer:
A)Experimental Study
B)Observational Study
Step-by-step explanation:
Observational Study : A study where researchers simply collect data based on what is seen and heard and infer based on the data collected.
Experimental Study: A study which involve the random assignment of -participants into different groups in order to determine the causal effect of a certain condition on a certain outcome .
A) In this case we are randomly classifying the subjects into two groups, where one group participate in a regular exercise program for a six week period, while the other half makes no changes. In this Part we are not observing the data . we are doing experiment over here and comparing those two different groups.
So, By definition It is an experimental study
B) In this case we are recording the data of each person and decision will be based on data
So, By definition It is an observational study
Find a polynomial function of degree 3 with real coefficients and the numbers 6, 3i as some of its zeros.
Answer:
A polynomial function of degree 3 with real coefficients and the numbers 6 and i 3 as some of its zeroes is [tex]p_{3}(x) = x^{3}-6\cdot x^{2}+9\cdot x -54[/tex].
Step-by-step explanation:
A third-order polynomial in standard form is a sum of monomials with natural exponentials such that greatest degree of monomials is 3. This kind of polynomials is described by this definition:
[tex]p_{3}(x) =\Sigma\limits_{i=0}^{3} c_{i} \cdot x^{i}[/tex] (Eq. 1)
Where:
[tex]i[/tex] - Index of a sum component, dimensionless.
[tex]c_{i}[/tex] - i-th coefficient, dimensionless.
Where the highest value of [tex]i[/tex] is the degree of the polynomial.
In addition, the Fundamental Theorem establishes that all polynomials with real coefficients and degree higher than zero have a number of complex roots, an extension of the real set, equivalent to the degree of the polynomial itself.
In our case, we guarantee the existence of three complex roots, of which we know two of them: [tex]r_{1} = 6[/tex] and [tex]r_{2} = i\,3[/tex]. The polynomial can be represented as a product of three binomials:
[tex]p_{3}(x) = (x-r_{1})\cdot (x-r_{2})\cdot (x-r_{3})[/tex] (Eq. 2)
Where [tex]r_{1}[/tex], [tex]r_{2}[/tex] and [tex]r_{3}[/tex] are the roots of the third order polynomial.
If we know that [tex]r_{1} = 6[/tex] and [tex]r_{2} = i\,3[/tex] and assume that [tex]r_{3} = -i\,3[/tex], the resulting polynomial is:
[tex]p_{3} (x) = (x-6)\cdot (x+i\,3)\cdot (x-i\,3)[/tex]
And by Algebra of real numbers we obtain the polynomial in its standard form:
[tex]p_{3}(x) = (x-6)\cdot (x^{2}+9)[/tex]
[tex]p_{3}(x) = x\cdot (x^{2}+9)-6\cdot (x^{2}+9)[/tex]
[tex]p_{3}(x) = x^{3}+9\cdot x -6\cdot x^{2}-54[/tex]
[tex]p_{3}(x) = x^{3}-6\cdot x^{2}+9\cdot x -54[/tex]
A polynomial function of degree 3 with real coefficients and the numbers 6 and i 3 as some of its zeroes is [tex]p_{3}(x) = x^{3}-6\cdot x^{2}+9\cdot x -54[/tex].
four ponds of banana cost $2.60. what is the cost perpond?
Answer:
.65c
Step-by-step explanation:
2.60/4 equals .65
Answer:
.65
Step-by-step explanation:
2.06 divided by 4=.65
Hope this helped!
A store sells 6 bottles of water for $2.88. Find the unit price
Answer:27 ://///
Step-by-step explanation:
Answer:
$.48 per bottle
Step-by-step explanation:
The unit price is the total price divided by the number of items
2.88/6
$.48 per bottle
Arrange the three numbers shown in order from least to greatest.
1. 0.67
2. 6/9
3. 6.7%
Answer:1. 6/9 2. 0.69 3. 6.7
Step-by-step explanation:i think this is correct
Answer:
It is: 6.7%, 6/9, 0.67.
Step-by-step explanation:
Convert all your numbers to decimals.
6.7% = 0.067
6/9 = 0.66... (repeating decimal)
0.67 = 0.67 (already a decimal)
Line the decimals up to make them fair to compare then order them from least - greatest.
−2/3(12c−9)+14c
I need the answer
Answer:
6c+6
Step-by-step explanation:
-24/3c+18/3+14c
-8c+6+14c
6c+6
Divide 28 of soda into two groups so the ratio is 3 to 4
Answer:Total units would be: 3+4 = 7. value of 1 unit = 28/7 = 4. ratio would be 3(4) & 4(4) = 12 & 16
Step-by-step explanation:
The total price for a group of people at a restaurant is $113.40. Each person pays
$16.20. How many people argjn the group?
16 people
70 people
7 people
10 people
Answer:
7 people
Step-by-step explanation:
Explaining a Rule for Dividing Fractions
Explain the steps you would take to find the quotient of
1
3
÷ 4
3
Answer:
One rule for dividing fractions is the rule where instead of doing 13/43, you can do 13 times 1/43.
Step-by-step explanation:
Yeah
Answer:
1/4
Step-by-step explanation:
Sample response: First, rewrite the problem as a multiplication problem. Multiply 1/3 by the reciprocal of 4/3, which is 3/4. Then multiply to get 3/12. Simplifying gives the answer of 1/4.
Which of the following statements are true?
The Fire Station and the Worship Center lie on the same side of the transversal and form a linear pair.
The Museum and the Coffee Shop lie on the opposite sides of the transversal and form a pair of alternate exterior angles.
The Bank, the Museum, the Coffee Shop, the Worship Center are interior angles.
O The Day Care and the Park are on the same side of the transversal and form a linear pair.
The Day Care and the Community Center are supplementary angles and on opposite sides of the transversal.
The Bank and the Community Center are on opposite sides of the transversal and form a pair of alternate interior angles.
The Park and the Museum are adjacent angles and form a vertical pair of angles.
The Fire Station and the Community Center are consecutive interior angles lying on the same side of the transversal.
Answer:
*The Museum and the Coffee Shop lie on the opposite sides of the transversal and form a pair of alternate exterior angles
*The Day Care and the Community Center are supplementary angles and on opposite sides of the transversal.
*The Fire Station and the Community Center are consecutive interior angles lying on the same side of the transversal
Step-by-step explanation:
The transversal is the major road that crosses the other two roads shown in the diagram above.
Applying the knowledge of properties of lines, let's consider each statement given, to ascertain which is true and which is untrue:
Statement 1: 'The Fire Station and the Worship Center lie on the same side of the transversal and form a linear pair."
The fire station and the Worship center are on the same side of the transversal, however, they do not form a linear pair. They are corresponding angles.
Statement is NOT TRUE.
Statement 2: "The Museum and the Coffee Shop lie on the opposite sides of the transversal and form a pair of alternate exterior angles."
This statement is TRUE.
The Museum and the Coffee shop form alternate exterior angles pair.
Statement 3: "The Bank, the Museum, the Coffee Shop, the Worship Center are interior angles."
This is NOT TRUE.
They are all EXTERIOR angles.
Statement 4: "The Day Care and the Park are on the same side of the transversal and form a linear pair."
This is NOT TRUE.
They are consecutive interior angles.
Statement 5: "The Day Care and the Community Center are supplementary angles and on opposite sides of the transversal."
This is TRUE.
Statement 6: "The Bank and the Community Center are on opposite sides of the transversal and form a pair of alternate interior angles"
This is NOT TRUE.
They are on opposite side of the transversal but one the bank is an exterior angle while the community center is an interior angle.
Statement 7: "The Park and the Museum are adjacent angles and form a vertical pair of angles."
This is NOT TRUE.
They do not share the same side, so they can't be adjacent angles. They only share the same vertex, which makes them vertical angles.
Statement 8: "The Fire Station and the Community Center are consecutive interior angles lying on the same side of the transversal."
This is TRUE.
What does each space between two numbers represent
sally has $15,208 and wants to buy a tv for 16,000 round 15,208 to the nearest hundred
Answer:
15,200
Step-by-step explanation:
Answer:
15,200
Step-by-step explanation:
208 is much closer to 200 than 300. it says hundred so look a the hundreds place (208) and round. 250 and up = next hundred number 249 and down = same hundred number
13. Which type of flower is the better buy?
Type of
Number of
Cost ($)
Flower
Flowers
Roses
2.
$7
Lilies
3
$9
Tulips
4
$11
Answer:
Tulips
Step-by-step explanation:
7÷2 is 3.50$ Each Rose costs 3.50$
9÷3 is 3$ Each Liliy costs 3$
11÷4 is 2.75$ Each Tulip costs 2.75$
The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing graduate management education. GMAT scores are used as part of the admissions process for more than 6100 graduate management programs worldwide. The mean sore for all test‑takers is 550 with a standard deviation of 120. A researcher in the Philippines is concerned about the performance of undergraduates in the Philippines on the GMAT. She believes that the mean scores for this year's college seniors in the Philippines who are interested in pursuing graduate management education will be less than 550. She has a random sample of 250 college seniors in the Philippines interested in pursuing graduate management education who plan to take the GMAT. Suppose we know that GMAT scores are Normally distributed with standard deviation σ=120. The null and alternative hypotheses are H0:µ=550 versus Ha:µ<550.
Required:
State the null and alternative hypotheses for the study of the performance on the GMAT of college seniors in the Philippines.
Answer:
H₀: μ = 550 vs. Hₐ: μ < 550.
Step-by-step explanation:
A researcher believes that the mean scores for this year's college seniors in the Philippines who are interested in pursuing graduate management education will be less than 550.
The mean sore for all test‑takers is μ = 550 with a standard deviation of σ = 120.
A random sample of n = 250 college seniors in the Philippines interested in pursuing graduate management education who plan to take the GMAT were selected.
The null and alternative hypotheses for the study of the performance on the GMAT of college seniors in the Philippines is as follows:
H₀: The mean scores for this year's college seniors in the Philippines who are interested in pursuing graduate management education will not be less than 550, i.e. μ = 550.
Hₐ: The mean scores for this year's college seniors in the Philippines who are interested in pursuing graduate management education will be less than 550, i.e. μ < 550.
12/19/04
Sales
$96.88
$80.51
$490.94
$60.67
$90.59
$429.21
$70.11
$99.44
$417.53
Credits
$80.73
$91.56
$223.02
$394.88
6) Find the amount of the bank charge on the sales / credit record for 12/19/04 if the
fee paid by the business is 6.50%
$2.568, cents:5058
Step-by-step explanation:
maybe...
Jenny & Natasha are working on a problem together: Solve 3+8=−2. Natasha thinks the first step is to multiply by 3. Jenny explains that this is not the most efficient way to solve. Explain who is correct & justify your reasoning.
This is the correct way to solve the problem :
You add 3 and 8 together.
you see if it equals -2 or not.
I hope this helps!
Answer:
jenny the first step is to subtract 8
Step-by-step explanation:
Find the distance between the two points in simplest radical form.
5,9 and -4,-3
Answer:
gg
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
15
2/3x + 2/3 + 1/5x = 2/3x
Does it have one solution, no solution, or infinity many solutions?
Answer:
One solution
Step-by-step explanation
I need help with my homwork, and understanding how to solve it
Problem:
Answer:
Sorry, I cant read whole problem. Edit your question and ill fix my answer
Step-by-step explanation:
The graph shows the linear relationship between the balance in a student school lunch account and the number of lunches purchased
Answer:
Step-by-step explanation:
guys can u help me put the answers with the graphs i will give 20 points
Answer:
a
f
L
v
o
r
t
e
Step-by-step explanation:
Answer:
Check explanation.
Step-by-step explanation:
y > 3x - 4 = F
y < - 1/2x + 9 = L
y > 3x + 2 = U
y > 5 = R
y < - 2/3x = I
y > 1/3x + 3 = T
These are all the ones I can find, call me back if you still need help.
PLZ HELP WILL VOTE BRAINIEST
x + 1
Combine like terms, so terms with x go together and terms without an x go together
So 2x - x = x
3 - 2 = 1
That's as simplified as it can be
Brainiest please
5) A cook wants to make 8 pies. She starts with 18 eggs and has 10 left over. What
equation can be used to find the number of eggs the baker uses in each pie?
Can someone Help me please
Answer:
I think it would be (18-10)/8=1
Step-by-step explanation:
Since she has 10 left over you first have to subtract 10 from 18 which would equal 8. Then you take that 8 and divide it by 8 because there are 8 pies. Then you would get the final answer of 1 egg
what is a point-slope equation of the line with slope -10 that goes through the point (1,4)
Answer:
The answer is
[tex]y - 4 = - 10(x - 1)[/tex]
Step-by-step explanation:
To find an equation of a line in point slope form when given the slope and a point we use the formula
[tex]y - y_1 = m(x - x_1)[/tex]
where
m is the slope
( x1 , y1) is the point
So we have the final answer as
[tex]y - 4 = - 10(x - 1)[/tex]
Hope this helps you
What is the midpoint of 0.13 and 0.14
brainliest will be awarded if uu give the correct answer:)))
- [tex]\frac{5}{8}[/tex] + [tex]\frac{3}{8}[/tex]
Answer:
[tex]-0.25[/tex]
The decimal 0.5 represents the fraction 5/10. The decimal 0.25 represents the fraction 25/100.
[tex]\frac{25}{100}[/tex]
-BBBM
have a random argument with yourselves
Answer:
ok
Step-by-step explanation:
If M
the m
А
B
D.
С
E
I and m are parallel to each other
2.10 grater than 2.09
true or false
Answer:
2.10 is greater than 2.09
Step-by-step explanation:
because 2.10 has more equation than 2.09
Answer:
2.10 is GREATER than 2.09 so **TRUE**
Step-by-step explanation:
hope this helps </3
hello please help will give brainliest!
Answer:
The Answer is D
Step-by-step explanation:
Do what answer D tells you to do. Obviously.