Complete question is;
Researchers are interested in learning more about the age of women when they marry for the first time so
they survey 500 married or divorced women and ask them how old they were when they first married. The
collection of the ages of the 500 women when they first married is a .............
A) Parameter B) Population C) Sample D) Statistic
Answer:
Option C: Sample
Step-by-step explanation:
We are told that a survey of 500 married or divorced women was carried out and they were asked how old they were when they first married.
Now, this survey represents a portion of the population. And a portion of the population surveyed is known as a Sample.
Thus, the correct answer is Option C
Zoe writes several checks to pay bills. This leaves her with a balance of -$27. She then goes to the bank and deposited $27 into her checking account. What is zoe's new account balance
Answer:
0$
Hope this helped ;)
Answer:It would be -54
Step-by-step explanation:
Because you deposited money into the account so you will add -27 and 27 to get -54.
Deb has 3/4 of a brownie. She wants to divide it up into 1/8 of a brownie so she can have it throughout the day. How many 1/8s will she have
's will she have?
which table represents a function?
Answer:
First table
Step-by-step explanation:
It will be the first table as on the other ones there is two of the same X
find the slope represented in the table below show all work
Answer:
no table
Step-by-step explanation:
find the value of the expression below. log6 3 + log6 8- log6 4
Given:
Consider the expression is
[tex]\log_63+\log_68-\log_64[/tex]
To find:
The value of given expression.
Solution:
We have,
[tex]\log_63+\log_68-\log_64[/tex]
Using properties of logarithm, we get
[tex]=\log_6(3\times 8)-\log_64[/tex] [tex][\because \log_am+\log_an=\log_amn][/tex]
[tex]=\log_6(24)-\log_64[/tex]
[tex]=\log_6\left( \dfrac{24}{4}\right)[/tex] [tex][\because \log_am-\log_an=\log_a\dfrac{m}{n}][/tex]
[tex]=\log_66[/tex]
[tex]=1[/tex] [tex][\because \log_aa=1][/tex]
Therefore, the value of given expression is 1.
(C) 1 is the correct answer.
Which pair of quantities for a proportional relationship select all that apply
Answer:
Which two ratios represent quantities that are proportional?
Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.
Step-by-step explanation:
Can u please answer my recent question!!!!!
Use intercepts to graph the linear equation 3x-y=-5
a dealership sets car prices so there is 40% profit. If a dealership paid 5,300 for a car how much should they sell the car?
The measure of angle Q is 70 degrees. Find the measure of angle P.
Answer:
40 degrees
Step-by-step explanation:
It would be 40 degrees because every triangle will add up to 180 degrees. Angle Q and R are equal (pulled from the sign that the two lines from P are equal) So 180 - 70 = 110 - 70 = 40
The measure of angle P is 55 degrees.
The given image is an isosceles triangle. An isosceles triangle is a three sided polygon that has two equal angles. Angles in a triangle add up to 180 degrees.
The triangle is an isosceles triangle because of the two lines on the triangle.
<p + <r + <q = 180 degrees
70 + <r + <q = 180
<r + <q = 180 - 70
<r + <q = 110
<r + <q = 110/2 = 55
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Which statements about f(x) = −(x − 7)2 + 4 are true?
Select all that apply.
Answer:
x=9
Step-by-step explanation:
f(x) = −(x − 7)2 + 4
(substitute f(x) = 0)
0= −(x − 7)2 + 4
(distribute 2 into brackets)
0= −(2x - 14) + 4
(remove brackets and change the sign of each expression inside the brackets)
0= - 2x + 14 + 4
(add the numbers)
0= - 2x + 18
(move variable to the other side and change its sign)
2x = 18
(divide both sides by 2)
x = 9
The given expression is quadratic, parabolic graph, relative maxima and real zeros. The correct options are (a), (c) and (f).
What is a quadratic equation?The general form of a quadratic equation is given as ax^2 + bx + c = 0.
Here, a ≠ 0 and b and c are integers.
The degree of a quadratic equation is 2.
The given expression is f(x) = -(x - 7)² + 4
Since the degree of the expression is 2, it is quadratic.
The graph of the given equation will be parabolic.
By comparing from the general vertex form (x - h)² + k, its vertex can be found as (7, 4).
Axis of symmetry is x = 7.
y-intercept can be obtained by plugging x = 0 as,
-(0 - 7)² + 4 = 53.
Maxima or minima can be found as below,
f'(x) = 0
⇒ -2(x - 7) = 0
⇒ x = 7
In order to find the solution write the expression as follows,
-(x - 7)² + 4 = 0
⇒ -x² + 14x - 49 + 4 = 0
⇒ x² - 14x + 45 = 0
⇒ x = 5,9
Thus, the equation has real solutions.
Hence, the properties of the given equation are derived as quadratic, parabolic graph, relative maxima and real zeros.
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The measure of an angle’s supplement is 84° more than the angle. Find the measure of
the angle and its supplement
Answer:
angle = 48 supplement = 132
Step-by-step explanation:
Answer:
angle 48 and supplement 132
A whole foods company sends an email survey to all customers who purchase a certain brand of vitamins each month. The previous month, 523 people purchased this brand of vitamins.
Surveys were sent to 112 of these people, chosen at random, and 96 people responded to the survey. Identify the population and the sample. (1 point)
The population is 112 and the sample is 96.
The population is 523 and the sample is 96.
The population is 523 and the sample is 112.
The population is 112 and the sample is 523.
O
Answer: The population is 523 and the sample is 112.
Step-by-step explanation:
In statistical parlance, a population is referred to as all the entire individuals or subject which makes up a certain group of interest. In the scenario above, the group of interest refers to the consumers who buys the vitamin brand each month. Hence, the population encompasses all the buyers for for a particular month which sums up to 523 customers.
The sample is a subset culled from the population. It refers to a smaller group of individuals or subject which are chosen by a sampling method from the entire population. In the scenario above, the number of randomly selected consumers who were sent surveys are the sample. The fact that not all those who were sent surveys responded does not change the fact that they were randomly selected from the larger population pool and will hence be considered to be a part of the sample.Hence the sample is 112.
Find the volume of the described solid of revolution or state that it does not exist. The region bounded by f(x) and the x-axis on the interval [,) is revolved about the x-axis.
This question is incomplete, the complete question is;
Find the volume of the described solid of revolution or state that it does not exist.
The region bounded by f(x) = x⁻⁷ and the x-axis on the interval [ 1, ∞) is revolved about the x-axis.
Answer: volume of the cubic units is π/13
Step-by-step explanation:
Given that;
f(x) = x⁻⁷
in the image, Area of ring = πR²
we substitute
Area = π (x⁻⁷)²
= π(x⁻¹⁴)
Now
Volume = ₁∫^∞ π(x⁻¹⁴) dx
= [ -π/13 x⁻¹³ ]₁^∞
= 0 + π/13
= π/13
therefore volume of the cubic units is π/13
I tried solving it and I didn’t get the right answer can someone explain to me
Answer:
X=29°
Step-by-step explanation:
Since triangles ABC and DEC are congruent, Angle A = Angle D = 74°
Sum of all angles in a triangle is 180°
So, Angle A + Angle B + Angle C =180°
74°+2X+48°=180°
2X=180°-122°
2X=58°
X=29°
======================================================
Explanation:
When it comes to congruence statements like this, the order of the letters is important. This is so we pair up the letters properly.
ABC has A first, B second, C third
DEC has D first, E second, C third
So we have these pairings
A pairs with DB pairs with EC pairs with C (ie it pairs with itself)Which leads to
A = DB = EC = CDue to the fact that congruent triangles have congruent corresponding parts.
Since B = E and B = 2x, we can say that E = 2x by either substitution or the transitive property. Both effectively say the same thing.
---------------------------
Now focus on triangle CDE
The three angles we have are
C = 48D = 74E = 2xThose three angles add to 180. This is true for any triangle.
C+D+E = 180
48+74+2x = 180
122+2x = 180
2x = 180-122
2x = 58
2x = 58/2
x = 29
--------------------------------
Side note: since x = 29, this means angle B = 2x = 2*29 = 58, and this is the measure of angle E as well.
We can check the answer by doing C+D+E = 48+74+58 = 180. So we have confirmed the answer.
a family buys a house worth $326000. they pay $75000 deposit and take a mortgage for the balance at J12= 9% per annum to be ammortized over 30 years with monthly payments. find the value of mortgage of their house
Answer:
251,000$
Step-by-step explanation:
Solve the system by substitution. You must show your work.
-2.5x + y = 13.5
2.25x - y = -12.25
Answer: (-5,1)
Step-by-step explanation:
−2.5x+y=13.5
−2.5x+y+2.5x=13.5+2.5x(Add 2.5x to both sides)
y=2.5x+13.5
Step: Substitute
5x+13.5 and 2.25x−y=−12.25:
2.25x−y=−12.25
2.25x−(2.5x+13.5)=−12.25
−0.25x−13.5=−12.25(Simplify both sides of the equation)
−0.25x−13.5+13.5=−12.25+13.5(Add 13.5 to both sides)
−0.25x=1.25
−0.25=1.25−0.25(Divide both sides by -0.25)
x=−5
Step: Substitute−5forxiny=2.5x+13.5:
y=2.5x+13.5
y=(2.5)(−5)+13.5
y=1(Simplify both sides of the equation)
Answer:
x = -4, y = 3.5
Step-by-step explanation:
-2.5x + y = 13.5 ------ (1)
2.25x - y = -12.25 ---(2)
you can substitute (1) into (2) or vice versa
We are going to substitute (2) into (1)
but first we have to rewrite it in terms of x or y
Lets do y
from (2), (after subtracting -2.25x from both sides), y = 12.25 + 2.25x ----(3)
plug in (3) into (1)
-2.5x + (12.25 + 2.25x) = 13.5
-2.5x + 12.25 + 2.25x = 13.5
-2.5x + 2.25x = 13.5 - 12.5
-0.25x = 1
x = -(1/.25)
x = -4
Now we have x
We already used (2), lets plug in x = -4 into (1)
-2.5(-4) + y = 13.5
10 + y = 13.5
y = 13.5 - 10
y = 3.5
can someone help me with this
−2(7−y)+4=−4
Simplify −2(7−y)+4.
2y−10=−4
Move all terms not containing y to the right side of the equation.
2y=6
Divide each term by 2 and simplify.
y=3
When they distributed the 2 they did -2×y but it was supposed to be -2×-y, which equals a positive 2y
Hope this helps! :) Plz mark as brainliest!
What is the additive Inverse of 3 1/4
Answer:
the answer is -3 1/4
Step-by-step explanation:
The additive Inverse of 3 1/4 will be - 3 1/4.
What is inverse of a function?Suppose that the given function is [tex]f:X\rightarrow Y[/tex]
Then, if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is
It simply means, inverse of 'f' is undo operator, that takes back the effect of 'f'
We are given the number as;
3 1/4 = 13/4
Therefore, the additive Inverse of 3 1/4 will be;
Negative 13/4 = - 3 1/4
Hence, the additive Inverse of 3 1/4 will be - 3 1/4.
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__x2/3<2/3 choose all of the numbers that make the statement true.
A. 2/3
B.3/4
C.3/2
D.1/3
E.4/3
Answer:
Step-by-step explanation:
A
what is 360 times 345
Answer:
124200
Step-by-step explanation:
i think this is the answer
Answer:
124200
Step-by-step explanation:
19:28:14
Graph 8x - 2y = -16.
a
Ty
Ty
b
d
Mark this and return
Save and Exit
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Sub
Find the value of x.
(2.5x + 6)
Answer:
See below
Step-by-step explanation:
All of the sides are the same length so all of the angles are the same in this equilateral triangle....each is 60°
60 = 2.5 x + 6
54 = 2.5 x
x = 21.6 °
Consider the population of electric usage per month for houses. The standard deviation of this population is 128 kilowatt-hours. What is the smallest sample size to provide a 90% confidence interval for the population mean with a margin of error of 30 or less
Answer: 50
Step-by-step explanation:
Formula for sample size(n) if population standard deviation [tex](\sigma)[/tex] is known:
[tex]n=(\dfrac{\sigma\times z_c}{E})^2[/tex] , E = Margin of error , [tex]z^c[/tex] = Critical z-value
As per given,
[tex]\sigma= 128[/tex] kilowatt-hours.
Critical z-value for 90% confidence = 1.645
E = 30
Required sample size : [tex]n=(\dfrac{128\times1.645}{30})^2=(7.01867)^2[/tex]
[tex]=49.2617285689\approx50[/tex]
Hence, the smallest sample size to provide a 90% confidence interval for the population mean with a margin of error of 30 or less = 50
options are A, B, C, E, H
WHICH ONES ARE CORRECT?
Answer:
A or C
Step-by-step explanation:
Each prize for a carnival booth costs $0.32. How many prizes can you buy with $96?
Answer: 96 divided by 0.32 is 300, so it's 300.
In Denver, 20% of the days each year are rainy (assume it's a normal year with 365
days).
How many days are rainy days per year? Round to the nearest day if needed.
73 days
20 days
18 days
70 days
Answer: 73
Step-by-step explanation:
52nd term of the sequence 2,6,10,14,
Answer:
210
Step-by-step explanation:
You can multiply 52 by 4 which is 208.
Next, you can add that to the number 2 which is 210.
Hope this Helps!!! :)
If f(x) = x/2 + 8, what is f(x) when x = 10?
Answer:
13
Step-by-step explanation:
All ya gotta do is replace the x value with 10. So it would look like this,
f(x) =10/2 + 8
f(x) = 5 + 8
f(x) = 13
Hope that helps and have a great day!
(if you want me to explain more lemme know!)
Answer:
well i would say just add ten
Step-by-step explanation:
9 + 8 × 3 - (5 × 2)=?
Answer:
23
Step-by-step explanation:
Hope this helps
Answer:
23
Step-by-step explanation:
9 + 8 × 3 - (5 × 2)
9 + 8 × 3 - (10)
9 + 24 - 10
33 - 10
23
What value goes in cell B?
Answer:
Question incomplete
Step-by-step explanation: