Answer: 100 minutes
Step-by-step explanation:
7.5 gal/ft^3 for water
A 2160 ft^3 pool has room for (2160 ft^3)*(7.5 gal/ft^3) = 16,200 gallons of water
Water needed to fill: (16,200 gal - 1200 gal) = 15,000 gal
Rate of filling: 20 ft^3/min
(20 ft^3/min)*(7.5 gal/ft^3) = 150 gal/min
Tiome to add 15,000 gallons of water:
(15,000 gal/150 gal/min) = 100 minutes
A researcher was interested in the effects of gender on attitudes toward women in leadership positions. The researcher surveyed a group of individuals, 12 of whom were men and 12 of whom were women. In this example, what is gender
Gender refers to the social and cultural roles, behaviors, and expectations associated with being male or female. It is a complex construct that includes biological, psychological, and sociocultural factors.
In the context of the researcher's study, gender refers to the binary categories of male and female that were used to differentiate between the 24 individuals surveyed. The study aimed to investigate whether there are differences in attitudes toward women in leadership positions based on this binary categorization.
It is important to note that while gender is often simplified into binary categories, it is actually a diverse and multifaceted construct that can encompass a range of identities and experiences beyond male and female. Researchers should be cognizant of the limitations of binary categorizations and strive to use more inclusive language and methods whenever possible.
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Find the indicated conditional probability
using the following two-way table:
Grade
Drive to school
Take the bus
Walk
Sophomore
N
25
3
Junior
13
20
N
Senior
25
5
5
P(Walk to school | Senior ) = [?]
Round in the
Answer: 0.14
Step-by-step explanation
The required conditional probability would be 0.71.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
The conditional probability is defined as:
P(A|B) = P(A∩B)/P(B)
From the given two-way table, we get
Drive to school and senior = 25
Senior = 25+5+5
= 35
Total = 2+25+3+13+20+2+25+5+5
= 100
Now,
P( Drive to School and Senior) = 25 / 100
P( Senior) = 35/ 100
Thus,
P( Drive to School | Senior) = 25 / 35 = 0.71
Therefore, the required conditional probability would be 0.71.
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An arts academy requires there to be 5 teachers for every 125 students and 4 tutors for every 88 students. How many students does the academy have per teacher? per tutor? How many tutors does the academy need if it has 81 students? Pleaseee help
Answer:
25 students peer teacher, 22 students per tutor, 4 tutors for 81 students
Step-by-step explanation:
You need to find the unit rate,
for the teachers, to find the unit rate would be 125 divided by 5. For tutors it would be 88 divided by 4.
Then to find how many tutors you need for 81 students you would need 4 tutors because you want to divide 81 by the unit rate we got (22), and since the answer would be a decimal (3.68.....) you would need to round the whole number up to four because you cant have a decimal of a person.
1. I can wash a car in 20 minutes. How long will it take me to wash 20 cars?
2. I can type 4 words per minute. How long will it take me to write a 500 word essay?
Which equation best represents the line? (4 points)
a. y=3x + 3
b. y= 1/2x - 3
c. y= 1/2x + 3
d. y= 3x + 1/2
Answer:
y=1/2x+3, or C
Step-by-step explanation:
1. Find the slope.
To find slope, pick two coordinates and count up and over to find rise over run.
Use (-2, 2) and (0,3) for example.
Counting up and over gives you 1/2. This is your slope.
2. Look to see where the line crosses the y-axis to get the y-intercept.
Here, it crosses it at (0,3). 3 is the y-intercept.
3. The answers are written in slope-intercept form, or y=mx+b. mx represents slope and b represents the y-intercept.
y=1/2x+3
Please help ASAP!! It's due tomorrow at 745am
Answer:
L = 22 W = 4
Step-by-step explanation:
It says that the length is 6 more than 4 times its width, this means
4W + 6 = L
Perimeter is 52, this means
2W + 2L = 52
and Area is 88, this means
W*L = 88
2W = 52 - 2L
W = 26 - L
4(26 - L) + 6 = L
104 - 4L + 6 = L
104 + 6 = L + 4L
110 = 5L
L = 22
W = 26 - 22
W = 4
Which statement best represents the distance on a number line between -14 and -5?
Answer:
C my dude. have a merry christmassss
Answer:
A
Step-by-step explanation:
Both are negative, and largest is always first.
The proportion of people who respond to a certain mail-order solicitation is a random variable X having the following density function. f(x)={
3
2(x+1)
,
0,
0
elsewhere
Find σ
g(X)
2
for the function g(X)=4X
2
+2 σ
g(X)
2
= (Round to three decimal places as needed.)
To find σg(X)^2, we need to calculate the variance of the function g(X) = 4X^2 + 2, where X is a random variable with a given density function. The density function is defined as f(x) = (3/2)(x + 1) for 0 ≤ x and 0 elsewhere. By calculating the variance of g(X), we can determine the value of σg(X)^2.
To calculate the variance of g(X), we first need to find the mean of g(X), denoted as E[g(X)]. For a continuous random variable, the mean is calculated as the integral of the function multiplied by the density function. In this case, we have:
E[g(X)] = ∫(4X^2 + 2) * f(x) dx
Substituting the given density function, we have:
E[g(X)] = ∫(4X^2 + 2) * (3/2)(X + 1) dx
After simplifying and evaluating the integral, we can find the value of E[g(X)].
Next, we calculate the variance of g(X), denoted as Var[g(X)]. The variance is calculated as the expectation of the squared difference between g(X) and its mean, E[g(X)]^2. In mathematical terms:
Var[g(X)] = E[(g(X) - E[g(X)])^2]
By substituting the values of g(X) and E[g(X)], we can evaluate this expression and find the value of Var[g(X)].
Finally, to find σg(X)^2, we take the square root of Var[g(X)], i.e., σg(X) = √Var[g(X)]. After calculating Var[g(X)], we can determine the value of σg(X) to three decimal places as needed.
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How would you write 7 is subtracted from the cube of a number
Answer:
n³ - 7
Step-by-step explanation:
n³ - 7
The required expression for the 7 subtracted from the cube of a number is x³- 7.
Given that,
A string of statements is given,
Here, we have to transform the statement, 7 is subtracted from the cube of a number into a mathematical inscription.
Arithmetic, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
What is an expression?A mathmetical expression is formulated structure of a statement using variables.
Let the number be x,
Now 7 subtracted from the cube of number x
= x³ - 7
Thus, the required expression for the 7 subtracted from the cube of a number is x³- 7.
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convert to logarithmic form. PLEASE help!!!! thank you!!! *will give brainliest*
Answer:
( B ) lng = 5
Step-by-step explanation:
1.Find the period of the following functions. a) f(t) = (7 cos t)² b) f(t) = cos (2φt²/m)
Period of the functions: The period of the function f(t) = (7 cos t)² is given by 2π/b where b is the period of cos t.The period of the function f(t) = cos (2φt²/m) is given by T = √(4πm/φ). The period of the function f(t) = (7 cos t)² is given by 2π/b where b is the period of cos t.
We know that cos (t) is periodic and has a period of 2π.∴ b = 2π∴ The period of the function f(t) =
(7 cos t)² = 2π/b = 2π/2π = 1.
The period of the function f(t) = cos (2φt²/m) is given by T = √(4πm/φ) Hence, the period of the function f(t) =
cos (2φt²/m) is √(4πm/φ).
The function f(t) = (7 cos t)² is a trigonometric function and it is periodic. The period of the function is given by 2π/b where b is the period of cos t. As cos (t) is periodic and has a period of 2π, the period of the function f(t) = (7 cos t)² is 2π/2π = 1. Hence, the period of the function f(t) = (7 cos t)² is 1.The function f(t) = cos (2φt²/m) is also a trigonometric function and is periodic. The period of this function is given by T = √(4πm/φ). Therefore, the period of the function f(t) = cos (2φt²/m) is √(4πm/φ).
The period of the function f(t) = (7 cos t)² is 1, and the period of the function f(t) = cos (2φt²/m) is √(4πm/φ).
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Graph 4x +3x=11 and x=y+1 as 2 separate lines that intersect.
Answer:
Step-by-step explanation:
So first of all, you can rearrange your equations:
4x + 7x = 11 can be rearranged and simplified to x = 11/7
x = y + 1 can be rearranged to y = x - 1
Then you can graph them like normal by plugging in points. It should look like the following picture
can someone please help me
Answer:
Step-by-step explanation:
correct one is b
A line contains the points (4, 2) and (0, -1). What is the equation of the line?
D
y = 2x - 6
B
3
y = = X - 1
4
С
1
y = =X+ 1
4
D
4
-X
3
10
Answer:
y=3/4x-1 or 4y+-3x=-4
Step-by-step explanation:
If the line is (4,2) and (0,-1) then you have to first find the slope (rise-over-run) which is 3/4. The y-intercept is -1.
y=mx+b
Slope-Intercept Form:
y=(slope)x+(y-intercept)
so,
y=(3/4)x-1
Standard Form:
4y+-3x=-4
money market mutual funds provide attractive competition for bank deposits because
Money market mutual funds provide attractive competition for bank deposits because they offer potentially higher returns and greater flexibility compared to traditional bank savings accounts.
Money market mutual funds invest in short-term, low-risk securities such as Treasury bills, certificates of deposit, and commercial paper, aiming to provide a higher yield than standard savings accounts. These funds typically offer competitive interest rates and may have lower fees compared to traditional banking products. Additionally, money market mutual funds often allow investors to access their funds easily and quickly, providing greater liquidity and flexibility compared to bank deposits. This combination of potentially higher returns, lower fees, and greater flexibility makes money market mutual funds an appealing alternative for individuals seeking to maximize their returns on short-term investments.
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the grid shows the layout of jan's neighborhood . each unit on the grid represent 1.5 miles. Help
Answer:
Where's the grid?
Step-by-step explanation:
an unnormalized relation is a table that has more than one row.
An unnormalized relation refers to a table in a relational database that contains more than one row. This means that there are duplicate rows in the table, which violates the rules of normalization.
Normalization is a process in database design that aims to eliminate data redundancy and ensure data integrity. It involves breaking down a database into multiple tables and defining relationships between them. By doing so, we can efficiently store and retrieve data while minimizing inconsistencies.
In an unnormalized relation, duplicate rows can lead to various problems. For example, it can result in data inconsistencies, as updating one instance of a row may not reflect changes in other duplicate rows. Additionally, it can cause unnecessary storage and maintenance overhead.
To normalize an unnormalized relation, we need to identify the functional dependencies in the table and create separate tables for related data. This helps organize the data and reduces redundancy.
In summary, an unnormalized relation is a table in a relational database that has duplicate rows. It is important to normalize such relations to ensure data integrity and efficiency.
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What are the solutions to the system of the equations below
Step-by-step explanation:
option D is correct answer
Answer:
C
Step-by-step explanation:
\(\text{Plug} ~(x,y) = ( 2,0)~ \text{in both equations.}\\\\3*0 = 2-2\implies 0=0\\\\0 = -2(2) +4 \implies 0=0\\\\\text{Hence x =2 and y =0.}\)
evaluate the iterated integral by converting to polar coordinates. 1 0 2 − y2 5(x + y) dx dy y
We have the iterated integral:
∫
�
=
0
2
∫
�
=
1
5
5
(
�
+
�
)
(
2
−
�
2
)
�
�
�
�
∫
y=0
2
∫
x=1
5
5(x+y)(2−y
2
)dxdy
To convert this to polar coordinates, we need to express $x$ and $y$ in terms of $r$ and $\theta$. Since the region of integration is defined by $0 \leq y \leq 2$ and $1 \leq x \leq 5$, we see that $1 \leq r \leq 5$ and $0 \leq \theta \leq \pi$. Then we have:
�
=
�
cos
�
and
�
=
�
sin
�
x=rcosθandy=rsinθ
The Jacobian of the transformation is $\frac{\partial(x,y)}{\partial(r,\theta)} = r$, so we have:
\begin{align*}
\int_{y=0}^{2} \int_{x=1}^{5} 5(x+y)(2-y^2) ,dx,dy &= \int_{\theta=0}^{\pi} \int_{r=1}^{5} 5(r\cos \theta + r\sin \theta)(2 - r^2\sin^2 \theta) ,r,dr,d\theta \
&= \int_{\theta=0}^{\pi} \int_{r=1}^{5} 10r^2\cos \theta ,dr,d\theta + \int_{\theta=0}^{\pi} \int_{r=1}^{5} 10r^2\sin \theta \cos \theta ,dr,d\theta \
&\quad + \int_{\theta=0}^{\pi} \int_{r=1}^{5} 5r^3\sin \theta ,dr,d\theta - \int_{\theta=0}^{\pi} \int_{r=1}^{5} 5r^5\sin^3 \theta ,dr,d\theta \
&= \int_{\theta=0}^{\pi} \left[ \frac{10}{3}r^3\cos \theta \right]{r=1}^{r=5} ,d\theta + \int{\theta=0}^{\pi} \left[ \frac{5}{2}r^3\sin^2 \theta \right]{r=1}^{r=5} ,d\theta \
&\quad + \int{\theta=0}^{\pi} \left[ \frac{5}{4}r^4\sin \theta \right]{r=1}^{r=5} ,d\theta - \int{\theta=0}^{\pi} \left[ \frac{5}{6}r^6\sin^4 \theta \right]{r=1}^{r=5} ,d\theta \
&= \int{\theta=0}^{\pi} \frac{1240}{3}\cos \theta + \frac{60}{2}\sin^2 \theta + \frac{155}{4}\sin \theta - \frac{2480}{6}\sin^4 \theta ,d\theta \
&= \left[ \frac{1240}{3}\sin \theta - \frac{60}{2}\frac
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20 points helppp!!!
Answer:
C
Step-by-step explanation:
Answer:
C (20.25)
Step-by-step explanation:
Formula = A=\(\frac{c^2}{4\pi }\)
A=\(\frac{9^2}{4\pi }\)
A=81/4pi
Area=20.25\(\pi\) meters
PLS HELP ILL GIVE 16 points
Please tell me if it’s a right triangle or not ( ಥ _ ಥ )
6, 7, 8
10,20,30
16,18,82
22,42,60
Solve the triangle MNO
NEED ASAP
Answer:
Set your calculator to Degree mode.
The measure of angle O is 56°.
tan(34°) = ON/12
NO = 12tan(34°) = 8.09 cm
cos(34°) = 12/MO
NO = 12/cos(34°) = 14.47 cm
PLEASEEEEE help!!!!!!!!!!!!
Answer:
2st
Step-by-step explanation:
because only 34 can be divided by 17 and there arent enough of s and ts
what value of X makes the following question true
Answer:
B) 1/44
3/22 divided by 6 = 0.022727...
0.022727 as a fraction is 1/44.
Step-by-step explanation:
Hope it helps! =D
Find the missing side length
Round to the nearest tenth
The answer is 4.8
Please show all steps thank u
Answer:
x ≈ 4.8
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Trigonometry
[Right Triangles Only] SOHCAHTOA[Right Triangles Only] cos∅ = adjacent over hypotenuseStep-by-step explanation:
Step 1: Identify Variables
Angle measure = 58°
Adjacent side of angle = x
Hypotenuse = 9
Step 2: Solve for x
Substitute [cosine]: cos58° = x/9Isolate x: 9cos58° = xEvaluate: 4.76927 = xRewrite: x = 4.76927Round: x ≈ 4.8Answer:
if you have the answer then wha.
Step-by-step explanation:
Given that
R=9x+8y
Find x when y=8 and R=4
Give your answer as an improper fraction in its simplest form.
Answer:
\(-\frac{20}{3}\)
Step-by-step explanation:
\(R=9x+8y\\\\4=9x+8(8)\\\\9x+8(8)=4\\\\9x+64=4\\\\9x+64-64=4-64\\\\9x=-60\\\\\frac{9x=-60}{9} \\\\x=-\frac{60}{9}=\boxed{-\frac{20}{3}}\)
Hope this helps.
PLEASE HELP ME ASAP !!!!!!!!!!!!!!!!!
Answer:
rational numbers
Step-by-step explanation:
all numbers are rational, but not all numbers are integers or whole numbers.
The following are weights in pounds of a college sports team:
165, 171, 174, 180, 182, 188, 189, 192, 198, 202, 202, 225, 228, 235, 240
a. The mean is: _________________
b. The sample standard deviation is: _______________
c. The first quartile is: _____________
d. The median is: ______________
e. The third quartile is: ______________
Answer:
Step-by-step explanation:
a-6
b-165-240
c-165
d-182 and 152
e-174
Can you please help me?? Pls