Answer:
4th answer
Step-by-step explanation:
clearly you can see that as time spent studying goes up, test score goes up, except for the third row, which is an outlier
brainliest pls :)
Jennifer stands on a sidewalk with her bicycle and notices the air is motionless. She then rides her bicycle north at a constant speed of 5 meters per second. What should Jennifer report about the speed of the air around her as she rides her bicycle?
A. The air moves south at a constant speed equal to 5 meters per second.
B. The air moves south at a constant speed greater than 5 meters per second.
C. The air moves north at a constant speed equal to 5 meters per second.
D. The air moves north at a constant speed greater than 5 meters per second.
Question 6 of 10
The circle below is centered at the point (5, 3) and has a radius of length 4.
What is its equation?
5-
5
10
O A. (x-3)2 + (y- 5)² = 16
OB. (x+3)2 + (y + 5)² = 16
O C. (x-5)² + (y - 3)² = 16
O D. (x + 5)2 + (y+ 3)² = 16
Use the properties of logarithms to write the logarithm in terms of log7^(2) and log7^(5)
The given logarithm expression is:
\(log_750\)This can be re-written as:
\(\begin{gathered} \log_750=\log_7(2\times25) \\ \\ \log_750=\log_72\frac{}{}+\log_725 \\ \\ \log_750=\log_72+\log_75^2 \\ \\ \operatorname{\log}_750=\operatorname{\log}_72+2\operatorname{\log}_75 \end{gathered}\)The amounts of power used in an electrical maintenance shop are as follows: April, 42.2 Kilowatt-hours; May, 59.25 kilowatt-hours; June, 53.63 kilowatt-hours; July, 62.4 kilowatt-hours; August, 63.75 kilowatt-hours; September, 30.35 kilowatt-hours. What is the average monthly power usage
The average monthly power usage in the electrical maintenance shop is 51.93 kilowatt-hours.
The average monthly power usage in the electrical maintenance shop can be calculated by adding the power usage of each month and dividing by the number of months.
April: 42.2 kWh
May: 59.25 kWh
June: 53.63 kWh
July: 62.4 kWh
August: 63.75 kWh
September: 30.35 kWh
Total power usage: 42.2 + 59.25 + 53.63 + 62.4 + 63.75 + 30.35 = 311.58 kWh
Number of months: 6
Average monthly power usage: 311.58 kWh / 6 = 51.93 kWh
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T/F if the null hypothesis states that there is no difference between the mean net income of retail stores in chicago and new york city, then the test is two-tailed.
True, If the null hypothesis states that there is no difference between the mean net income of retail stores in Chicago and New York City, then the test is two-tailed.
Step-by-step explanation:
1. The null hypothesis (H0) states that there is no difference between the mean net incomes of retail stores in the two cities: H0: μ1 = μ2.
2. The alternative hypothesis (H1) would be that there is a difference between the mean net incomes: H1: μ1 ≠ μ2.
3. Since the alternative hypothesis includes both possibilities of the mean net income in Chicago being either greater or less than that in New York City, it's a two-tailed test.
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need these questions asap please help will give best review
Answer:
the picture is not coming clearly !!!
One vertex of a triangle is located at (0,5) on a coordinate
grid. After a transformation, the vertex is located at (5,0).
Which transformations could have taken place? Select
two options.
Ro, 90°
Ro, 180°
Ro, 270°
U
Ro -90°
Ro -180°
Answer: Ro, 270° and Ro -90°
Step-by-step explanation: If the vertex is at 5 on the y-axis at (0,5) and the transformation has moved the vertex to (5,0) it is now at +5 on the x-axis. This is a rotation around the origin, Rotation notation Ro.
This is fairly easy to visualize: like the hand of an analog clock moving from 12 o'clock to 3 o'clock.
In geometry, rotations are given in degrees, moving counter-clockwise. There are 360° in a circle.
Moving 3/4 of the way around the circle counterclockwise.
Multiply(3/4)(360) = 270. This is a positive rotation, counter-clockwise
Clockwise, it is 1/4 of the circle, so Multiply (1/4)(360)= 90 But remember to add the negative sign because clockwise is considered a negative rotation.
Ro, -90°
The transformations that could have taken place are Ro, 270° and Ro -90°
How to determine the transformationsThe vertex of the triangle is given as: (0,5)
After transformation, the vertex of the image is given as: (5,0)
The transformation follows the rule:
\((x,y) \to (y,x)\)
The above rule represent:
90 degrees counterclockwise rotation270 degrees clockwise rotationHence, the true statements are Ro, 270° and Ro -90°
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State the degree of the polynomial.
3x2y + 4xy + 1 − 5x4y − 6y,
Answer:
The degree of the given polynomial is 5
Step-by-step explanation:
The degree of a polynomial is the highest of the degrees of its monomials with non-zero coefficients.
The degree of a monomial is the sum of the exponents of the variables that appear in it.
We have the following polynomial:
\(3x^2y + 4xy + 1 - 5x^4y - 6y\)
Degree of the first monomial: 2+1=3
Degree of the next monomial: 1+1=2
Degree of the next monomial: 0
Degree of the next monomial: 4+1=5
Degree of the next monomial: 1
Thus, the degree of the given polynomial is 5
The simple interest on a certain sum at 5% per annum for 3 years and 4years differ by rupees 82 find the sum
The principal sum is Rs. 1640 if the difference in simple interest between 3 years and 4 years is Rs. 82 at a rate of 5% per annum.
Let x be the principal sum. According to the problem, the difference in simple interest between 3 years and 4 years is Rs. 82. This means that the interest earned in the fourth year is Rs. 82 more than the interest earned in the third year.
Using the formula for simple interest, we can calculate the interest earned in each year:
Simple interest for 3 years = (x * 5% * 3) = 0.15x
Simple interest for 4 years = (x * 5% * 4) = 0.2x
The difference between the two is:
0.2x - 0.15x = 0.05x
We are given that this difference is equal to Rs. 82, so:
0.05x = 82
Solving for x, we get:
x = 82 / 0.05 = 1640
Therefore, the principal sum is Rs. 1640.
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What is the amount in the account after 4 yrs , rounded to the nearest dollar
We have the next formula
\(f(x)=350(1+0.03)^x\)where x us the number of years, in this case x= 4
\(f(4)=350(1+0.03)^4=393.92\)rounded to the nearest dollar is $394 is the amount in the account after 4 years.
(PLEASE HELP ME)
Which of the following equations is correct?
Please help me thank you so much!!
Answer:
B
Step-by-step explanation:
Distributive property: a*(b + c)= (a*b) + (a*c)
\(\frac{3}{4}*(\frac{1}{2}+\frac{-2}{5})=\frac{3}{4}*\frac{1}{2}+\frac{3}{4}*\frac{-2}{5}\\\\=\frac{3}{8}+\frac{-6}{20}\\\\=\frac{3*5}{8*5}+\frac{-6*2}{20*2}\\\\=\frac{15}{20}+\frac{-12}{40}\\\\=\frac{15-12}{40}\\\\=\frac{3}{40}\)
hey! please help i’ll give brainliest
Answer:
The answer is D
Step-by-step explanation:
If and Then are italicized
Solve the system by elimination.
2x+y=4
-2x+2y=5
Answer:
Below
Step-by-step explanation:
2x+y=4
-2x+2y=5 If you add these two equations, 'x' will be 'eliminated'
3y = 9 then y = 3 2x + y =4 shows x = 1/2
A nursery owner buys 5 panes of glass to fix some damage to her greenhouse. The 5 panes cost $12.2. she breaks 2 more panes while repairing the damage. What is the cost of another 2 panes of glass?
The cost of the other 2 panes of glass is $5.70. If this is wrong, I am sorry :( Have a great day!
What is the sixth term of (2x^2-3y)^8
The sixth term of the binomial expansion (2x² -3y)⁸ as required in the task content is; -108,864x⁶y⁵.
What is the sixth term of the given binomial expansion?Binomials refers to a polynomial with two terms.
It follows from the task content that the sixth term of the given binomial expansion is to be determined.
Since the binomial expansion is; (2x² -3y)⁸, it follows that there would be 8 terms.
The sixth term is therefore such that; the coefficient is; ⁸C⁵ = 56.
Therefore, the sixth term is; 56•(2x²)³•(-3y)⁵
= -108,864x⁶y⁵.
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Can someone help me with this Question.
The formula we need to use is given above. In this formula, we will substitute the desired values. Let's start.
\(P=3W+D\)A) First, we can start by analyzing the first premise. The team has \(8\) wins and \(5\) losses. It earned \(8 \times 3 = 24\) points in total from the matches it won and \(1\times5=5\) points in total from the matches it drew. Therefore, it earned \(24+5=29\) points.
B) After \(39\) matches, the team managed to earn \(54\) points in total. \(12\) of these matches have ended in draws. Therefore, this team has won and lost a total of \(39-12=27\) matches. This number includes all matches won and lost. In total, the team earned \(12\times1=12\) points from the \(12\) matches that ended in a draw.
\(54-12=42\) points is the points earned after \(27\) matches. By dividing \(42\) by \(3\) ( because \(3\) points is the score obtained as a result of the matches won), we find how many matches team won. \(42\div3=14\) matches won.
That leaves \(27-14=13\) matches. These represent the matches team lost.
Finally, the answers are below.
\(A)29\)
\(B)13\)
Answer:
a) 29 points
b) 13 losses
Step-by-step explanation:
You want to know points and losses for different teams using the formula P = 3W +D, where W is wins and D is draws.
A 8 wins, 5 drawsThe number of points the team has is ...
P = 3W +D
P = 3(8) +(5) = 29
The team has 29 points.
B 54 pointsYou want the number of losses the team has if it has 54 points and 12 draws after 39 games.
The number of wins is given by ...
P = 3W +D
54 = 3W +12
42 = 3W
14 = W
Then the number of losses is ...
W +D +L = 39
14 +12 +L = 39 . . . substitute the known values
L = 13 . . . . . . . . . . subtract 26 from both sides
The team lost 13 games.
__
Additional comment
In part B, we can solve for the number of losses directly, using 39-12-x as the number of wins when there are x losses. Simplifying 3W +D -P = 0 can make it easy to solve for x. (In the attached, we let the calculator do the simplification.)
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4 thumb drives and 1 compact disk have a
total capacity of 18 gigabytes. 3 compact
disks and 4 thumb drives have a total
capacity of 22 gigabytes. Find the capacity
of 1 thumb drive (x) and the capacity of 1
compact disk (y).
The capacity of thumb drive disc is 4 gigabytes and the capacity of compact disc is 2 gigabytes.
How to calculate the equation?Let thumb drive = (x)
Let the capacity of 1 compact disk = (y).
Therefore, the appropriate equation will be:
4x + y = 18
4x + 3y = 22
Subtract the equations
2y = 4
y = 4/2
y = 2
The capacity of compact disc is 2 gigabytes.
Since 4x + y = 18
4x + 2 = 18
4x = 18 - 2
4x = 16
x = 16/4
x = 4
The capacity of thumb drive disc is 4 gigabytes.
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Solve by square root. (X-8)*2-7=25 *2 is an exponent
The solution is X =13.66.
What is Square root?A square root of a number is a value that, when multiplied by itself, gives the number. In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square is x.
For example, 4 and −4 are square roots of 16, because 4² = ² = 16.
here, we have,
given that,
(X-8)^2-7=25
(X-8)^2= 25+7
(X-8)^2=32
by, thaking sq.root both side we get,
(X-8)= √32
X= 5.66+8
X =13.66
Hence, The solution is X =13.66.
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Fill in the blank.
5
3
[ ? ](A) =
=
3
4
A
4
A. sin
B. COS
C. tan
Answer:
sin A = 3/5
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp side/ hypotenuse
sin A = 3/5
Answer:
A. sin
Step-by-step explanation:
Hi there!
\(\sin\theta=\displaystyle\frac{opposite}{hypotenuse}\)
\(\cos\theta=\displaystyle\frac{adjacent}{hypotenuse}\)
\(\tan\theta=\displaystyle\frac{opposite}{adjacent}\)
Given the angle A, the opposite side would measure 3 units, the adjacent side would measure 4 units and the hypotenuse would measure 5 units.
If the ratio is \(\displaystyle\frac{3}{5}\), it means it is a ratio between the opposite side and the hypotenuse. Therefore, it is using the sine ratio.
\(\sin A=\displaystyle\frac{3}{5}\)
I hope this helps!
A high school student has deposited $850 in a savings account that earns interest at a rate of 2.9% compounded monthly. What will the account balance be in seven years? Round the answer to the nearest hundredths place.
$864.48
$1,041.06
$6,317.60
$9,382.32
The account balance in seven years will be $9,382.32.
What is balance?Balance in math is the idea of equal parts on either side of a given equation. The concept of balance is used in algebraic equations and inequalities where the two sides of the equation must be equal in order for the equation to be true. Balance is an important concept to learn in math, as it is used to solve many problems. Balance can also be used in geometry to understand symmetry and shapes, as well as in calculus to understand derivatives and integrals. Balance is a fundamental concept in math that can be used in a variety of ways.
This can be calculated by multiplying the initial deposit of $850 by (1 + 0.029/12)^84, which is equal to 9,382.3198.
After rounding to the nearest hundredths place, the answer is $9,382.32.
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Answer:
$1,041.06
Step-by-step explanation:
Got it right.
solve the differential equation xy ′ = y xe^6y⁄x by making the change of variable v = y/x
To solve the given differential equation xy' = yxe^(6y/x) using the change of variable v = y/x, we can transform the equation into a separable form.
We start by differentiating both sides of the change of variable v = y/x with respect to x to obtain dv/dx = (y'x - y)/x^2. Substituting y = vx into the given differential equation, we have x(dy/dx) = vxe^(6vx/x). Simplifying the equation yields v + x(dv/dx) = vxe^(6v). Rearranging the terms, we have x(dv/dx) = v(xe^(6v) - 1). This equation can be separated into variables by dividing both sides by v(xe^(6v) - 1). We obtain (1/v)dv = (1/x)(xe^(6v) - 1)dx.
Integrating both sides of the equation gives ∫(1/v)dv = ∫(1/x)(xe^(6v) - 1)dx. Integrating the left side yields ln|v| = ∫(1/x)(xe^(6v) - 1)dx. On the right side, we can simplify the integral by distributing and canceling terms, resulting in ln|v| = ∫(e^(6v) - 1)dx. Evaluating the integral, we have ln|v| = xe^(6v) - x + C, where C is the constant of integration.
Finally, we substitute v = y/x back into the equation. We get ln|y/x| = xe^(6(y/x)) - x + C, which can be further simplified as ln|y| - ln|x| = xe^(6(y/x)) - x + C. Rearranging the terms, we arrive at ln|y| = xe^(6(y/x)) - x + C + ln|x|. The final solution is given by ln|y| = xe^(6(y/x)) + ln|x| + C.
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Could two samples have the same range but different means? Explain. surements: nedian: n (ne The standard deviation indicates how measurements vary about the mean. The standard deviation is easy t0 cal- culate. Begin by calculating the mean, measuring the devia- tion of each sample from the mean, squaring each deviation and tnen summing the deviations. This summation results in the sum of squared deviations. For example, consider group of shrimp that are 22, 19, 18, and 21 cm long: The mean length of these shrimp is 20 cm: leaf eaf was Mean Deviation (Deviation} Sample Value
Yes, two samples can have the same range but different means. The range of a dataset is a measure of the spread or dispersion and is determined by the difference between the maximum and minimum values. The mean, on the other hand, represents the average value of the dataset.
To illustrate this concept, let's consider two different samples:
Sample 1: 1, 5, 6, 9, 10
Sample 2: 2, 4, 7, 8, 10
Both samples have a range of 9 (10 - 1).
However, the means of the samples are different. The mean of Sample 1 is
(1 + 5 + 6 + 9 + 10) / 5 = 6.2,
while the mean of Sample 2 is
(2 + 4 + 7 + 8 + 10) / 5 = 6.2.
Despite having the same range, the means differ between the two samples.
The range only considers the extreme values of the dataset, whereas the mean takes into account all values and provides an average measure. It is possible for the individual values within the samples to be distributed differently, resulting in different means, even if the range remains the same.
Therefore, the range and the mean are distinct measures that capture different aspects of the dataset. While it is possible for two samples to have the same range, they can still have different means based on the specific values and their distribution within each sample.
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Explain why this study can be analyzed using the methods for conducting a hypothesis test regarding two independent proportions. Select all that apply.
A.
The data come from a population that is normally distributed.
B.
n1p11−p1≥10 and n2p21−p2≥10
C.
The sample size is less than 5% of the population size for each sample.
D.
The sample size is more than 5% of the population size for each sample.
E.
The samples are independent.
F.
The samples are dependent.
The correct options for analyzing the study using the methods for conducting a hypothesis test regarding two independent proportions are:
B. n1p11−p1≥10 and n2p21−p2≥10
E. The samples are independent.
Explanation:
A. The assumption of normal distribution is not required for conducting a hypothesis test regarding two independent proportions. Therefore, option A is incorrect.
C. The sample size being less than 5% of the population size for each sample is not a requirement for analyzing the study using the methods for conducting a hypothesis test regarding two independent proportions. Therefore, option C is incorrect.
D. The sample size being more than 5% of the population size for each sample is also not a requirement for analyzing the study using the methods for conducting a hypothesis test regarding two independent proportions. Therefore, option D is incorrect.
E. The independence of the samples is a crucial assumption for conducting a hypothesis test regarding two independent proportions. If the samples are not independent, then different methods need to be used. Therefore, option E is correct.
F. The samples being dependent is not consistent with the assumption for conducting a hypothesis test regarding two independent proportions. If the samples are dependent, different methods need to be used. Therefore, option F is incorrect.
The correct options are B and E.
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a bag of chocolates is labeled to contain 0.384 pounds of chocolate. the actual weight of the chocolates is 0.3798 pounds. how much lighter is the actual weight?
The actual weight is 0.0042 pounds lighter than the labeled weight.
The actual weight of the chocolates is 0.3798 pounds, while the label on the bag states it should weigh 0.384 pounds. To determine how much lighter the actual weight is, we can calculate the difference between the two weights.
Subtracting the actual weight from the labeled weight, we get:
0.384 pounds - 0.3798 pounds = 0.0042 pounds.
Therefore, the actual weight is 0.0042 pounds lighter than the labeled weight.
It's important to note that this difference may seem small, but it can be significant depending on the context. Accuracy in labeling is crucial for various reasons, such as complying with regulations, providing precise information to consumers, and ensuring fair trade practices. Even minor discrepancies can impact trust and customer satisfaction.
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Question 4: Linearize x** + 2x* + 2x^2 - 12x + 10 = 0. Around its equilibrium position
The linearized equation around its equilibrium position is given as;f(x) = -4.8(x - 1.39)
The given equation is x² + 2x* + 2x² - 12x + 10 = 0.
It needs to be linearized around its equilibrium position.
Linearizing the given equation around its equilibrium position x0, we have;
f(x) = f(x0) + f'(x0)(x - x0)
Where f(x) = x² + 2x* + 2x² - 12x + 10
The equilibrium position is the point where f(x) = 0.
Hence, f(x0) = 0.
Thus, x² + 2x* + 2x² - 12x + 10 = 0⇒ 3x² - 6x = -10⇒ x² - 2x + (2.33) = 0(x-1)² = 0.77x - 0.77 or
x = 1 + (0.77)/(2) or x = 1.39
Hence, the equilibrium position x0 = 1.39.
Substitute x0 = 1.39 in the equation and simplify to get f'(x0):
f(x) = x² + 2x* + 2x² - 12x + 10
f(x) = 3.84 - 8.34 + 10
f'(x0) = f'(1.39) = -4.8
Therefore, the linearized equation around its equilibrium position is given as;f(x) = -4.8(x - 1.39)
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Please help hurry!
Find the lateral surface area of the instant oatmeal container. Round your answer to the nearest hundredth.
SA = in2
Answer:
≈ 145.23 in²Step-by-step explanation:
The lateral surface area is:
SA = 2πrh = 2*3.14*2.5*9.25 ≈ 145.23 in²\(\\ \tt\longmapsto SA=2\pi rh[[/te]
\(\\ \tt\longmapsto SA=2\times 22}{7}\times (2.5)(9.25)\)
\(\\ \tt\longmapsto SA=145.23in^2\)
What begins with T, ends with T, and has T in it?
Answer: A teapot.
Step-by-step explanation:
2. Is she right or wrong? Explain. If she is wrong, tell how much carpet she needs. (
Michele is buying carpet for a room with the dimensions shown. 10 ft 8 ft 12 ft 4 ft 15 ft Michele calculates that the area she will cover with carpet is 180 square feet.
Answer:
She is wrong. She needs 140 square feet.
Explanation:
(8×10)+(4×15) = 140
Please help! I don’t know what to do!
Answer:
She payed $29.60
Step-by-step explanation:
Expression: 12.36•2+1.98/2+3.49+.40
To solve this expression, we need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). However, in this expression, there are no parentheses or exponents, so we can start by performing the multiplication and division, and then the addition:
12.36•2 + 1.98/2 + 3.49
= 24.72 + 0.99 + 3.49+.40 (performing multiplication and division)
= 29.6 (adding the results)Therefore, the final result of the expression 12.36•2+1.98/2+3.49+.40 is 29.6.
Answer: $30
Step-by-step explanation:
2 packages of Chicken = $12.36 x 2 = $24.72
1/2 pound of broccoli = 1/2 x $1.98 = $0.99
1 Gallon of milk = 1 x $3.49 = $3.49
Add all of these together along with the extra $0.80
$24.72 + $0.99 + $3.49 + $0.80 = $30
Here you go!
What is the formula to find an endpoint when you are given one endpoint and the midpoint?
example: Find the missing endpoint if S is the midpoint RT.
R(-9, 4) and S(2, -1); Find T
Answer:
Step-by-step explanation:
If S is the midpoint of R and S and the coordinate R(-9, 4) and S(2, -1), we are to find T.
Usimg the midpoint formula;
\(M(X, Y) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})\\ where; X = \frac{x_1+x_2}{2}\\Y = \frac{y_1+y_2}{2}\)
Given \(x_1 = -9, y_1 = 4, X = s \ and \ Y = -1\), to get the other coordinate T (x2, y2), we will use the formula above as shown;
\(X = \frac{x_1+x_2}{2}\\2 = \frac{-9+x_2}{2}\\cross \ multiply\\2*2 = -9+x_2\\4 = -9+x_2\\x_2 = 4+9\\ x_2 = 13\)
Similarly to get y2;
Y = y1+y2/6
-1 = 4+y2/2
cross multiply
-1*2 = 4+y2
-2 = 4+y2
y2 = -2-4
y2 = -6
Hence the coordinate T is (13, -6)