hi! i need help, please.
Answer:
39.3
Step-by-step explanation:
Next to it you would put 0/100 so it would be like 0/100 next to 11/28. You then times 11 by 100 and divide it by 28.
Answer:
39% (40 % rounded)
Step-by-step explanation:
Divide 11 by 28 (0.39285714 but you can round to 0.39)
Multiply 0.39 by 100
You get 39 and you can round to 40
hope this helps!
I've been stuck on this for a bit, and I'm still figuring this out in the process. a little help?
Steps to solve:
4x + 1/3y^2 when x = 2 and y = 3
~Substitute
4(2) + 1/3(3)^2
~Simplify
8 + 1/3(9)
~Simplify
8 + 3
~Add
11
Best of Luck!
The first five terms of an arithmetic sequence are shown below:
20, 17, 14, 11, 8, . . .
Let n represent the term number and f(n) the term in the sequence.
The function
represents the sequence.
Answer:
The function f(n) = 20 - 3n represents the sequence.
Answer:
A
Step-by-step explanation:
the data in attend for this exercise. (i) obtain the minimum, maximum, and average values for the variables andre, pri gpa, and act. (ii) estimate the model atenderte 5 b0 1 b1 prigpa 1 b2act 1 u, and write the results in equation form. interpret the intercept. does it have a useful meaning? (iii) discuss the estimated slope coefficients. are there any surprises? (iv) what is the predicted atenderte if prigpa 5 3.65 and act 5 20? what do you make of this result? are there any students in the sample with these values of the explanatory variables? (v) if student a has prigpa 5 3.1 and act 5 21 and student b has prigpa 5 2.1 and act 5 26, what is the predicted difference in their attendance rates?
(i) The average values for the variables andre, pri gpa, and act is sum of all the values divided by the total number of values.
(ii) The model atenderte 5 b0 1 b1 prigpa 1 b2act 1 u in equation form is atenderte = b₀ + b₁ x prigpa + b₂ x act + u
(iii) The slope coefficients is b₁ and b₂
(iv) The predicted atenderte if prigpa 5 3.65 and act 5 20 is atenderte = b₀ + b₁ x 3.65 + b₂ x 20 + u
(v) if student a has prigpa 5 3.1 and act 5 21 and student b has prigpa 5 2.1 and act 5 26, then the predicted difference in their attendance rates is 0.5
In this exercise, we will be exploring a regression model that predicts the attendance rate of students based on their academic performance variables. We will be using three variables to predict the attendance rate: "andre", "pri gpa", and "act". Here are the answers to the questions:
(i) To obtain the minimum, maximum, and average values for the variables "andre", "pri gpa", and "act", we need to first look at the data. The minimum value is the smallest value for each variable, the maximum value is the largest value for each variable, and the average value is the sum of all the values divided by the total number of values.
(ii) The regression model that predicts the attendance rate is written in equation form as
=> "atenderte = b₀ + b₁ x prigpa + b₂ x act + u".
This equation means that the predicted attendance rate (atenderte) is equal to the intercept (b₀) plus the product of the coefficient for "pri gpa" (b₁) and the value of "pri gpa" plus the product of the coefficient for "act" (b₂) and the value of "act".
(iii) The estimated slope coefficients (b₁ and b₂) tell us the expected change in the attendance rate for each one-unit increase in "pri gpa" or "act". If b₁ is positive, it means that as "pri gpa" increases, the attendance rate is expected to increase. Similarly, if b₂ is positive, it means that as "act" increases, the attendance rate is expected to increase.
(iv) To find the predicted attendance rate if "pri gpa" is 3.65 and "act" is 20, we can substitute these values into the regression equation:
atenderte = b₀ + b₁ x prigpa + b₂ x act + u
atenderte = b₀ + b₁ x 3.65 + b₂ x 20 + u
This will give us the predicted attendance rate for a student with "pri gpa" of 3.65 and "act" of 20. If there are any students in the sample with these values of the explanatory variables, then their actual attendance rate should be close to the predicted value.
(v) To find the predicted difference in attendance rates between student A (with "pri gpa" of 3.1 and "act" of 21) and student B (with "pri gpa" of 2.1 and "act" of 26), we can first use the regression equation to predict the attendance rates for each student:
Student A:
atenderteA = b0 + b1 x 3.1 + b2 x 21 + u
Student B:
atenderteB = b0 + b1 x 2.1 + b2 x 26 + u
Then, we can take the difference between the predicted attendance rates for each student:
=> atenderteA - atenderteB
=> 52.6 - 52.1 = 0.5
This will give us the predicted difference in attendance rates between the two students.
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What is 4x + 11 < -21 on a number line
Answer: x <- -8
x is less than negative eight.
Step-by-step explanation:
First, subtract 11 from both sides. Then divide both sides by 11. The arrow should be open and pointing to the left.
Answer:
x <- -8
Step-by-step explanation:
I need help can u plz help me
Answer:
C
Step-by-step explanation:
Chicago is above -6F coming in at -4F, making Chicago the hottest place out of the four.
25. The manager of a coffee shop has Costa Rican coffee that sells for $7 per pound and Kenyan coffee that sells for $10
per pound. The manager wishes to mix 80 pounds of the Kenyan coffee with the Costa Rican coffee to get a mixture that
will sell for SS per pound. How many pounds of the Costa Rican coffee should be used?
The Costa Rican coffee should be used is 160 pound.
What is a linear equation?
A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."
Given that the cost of Costa Rican coffee that sells for $7 per pound and Kenyan coffee that sells for $10.
The cost of the mixture is $8.5 per pound.
Assume that the manager mixed 80 pounds of the Kenyan coffee with the x pound of the Costa Rican coffee to get a mixture.
The cost of 80 pound Kenyan coffee is $(80×10) = $800.
The cost of x pound Costa Rican coffee is 7x.
The cost of mixture coffee is (80 + x)8.5
According to the question:
800 + 7x = (80 + x)8
800 + 7x = 640 + 8.x
640 + 8x = 800 + 7x
x = 800 - 640
x = 160
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SS ZONE
Block 5> Topic 3> Applications of Percent
Dre is painting a mural for his school.
Each can of spray paint costs $5 before
sales tax. The sales tax rate is 10%.
Plot a point that represents how Dre can
spend money on spray paint.
Cost Including Sales Tax (5)
132
88
44
20
40
60
Cost Before Sales Tax ($)
A point that represents how Dre can spend money on spray paint is plotted on the proportional relationship graphed at the end of the answer.
How to model the money spent?The money spent after sales tax is obtained multiplying the money spent before sales tax by a constant, hence a proportional relationship models the situation.
The general format of a proportional relationship is given as follows:
y = kx.
In which k is the constant of proportionality.
In this problem, the sales tax rate is of 10%, meaning that the total amount paid is composed as follows:
Cost before sales tax.10% of the cost before sales tax.Considering x as the cost before sales tax, the equation is given as follows:
y = x + 0.1x
y = 1.1x.
Meaning that one point is given as follows:
(5,5.5).
Meaning that when the cost before sales tax is of $5, the cost including sales tax is of $5.5.
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Please solve this as soon as possible
Answer:
Equation: (14.50-10)/0.15
Stanley has do 30 extra messages.
\( \frac{(14.5 - 10)}{0.15} \)
Roger Marl wung a bat which had a ma of 2kg at a velocity of 45m/. How many joule of kinetic energy could he give to the ball
Total kinetic energy that is generated will be 2025 joules
What is kinetic energy?
The K.E. of an object is that the energy that it possesses because of its motion. it's outlined because the work required to accelerate a body of a given mass from rest to its expressed velocity.
Main body:
According to question :
mass = 2 kg
velocity = 45 m/s
formula for kinetic energy = (1/2) mv²
substituting these values in formula,
K.E. = (1/2) 2* 45²
K.E. = 45²
K.E. = 2025 joules.
Hence kinetic energy generated is 2025 joules.
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Brooklyn is a waitress at a restaurant. Each day she works, Brooklyn will make a guaranteed wage of $30, however the additional amount that Brooklyn earns from tips depends on the number of tables she waits on that day. From past experience, Brooklyn noticed that she will get about $9 in tips for each table she waits on. How much would Brooklyn expect to earn in a day on which she waits on 17 tables? How much would Brooklyn expect to make in a day when waiting on t tables?
Earnings for 17 tables:
Earnings for t tables:
!!!!!!!!!!!! Help please
Answer:
Yes it is a solution
Step-by-step explanation:
2*0=0
3*2=6
Answer:
Yes, it is a solution.
Step-by-step explanation:
(2·0) + (3·2) = 0 + 6 = 6
what is 47 times 23 ?
Answer:
1081
Step-by-step explanation:
Answer:
1,081 its this number
Diego thinks that x = 3 is a solution to the equation x² = 16. Do you agree?Explain or show your reasoning. *Yes, he is correct.No, he is incorrect. The answer should be 6.No, he is incorrect. The answer should be 9.None of the above
ANSWER
D. None of the above
EXPLANATION
We want to determine if x = 3 is the solution to the equation given:
\(x^2=16\)To solve this equation, we have to find the square root of both sides of the equation (the solution will consist of a negative and positive number):
\(\begin{gathered} x=\sqrt[]{16} \\ \Rightarrow x=+4;x=-4 \end{gathered}\)Therefore, Diego is incorrect but none of the reasons stated is correct.
Hence, the answer is None of the above.
At a prize of Rs. 10 per unit the demand of a commodity is 200 units. Its prize elasticity of demand is (-)1×5. At what prize will the demand be 250 units?
Ans- Given:- 200 units at the rate of Rs. 10/units
250 units at the rate of ?
Ep=-1.5
So, quality demanded price
200 10
250 x
Ep = ∆Q/∆P × P/Q
= 50/10-x = 10/200 = 1.5
= 5 = -1.5×2(10-x)
= x = 11.66
So, at 11.66 per unit 250 units will be demanded.
250 units would be demanded when price is $11.67.
What is price elasticity of demand?Price elasticity of demand measures the responsiveness of quantity demanded to changes in price of the good.
Price elasticity of demand = percentage change in quantity demanded / percentage change in price
What is the price?Percentage change in the quantity demanded = (250 / 200) - 1 = 25%
Percentage change in price = 25% / 1.5 = 16.67
Price = (1 + 0.1667) x 10 = 11.67
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|9-(-1)|= simplify the expression
Answer:
10
Step-by-step explanation:
Remove parentheses.
|9+1|
Simplify 9+1 to 10.
|10|
simplify
10
1. what is the height of the cone? Explain how you found the height.
2. Now that you have the height of the cone, how can you solve for the slant height, s?
3. Now that you have the height of the cone, how can you solve for the slant height, s?
1. The height of the cone is equal to
2. You can solve for the slant height, s by applying Pythagorean's theorem.
3. To get from the base of the cone to the top of the hill, an ant has to crawl 29 mm.
How to calculate the volume of a cone?In Mathematics and Geometry, the volume of a cone can be calculated by using this formula:
Volume of cone, V = 1/3 × πr²h
Where:
V represent the volume of a cone.h represents the height.r represents the radius.By substituting the given parameters into the formula for the volume of a cone, we have the following;
8792 = 1/3 × 3.14 × 20² × h
26,376 = 3.14 × 400 × h
Height, h = 26,376/1,256
Height, h = 21 mm.
Question 2.
In order to solve for the slant height, s, we would have to apply Pythagorean's theorem since the height of the cone has been calculated above.
Question 3.
By applying Pythagorean's theorem, we have the following:
r² + h² = s²
20² + 21² = s²
400 + 441 = s²
s² = 841
Slant height, s = √841
Slant height, s = 29 mm.
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\( \huge \quad \: \bf \: Question : \)
Differentiate the following equations and write coefficients of terms in form of English alphabets. [ like : 12 = L ]
1st :
\( \rm \dfrac{d}{dx} ({x}^{2} ) = \)
Required English Alphabet = ?
2nd :
\( \rm \dfrac{d}{dx} (3{x}^{5} ) = \)
Required English Alphabet = ?
3rd :
\( \rm \dfrac{d}{dx} (9{x}^{2} ) = \)
Required English Alphabet = ?
4th :
\( \rm \dfrac{d}{dx} (3{x}^{3} ) = \)
Required English Alphabet = ?
5th :
\( \rm \dfrac{d}{dx} (2{x}^{7} ) = \)
Required English Alphabet = ?
6th :
\( \rm \dfrac{d}{dx} ({x}^{7} ) = \)
Required English Alphabet = ?
Next : Write the Alphabets in order of questions ~
Answer should be in this format :
" (1st 2nd 3rd 4th 5th 6th) "
The differentiation of the given equations is \(\frac{d}{dx}x^{2}=2x\).
Given that, \(\frac{d}{dx}x^{2}\).
What is the differentiation?The process of finding derivatives of a function is called differentiation in calculus. A derivative is the rate of change of a function with respect to another quantity.
Differentiate using the Power Rule which states that \(\frac{d}{dx}x^{n}=nx^{n-1}\).
1) \(\frac{d}{dx}x^{2}=2x\)
2) \(\frac{d}{dx}(3x^{5})=15x^4\)
3) \(\frac{d}{dx}(9x^{2})=18x\)
4) \(\frac{d}{dx}(3x^{3})=9x^{2}\)
5) \(\frac{d}{dx}(2x^{7})=14x^6\)
6) \(\frac{d}{dx}(x^{7})=7x^6\)
Therefore, the differentiation of the given equations is \(\frac{d}{dx}x^{2}=2x\).
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Three quarts of a latex enamel paint will cover about 120 square feet of wall surface. How many quarts are needed to cover 161 square feet of kitchen wall and 119 square feet of bathroom wall? Nothing quarts of a latex enamel paint are required
Answer:
7 quarts
Step-by-step explanation:
We can solve this problem by using the rule of three. As seen in the picture below we need to find the X. We do this by multiplying 161 sq. ft. diagonally by 3 quarts and then dividing by 120 sq. ft. This will give us the number of quarts needed for the kitchen wall. Then we simply repeat the process for the bathroom wall and we are done. Like so ...
\(\frac{161 sq. ft. * 3 quarts}{120 sq. ft.} = x\)
\(4.025 quarts = x\)
\(\frac{119sq. ft. * 3 quarts}{120 sq. ft} = x\)
\(2.975 quarts = x\)
Therefore we need 4.025 quarts for the kitchen wall and 2.975 quarts for the bathroom wall ... making that a total of 7 quarts.
I NEED HELPPP ON THIS PLZZZ
Answer:
Perimeter of ABCD = 56 units
Perimeter of WXYZ = 140 units
Step-by-step explanation:
To find the perimeter of ABCD, find the sum of all sides
18 + 18 + 10 + 10 = 56
To find the side lengths of WXYZ, use the equation: \(\frac{image}{pre-image}\)
45/18 = 2.5
You can also cross multiply to find the missing side lengths, but I'll show you this other way...
Multiply the pre-image side lengths by 2.5
18 × 2.5 = 45
10 × 2.5 = 25
45 and 25 of the new side length of WXYZ
To find the perimeter of WXYZ, find the sum of all sides.
45 + 45 + 25 + 25 = 140
WX = 45, XY = 25, YZ = 45, ZW = 25
I REALLY NEED HELP PLEASE HELP ME
Answer:
52^8
Step-by-step explanation:
26^8 = 208827064576 + 26
Solve dy/dx=1/3(sin x − xy^2), y(0)=5
The general solution to the differential equation dy/dx = 1/3(sin x − xy^2), y(0)=5 is: y = ±√[(sin x - e^(x/2)/25)/x], if sin x - xy^2 > 0 and y(0) = 5
To solve this differential equation, we can use separation of variables.
First, we can rearrange the equation to get dy/dx on one side and the rest on the other side:
dy/dx = 1/3(sin x − xy^2)
dy/(sin x - xy^2) = dx/3
Now we can integrate both sides:
∫dy/(sin x - xy^2) = ∫dx/3
To integrate the left side, we can use substitution. Let u = xy^2, then du/dx = y^2 + 2xy(dy/dx). Substituting these expressions into the left side gives:
∫dy/(sin x - xy^2) = ∫du/(sin x - u)
= -1/2∫d(cos x - u/sin x)
= -1/2 ln|sin x - xy^2| + C1
For the right side, we simply integrate with respect to x:
∫dx/3 = x/3 + C2
Putting these together, we get:
-1/2 ln|sin x - xy^2| = x/3 + C
To solve for y, we can exponentiate both sides:
|sin x - xy^2|^-1/2 = e^(2C/3 - x/3)
|sin x - xy^2| = 1/e^(2C/3 - x/3)
Since the absolute value of sin x - xy^2 can be either positive or negative, we need to consider both cases.
Case 1: sin x - xy^2 > 0
In this case, we have:
sin x - xy^2 = 1/e^(2C/3 - x/3)
Solving for y, we get:
y = ±√[(sin x - 1/e^(2C/3 - x/3))/x]
Note that the initial condition y(0) = 5 only applies to the positive square root. We can use this condition to solve for C:
y(0) = √(sin 0 - 1/e^(2C/3)) = √(0 - 1/e^(2C/3)) = 5
Squaring both sides and solving for C, we get:
C = 3/2 ln(1/25)
Putting this value of C back into the expression for y, we get:
y = √[(sin x - e^(x/2)/25)/x]
Case 2: sin x - xy^2 < 0
In this case, we have:
- sin x + xy^2 = 1/e^(2C/3 - x/3)
Solving for y, we get:
y = ±√[(e^(2C/3 - x/3) - sin x)/x]
Again, using the initial condition y(0) = 5 and solving for C, we get:
C = 3/2 ln(1/25) + 2/3 ln(5)
Putting this value of C back into the expression for y, we get:
y = -√[(e^(2/3 ln 5 - x/3) - sin x)/x]
So the general solution to the differential equation dy/dx = 1/3(sin x − xy^2), y(0)=5 is:
y = ±√[(sin x - e^(x/2)/25)/x], if sin x - xy^2 > 0 and y(0) = 5
y = -√[(e^(2/3 ln 5 - x/3) - sin x)/x], if sin x - xy^2 < 0 and y(0) = 5
Note that there is no solution for y when sin x - xy^2 = 0.
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1.10.3 Test (CST): Coordinate Geometry
Question 10 of 25
What is the area of a square with sides of length 9?
A. 54 square units
B. 81 square units
C. 36 square units
O D. 18 square units
SUBMIT
The area of a square with sides of length 9 is 81 square units.
What is an area?Area is defined as the total space taken up by a flat (2-D) surface or shape of an object.
The space enclosed by the boundary of a plane figure is called its area.
The area of a figure is the number of unit squares that cover the surface of a closed figure.
Given that, a square with side length of 9 units, we need to find its area, We know that, the area of a square is given by the square of it side, so Area = side²
Area of the given square = 9²
= 9 x 9
= 81 sq. units
Hence. the area of a square with sides of length 9 is 81 square units.
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4350 g = how many kilograms
Answer:
4.35
Step-by-step explanation:
Answer:
4.35 kilo
Step-by-step explanation:
the radius of a circle is 10 centimeters. what is the area
an emergency room nurse believes the number of upper respiratory infections is on the rise. the emergency room nurse would like to test the claim that the average number of cases of upper respiratory infections per day at the hospital is over 21 cases. using the computed test statistic of 2.50 and the critical value of 2.33, is there enough evidence for the emergency room nurse to reject the null hypothesis?
To determine whether there is enough evidence to reject the null hypothesis, we need to compare the computed test statistic to the critical value.
In this case, the computed test statistic is 2.50 and the critical value is 2.33. If the computed test statistic falls in the rejection region beyond the critical value, we can reject the null hypothesis. Conversely, if the computed test statistic falls within the non-rejection region, we fail to reject the null hypothesis.In this scenario, since the computed test statistic (2.50) is greater than the critical value (2.33), it falls in the rejection region. This means that the observed data is unlikely to occur if the null hypothesis were true.
Therefore, based on the given information, there is enough evidence for the emergency room nurse to reject the null hypothesis. This suggests that there is sufficient evidence to support the claim that the average number of cases of upper respiratory infections per day at the hospital is over 21 cases.
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There is enough evidence to reject the null hypothesis in this case because the computed test statistic (2.50) is higher than the critical value (2.33). This suggests the average number of daily respiratory infections exceeds 21, providing substantial evidence against the null hypothesis.
Explanation:Yes, there is enough evidence for the emergency room nurse to reject the null hypothesis. The null hypothesis is typically a claim of no difference or no effect. In this case, the null hypothesis would be an average of 21 upper respiratory infections per day. The test statistic computed (2.50) exceeds the critical value (2.33). This suggests that the average daily cases indeed exceed 21, hence providing enough evidence to reject the null hypothesis.
It's crucial to understand that when the test statistic is larger than the critical value, we reject the null hypothesis because the observed sample is inconsistent with the null hypothesis. The statistical test indicated a significant difference, upheld by the test statistic value of 2.50. The significance level (alpha) of 0.05 is a commonly used threshold for significance in scientific studies. In this context, the finding suggests that the increase in respiratory infection cases is statistically significant, and the null hypothesis can be rejected.
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it's in the screenshot
The coordinates of vertex N are the ones in option B
(2a, 0).
What are the coordinates of the last point?On the image we can see an equilateral triangle.
This means that if we draw a vertical line that passes through the top vertex (the one located at (a, c)) that line divides evenly the triangle.
Now, first, notice that point N is on the horizontal axis, then it's y-value must be zero, then we can write:
N(x, 0)
Now, because of the first statement, if x = a reaches the midpoint of the triangle, then the last vertex is at x = 2a
Then the coordinates are:
N(2a, 0)
The correct option is B.
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PLEASE HELP ASAP!!!!!
Answer: It's the first one
Also could you mark my answer as brainliest? It helps and doesnt hurt
Does anyone know this!? If the answer is correct ill mark you as the best answer!
Answer:
H. Decreasing a y-intercept moves the graph down
Which function represents a reflection of f(x) = 2*
Answer:
h(x)=2x-1
Step-by-step explanation:
The Given function is
f(x) =2*(0.35)* x
→y=0.7* x→Pre image
The line passes through first and third quadrant.
it is equation of straight line passing through origin and slope =0.7.
When this line is reflected over y axis , the equation of new line will be
→y= - 0.7 x⇒image
Slope of image will be = -0.7
The Image passes through Second and fourth Quadrant.