A school wants to put a bond in the next election, they call this bond Measure K.
They select a random sample of voters in the county and find a 90% confidence interval for the proportion of voters in this county who would vote yes.
Recall that a hypothesis test is used when we want to test an assertion or a claim.
For the given case, there is no assertion or any claim so this is definitely not a hypothesis test.
This is in fact a confidence interval since we are interested in the proportion of voters in this county who would vote yes.
The confidence interval would give us a fair estimate of the true population proportion of voters in this county who would vote yes.
Now coming to whether is it a 1 proportion or 2 proportion confidence interval.
Notice that there is only 1 proportion for the given case that is the proportion of voters in this county who would vote yes.
Therefore, the need to use "1 proportion (z) confidence interval"
in point slope form: passes through (1, -3), slope = -1?
Explanation
Step 1
Let
P1(1,-3)
slope=-1
Step 2
use the formula
[tex]y-y_1=m(x-x_1)[/tex]replacing
[tex]\begin{gathered} y-y_1=m(x-x_1) \\ y-(-3)=-1(x-1) \\ y+3=-x+1 \\ \text{subtract 3 in both sides} \\ y+3-3=-x+1-3 \\ y=-x-2 \end{gathered}[/tex]I hope this helps you
• Which ratios have a unit rate of 37 Choose ALL that apply. 15 1 1 1 cup : cup cups: 25 cups 3 ) 3 3- cups : 2 cups 4 2 2 () 2 cups : cup 3 21 / 1 5 cups : cup 6 cup : 1 cup 3
Explanation:
The ratios are like fractions, they can be simplified. And since fractions are divisions in some occasions we can do the division in order to get a simpler number:
• 1 cup: 1/4 cup _ we can do the division with the KCF method: keep the first fraction, change division sign into multiplication sign and flip the second fraction:
[tex]1\colon\frac{1}{4}=1\times4=4[/tex]• 2 cups : 2/3 cup
[tex]2\colon\frac{2}{3}=2\times\frac{3}{2}=3_{}[/tex]• 15/2 cups : 2 1/2 cups
[tex]\frac{15}{2}\colon2\frac{1}{2}=\frac{15}{2}\colon\frac{5}{2}=\frac{15}{2}\times\frac{2}{5}=3[/tex]• 2 1/2 cups : 5/6 cup
[tex]2\frac{1}{2}\colon\frac{5}{6}=\frac{5}{2}\colon\frac{5}{6}=\frac{5}{2}\times\frac{6}{5}=\frac{6}{2}=3[/tex]• 3 3/4 cups : 2 cups
[tex]3\frac{3}{4}\colon2=\frac{15}{4}\colon2=\frac{15}{4}\times\frac{1}{2}=\frac{15}{8}[/tex]• 2/3 cup : 1 cup
[tex]\frac{2}{3}\colon1=\frac{2}{3}\times1=\frac{2}{3}[/tex]Answers:
The answers are the ones in a red rectangle:
Hello, Im trying to help my 9th grade daughter who is autistic with her test corrections. Its been over 20 years since I last took Algebra 1 and Im a bit rusty. She gets agitated easily and so Im trying to do some of the prep work now so I can help her when she gets home. I appreciate your assistance in advance
The original graph is given below
a. If the starting number of players is 600 instead of 400 then
The y-intercept will be 600
The new graph will be a vertical stretch of the original graph by a scale factor of 600/400
[tex]\frac{600}{400}=1.5[/tex]Therefore,
The y-intercept will be 600. The new graph will be a vertical stretch of the original graph by a scale factor of 1.5
b. If the starting number of players is 800 instead of 400 then
The y-intercept will be 800
The new graph will be a vertical stretch of the original graph by a scale factor of 800/400
[tex]\frac{800}{400}=2[/tex]Therefore,
The y-intercept will be 800. The new graph will be a vertical stretch of the original graph by a scale factor of 2
A company discovers that to produce x=700 new electronic parts, it will cost y=$61100. To produce 620 new electronic parts, it will cost $54460
Answer:
The cost increases at a rate of $83 per item.
Step-by-step explanation:
Given two points, use the following to determine the equation:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Given the points (700,61100) and (620, 54460), substitute and compute for the slope:
[tex]\begin{gathered} m=\frac{61100-54460}{700-620} \\ m=\frac{}{}83 \end{gathered}[/tex]The cost increases at a rate of $83 per item.
ten years ago a man's age was 6 times the age of his son 12 years later the age of the Son will be 27 years what is the present age of his father
From this problem let's begin with some notation: Let the man age denoted by M. With the info provided we can do this:
Son age = 27-12= 15
Finally with the condition given we can createthe following equation:
[tex]M-10=6(15-10)[/tex]And solving for M we got:
[tex]M=6\cdot(5)+10=40[/tex]So then basically the answer for the men age is 40 years
Sam gave the mother the child a bottle medication and told her a day . the following conversion laclors : 1 - 30 . 1lb(s) = 15mLHow many tablespoon is one dose?How many mL will the child take in one day?How many fl oz is this?How many days will the bottle and medication last?
Given:
The doctor gave the mother of the sick baby 16 fl oz bottle of liquid medicine.
Dosage instructed to give the baby = 30 ml twice a day
a) How many tablespoon is one dose?
Using standard measurements, 1 tablespoon = 15 ml
Since 1 dose is 30 ml, the dose in tablespoon is:
[tex]\frac{30\text{ ml}}{15\text{ ml}}=\text{ 2 tablespoons}[/tex]1 dose is 2 tablespoons
b) Since, 30 ml is to be given 2 times daily, the ml the child will take a day is:
[tex]30\text{ mL }\ast\text{ 2 = 60 mL}[/tex]The child will take 60 mL a day
c) fl oz means fluid ounce
Also 1 fluid ounce is equivalent to 28.41 ml
Given:
28.41ml = 1 fl oz
60 ml =
[tex]\frac{60}{28.41}=2.11\text{ fl oz}[/tex]Therefore, 60 ml = 2.11 fl oz
d) How many days will the bottle and medication last?
To find the number of days the medication will last, we have:
[tex]\frac{16\text{ fl oz}}{2.11\text{ fl oz}}=\text{ 7.6}[/tex]Therefore, the bottle will last for approximately 8 days.
ANSWER:
a) 2 tbs
b) 60 ml
c) 2.11 fl oz
d) Approximately 8 days
How to Graph 2x-3y=6 in a coordinate plane.
Explanation:
To graph the equation 2x - 3y = 6, we need to find two points in the line.
So, first let's make y = 0 and solve for x
2x - 3y = 6
2x - 3(0) = 6
2x = 6
2x/2 = 6/2
x = 3
Then, if x = 0, we get:
2x - 3y = 6
2(0) - 3y = 6
-3y = 6
-3y/(-3) = 6/(-3)
y = -2
Therefore, the points that we will use to graph the equation are (3, 0) and (0, -2).
Answer:
So, the graph of 2x - 3y = 6 is
what is the value of x in this equation ?
Solution
We have the following equation given:
4(2x+1)= 27 + 3(2x-5)
And we can solve for x on this case:
8x +4 = 27 + 6x -15
8x -6x = 27-15 -4
2x = 8
x= 8/2= 4
Solve for the values of x and y for the regular hexagon.a. x = 120, y = 60b. x = 110, y = 70c. x = 105, y = 75d. x = 60, y = 120e. X = 115, y = 65
Remember that the sum of the interior angles of an hexagon is equal to 720°
Because this is a regular hexagon,
[tex]\begin{gathered} 6x=720\rightarrow x=\frac{720}{6} \\ \rightarrow x=120 \end{gathered}[/tex]Notice angles x and y lay in the same straight line.
Thereby,
[tex]\begin{gathered} x+y=180 \\ \rightarrow120+y=180 \\ \rightarrow y=180-120 \\ y=60 \end{gathered}[/tex]Therefore,
[tex]\begin{gathered} x=120 \\ y=60 \end{gathered}[/tex](The correct answer is option A)
Hayden has read 3/5 of a book she has read 75 pages so far how many pages are in the whole book?
Let there are x number of pages in whole book. So 3/5 of a book is equal to 3/5x.
Determine the value of x.
[tex]\begin{gathered} \frac{3}{5}x=75 \\ x=75\cdot\frac{5}{3} \\ =125 \end{gathered}[/tex]So there are 125 pages in the whole book.
a cone has a height of 8 cm and a slant height of 10cm. Calculate the radius of the cone.
HALP PLEASE
The radius of the cone is= 3.14*160 cm^2.
What is equations?There are many different ways to define an equation.The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. Mathematical algebraic equations typically have one or more variables.A linear equation may have more than one variable. A linear equation is an equation in which the highest power of the variable is always 1.This is a second-order equation. In quadratic equations, at least one of the variables should be raised to exponent 2.According to our question-
Total SA of a cone = πr^2+πrl = πr(r+l)
Here r = 8 cm , slant height l=12 cm.
SA of cone =3.14 * 8 * ( 8+12) cm^2
=> 3.14*160 cm^2
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Evaluate the integral of the product if x and quantity x squared plus 1 and x, dx.
The integral is given
[tex]\int x(x^2+1)dx[/tex]ExplanationTo determine the solution to the integral.
[tex]\int x(x^2+1)dx=\int x^3+x\text{ dx}[/tex][tex]\int(x^3+x)dx=\frac{x^4}{4}+\frac{x^2}{2}+C[/tex]AnswerHence the correct option is C.
[tex]\frac{x^4}{4}+\frac{x^2}{2}+C[/tex]in rectangle QRST , QS = 3x+7 and RT = 5X-3.find the lengths of the diagonals of QRSTeach diagonal has a length of ....... units.
Consider the rectangle drawn below,
Consider the properties of rectangle that the opposite sides are equal, and both the diagonals are also equal in length.
[tex]QS=RT\Rightarrow3x+7=5x-3\Rightarrow5x-3x=7+3\Rightarrow2x=10\Rightarrow x=5[/tex]Thus, the value of 'x' is 5.
Substitute the value to obtain the diagonal QS as,
[tex]QS=3(5)+7=15+7=22[/tex]Similarly solve for the diagonal RT as,
[tex]RT=5(5)-3=25-3=22[/tex]Already we knew that the diagonal will be equal with the length 22 units.
3.2 radians=________degrees
SOLUTION
To convert from radians to degrees, we have the conversion rate
[tex]\begin{gathered} \pi radians=180^0 \\ 2\pi radians=360^0=180\times2 \end{gathered}[/tex]Then 3.2 radians will be
[tex]3.2\pi radians=180\times3.2=576^0[/tex]Therefore 3.2 radians =576°
all you need is in the photo please answer fast only give the answer don't put step by step pleaseeeeeeeeeeeeeeeeeeeeee
The value of x1 = 7 and x2 = -2
From the question, we have
a=1
b=-5
c=-14
x= [-b ± √(b2 – 4ac)]/2a
substituting the value, we get
x= [5 ± √(-5² – 4*1*-14)]/2*1
=[5 ± √(25+56)]/2
=[5 ± √81]/2
=[5 ± 9]/2
x1 =[5 +9]/2=7
x2 =[5 -9]/2=-2
Quadratic Equation:
The polynomial equations of degree two in one variable of type f(x) = ax^2 + bx + c = 0 and with a, b, c, and R R and a 0 are known as quadratic equations. It is a quadratic equation in its general form, where "a" stands for the leading coefficient and "c" for the absolute term of f. (x).It is a given that the quadratic equation has two roots. Roots might have either a true or made-up nature.
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Can you find the correct answers to all parts of question 1 and 2. Could you also tell me why I got my answers wrong originally?
1.
Part a) G(x) is still a function because it's the inverse function of f(x).
part b)
f(g(4)).
FIrst step for this is to find g(4) which is:
[tex]\begin{gathered} g(4)=f^{\text{ -1}}(4) \\ \\ g(4)=f^{\text{ -1}}(4)=g(4)=3 \end{gathered}[/tex]Part c)
Now, to find the equation of the tangent line we have to find the slope, which is the derivative, because the derivative is the slope of the tangent line at a given x-value
But they ask for the g function, in this case:
[tex]\begin{gathered} f^{\text{ -1}}(\text{ -2\rparen} \\ then,\text{ g\lparen-2\rparen=7} \end{gathered}[/tex]So, the derivative in f(x)= 7 is -4.5
So, the equation is:
[tex]\begin{gathered} y\text{ - g\lparen-2\rparen=m\lparen x - \lparen-2\rparen} \\ y\text{ - 7= -4.5\lparen x+2\rparen} \\ \\ y\text{ - }7=\text{ -}4.5(x+2) \end{gathered}[/tex]The cost in dollars of making x items is given by the function C(x)=10x+700.The fixed cost is determined when zero items are produced. Find the fixed cost for this item.fixed cost=What is the cost of making 25 items?C(25)=Suppose the maximum cost allowed is $2700. What are the domain and range of the cost function, C(x)?When you enter a number in your answer, do not enter any commas in that number. In other words if you want to enter one thousand, then type in 1000 and not 1,000. It's not possible to understand what the interval (1,000,2,000) means, so you should write that as (1000,2000).domain=range=
According to the situation, the domain of this function will contain all values that x can take. Since x is the number of items, it only can take values from 0 to a certain value.
To find this certain value, use the maximum cost allowed (2700) as C(x) and find x using the equation:
[tex]\begin{gathered} C(x)=10x+700 \\ 2700=10x+700 \\ 2700-700=10x \\ 2000=10x \\ x=\frac{2000}{10} \\ x=200 \end{gathered}[/tex]It means that the domain of the function is [0,200]
The range contains all the values that cost can take. We know that the fixed cost (which is the minimum cost) is 700 and the maximum cost is 2700.
It means that the range of the function is [700,2700]
Answer:
it is not clear
Step-by-step explanation:
Option for the first box: 25, 54, 50, 4Options for the second box:0.5, 2, -0.5, 1Options for the third box:0, 1, 0.5, -0.5 Options for the fourth box:4, 25, 29, 54
Answer:
First box: 25
Second box: 1
Third box: -0.5
Fourth box: 29
First, we will find the amplitude of the sine function.
Thor was selling candy at a softball game and recorded the number of candy he sold each day in the line graph above. Which histogram below represents the data shown in the line graph?.
Day 1 = 70, Day 2 = 74, Day 3 = 78, Day 4 = 80
Which pairs of figures are congruent? Which pairs are similar?The first question.
Given the two circles shown in the exercise, you need to remember that, by definition, two figures are congruent when they have the same size and they have the same shape.
In this case, you can identify that the circles have the same diameters (remember that a diameter of a circle is the length that passes through the center of the circle and touch two points on the circumference):
[tex]\begin{gathered} d_1=2units \\ d_2=2units \end{gathered}[/tex]Therefore, these circles have the same shape and size.
By definition, two figures are similar when their corresponding angles are congruent and the ratios of the corresponding sides are proportional.
In this case, since the figures are circles, you know that they both measure 360 degrees. Knowing that they also have the same diameter, you can determine that they are similar too.
Hence, the answer is: They congruent and similar.
The graph shows a relationship between temperature and time.504030Temperature (°F)2010h246810Number of HoursWhich best represents the equation that shows the temperature, t, after h hours?tu-n +45t = -45ht = -5h + 45t= -3h + 45
as we can see in the graph we know that the equation that represents a line is the equation of the line
in this case
y=t
x=h
we need two points in order to calculate the slope
(0,45)=(x1,y1)
(5,30)=(x2,y2)
[tex]m=\frac{y2-y1}{x2-x1}=\frac{30-45}{5-0}=\frac{-15}{5}=-3[/tex]the y-intercept is 45
the form of the equation of the line is
[tex]y=mx+b[/tex]where
m=slope
b=y-intercept
in this case
m=-3
b=45
[tex]y=-3x+45[/tex]using the variables of the problem the equation that represents the problem is
[tex]t=-3h+45[/tex]the correct answer is the last one
The measurement of three angles of a triangle are (2x)degrees ,(3x)degrees and (x+30) degrees. What is the value of x?
We have that the measurement of three angles of a triangle is:
1. Angle 1: 2x degrees.
2. Angle 2: 3x degrees.
3. Angle 3: (x+30) degrees.
We know that the sum of the internal angles of a triangle is equal to 180.
Therefore, to find the value of x, we can proceed as follows:
[tex]\begin{gathered} m\angle1+m\angle2+m\angle3=180^{\circ} \\ \\ 2x+3x+(x+30)=180^{\circ} \end{gathered}[/tex]Now, we can add the like terms as follows:
[tex]\begin{gathered} 2x+3x+x+30^{\circ}=180^{\circ} \\ \\ 5x+x+30^{\circ}=180^{\circ} \\ \\ 6x+30^^{\circ}=180^{\circ} \end{gathered}[/tex]We can subtract 30 degrees to both sides of the equation, and then we have to divide both sides by 6:
[tex]\begin{gathered} 6x+30^{\circ}-30^{\circ}=180^{\circ}-30^{\circ} \\ \\ 6x=150^^{\circ} \\ \\ \frac{6x}{6}=\frac{150}{6} \\ \\ x=25 \end{gathered}[/tex]Therefore, in summary, the value for x is equal to 25.
7. How many prime factors does the number 124 have?
It a popular math theorem, that any natural number can be factored out into prime numbers. For example the number 24 is factored as 2³*3, so its prime factors are 2 and 3.
In this case, we want to factor 124. We start by noticing that 124 is an even number, therefore, the first prime factor we try is 2. Next, we divide 124 by 2. We get
[tex]\frac{124}{2}=62[/tex]which is again an even number. This means that we can again divide by 2. We do so
[tex]\frac{62}{2}=31[/tex]Note that 31 is a prime number. So we can't continue dividing. Then
[tex]124=2\cdot2\cdot31=2^2\cdot31[/tex]So it has 2 different prime factors
Jamal's deck is in the shape of a polygon and is shown on the grid below.(-8,6)(6,6)o[(-8, -4),(6,-4)What is the area of Jamal's deck?square units
Let;
A(-8,6) B(6,6) C(6, -4) D(-8, -4)
Let's find the length AB
x₁= -8 y₁=6 x₂=6 y₂=6
We will use the distance formula;
[tex]d=\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}[/tex][tex]=\sqrt[]{(6+8)^2+(6-6)^2}[/tex][tex]=\sqrt[]{14^2+0}[/tex][tex]=14[/tex]Next, we will find the width BC
B(6,6) C(6, -4)
x₁= 6 y₁=6 x₂=6 y₂=-4
substitute into the distance formula;
[tex]d=\sqrt[]{(6-6)^2+(-4-6)^2}[/tex][tex]=\sqrt[]{(-10)^2}[/tex][tex]=\sqrt[]{100}[/tex][tex]=10[/tex]Area = l x w
= 14 x 10
= 140 square units
a hotel claims that 95% of its customers are very satisfied with its service. there is a sample size of seven customers. A. what is the probability that exactly six customers are very satisfied?B what is the probability that more than six customers are very satisfied?C. what is the probability that less than five customers are very satisfied?D. suppose that of seven customer selected, three responded that they are very satisfied. what conclusions can be drawn about the sample? the probability that three out of seven customers are very satisfied is__, assuming that 95% of customers are very satisfied. therefore, it is__that randomly selecting seven customers would result in three responding that they were very satisfied.(round all answers to four decimal places please)
Let X be the number of customers satisfied
Given:
Sample size (n) = 7
The probability that a customer is very satisfied = 0.95
The probability distribution function for a binomial distribution is:
[tex]P(X=x)=(^n_x)p^x(1-p)^{n-x}_{}[/tex](a) Probability that exactly 6 customers are satisfied
[tex]\begin{gathered} P(X=6)=(^7_6)(0.95)^6(1-0.95)^{7-6} \\ =\text{ 7}\times\text{ 0.7351}\times0.05 \\ =\text{ 0.25728} \\ \approx\text{ 0.2573} \end{gathered}[/tex]The probability that exactly six customers are very satisfied is 0.2
(b) Probability that more than 6 customers are very satisfied
Which equation shows that the Pythagorean identity is true for 0=3pi/2
Answer:
Given that,
To find the equation which shows Pythagoras identity is true for theta=3 pi/2
The equation is of the form,
[tex]\sin ^2(\frac{3\pi}{2})+\cos ^2(\frac{3\pi}{2})=1[/tex]we have that,
[tex]\frac{3\pi}{2}=\pi+\frac{\pi}{2}[/tex]Using this we get,
[tex]\begin{gathered} \sin \frac{3\pi}{2}=\sin (\pi+\frac{\pi}{2}) \\ =-\sin (\frac{\pi}{2}) \\ \sin \frac{3\pi}{2}=-1----\mleft(1\mright) \end{gathered}[/tex][tex]\cos \frac{3\pi}{2}=\cos (\pi+\frac{\pi}{2})=0-----(2)[/tex]Substitute the values in the given equation we get,
[tex](-1)^2+0^2=1[/tex]Answer is: Option B:
[tex](-1)^2+0^2=1[/tex]A new auditorium is being built for a college. The balcony has 60 seats. Thefloor has 15 rows with x seats in each row. The number of people in theauditorium must be under 315 to meet safety regulations.What is the solution of this inequality, and what is its meaning?
x < 17
This means the new auditorium must have less than 17 seats 1n each row on the floor to meet the safety regulations.
Explanation:Number seats in the balcony = 60
Number of seats on the floor = number of rows × number of seats on each row
Number of seats on the floor = 15× x = 15x
The number of people in the auditorium must be under 315:
This means the number of people can be less than 315 but not above it.
We represent less than 315 as < 315
The inequality equation:
Number seats in the balcony + Number of seats on the floor < 315
60 + 15x < 315
Rewritting the inequality equation:
15x + 60 < 315
Solving the inequality:
15x + 60 < 315
collect like terms by subtracting 60 from both sides:
15x + 60 - 60 < 315 -60
15x < 255
Divide both sides by 15:
15x/15 < 255/15
x < 17
This means the new auditorium must have less than 17 seats in each row on the floor to meet the safety regulations.
Translate the sentence into an equation.Seven less than the product of 6 and a number is 2.Use the variable x for the unknown number
Seven less than the product of 6 and a number is 2.
→ The product of 6 and a number can be expressed as 6x
→ "Seven less than the product of 6 and a number", indicates that you have to subtract 7 to 6x, so that: 6x-7
→ According to the sentence, the result of this calculation is seven, so the complete expression is:
[tex]6x-7=2[/tex](06.02)
Solve the system 2x + 2y = -6 and 3x - 2y = 11 by using graph paper or graphing
technology. What is the solution to the system?
O (1,-4)
O (-1,-7)
O (3,-2)
O (2,-1)
Answer:
(1-4)
Step-by-step explanation:
Solve for the first variable(x or y) in one of the equations(you choose which equation) and then after finding the first variable(x or y) you plug it in into the equation u didnt use and solve
Set up a proportion for each word problem and solve the problem
Explanation
We are given that Meagan earned $550 at her job in 4 weeks.
We are required to find how many weeks it would take her to make $5000.
First, we need to find the rate at which she works per week as follows:
[tex]\begin{gathered} Since\text{ }4\text{ weeks = \$550} \\ 1\text{ }week=\frac{550}{4} \end{gathered}[/tex]To determine how many weeks it would take her to earn $5000, we need to divide the amount earned after x weeks by the rate as follows:
[tex]\begin{gathered} 1\text{ }week=\frac{550}{4} \\ x\text{ }weeks=5000\div\frac{550}{4}=5000\times\frac{4}{550} \\ =36.36363636\text{ weeks} \end{gathered}[/tex]Hence, the answer is 36.36363636 weeks.