We have the decreasing rate expressed as a conversion:
\(\begin{gathered} 1\text{ smoker }\leftrightarrow6.21\text{ days} \\ \\ \Rightarrow\frac{1}{6.21}\text{ smokers }\leftrightarrow1\text{ day} \end{gathered}\)In one year, we have 365 days, so we multiply each side by 365:
\(\begin{gathered} 365\cdot\frac{1}{6.21}\text{ smokers}\leftrightarrow365\cdot1\text{ day} \\ \\ 58.8\text{ smokers}\leftrightarrow1\text{ year} \end{gathered}\)Answer: 58.8 smokers/year
Lincoln's car used 16 gallons to travel 640 miles. How far can he travel on 9 gallons?
Answer: 360
Step-by-step explanation:
Well if you take 640miles and divide it by 16 gallons you get 40mpg so if you get 40mpg times that by 9 and you get 360miles
A) Find an equation for the line perpendicular to the tangent line to the curve y=x^3-4x+6 at the point (2,6)
-The equation is y=
b) What is the smallest slope on the curve? At what point on the curve does the curve have this slope?
-The smallest slope on the curve is
-The curve has the smallest slope at the point
c) Find equations for the tangent lines to the curve at the points where the slope of the curve is 8.
Answer:
f(x) = x³ - 4x + 6
f'(x) = 3x² - 4
a) f'(2) = 3(2²) - 4 = 12 - 4 = 8
6 = 8(2) + b
6 = 16 + b
b = -10
y = 8x - 10
b) 3x² - 4 = 0
3x² = 4, so x = ±2/√3 = ±(2/3)√3
= ±1.1547
f(-(2/3)√3) = 9.0792
f((2/3)√3) = 2.9208
c) 3x² - 4 = 8
3x² = 12
x² = 4, so x = ±2
f(-2) = (-2)³ - 4(-2) + 6 = -8 + 8 + 6 = 6
6 = -2(8) + b
6 = -16 + b
b = 22
y = 8x + 22
f(2) = 6
y = 8x - 10
The equation perpendicular to the tangent is y = -1/8x + 25/4
-The smallest slope on the curve is 2.92
The curve has the smallest slope at the point (1.15, 2.92)
The equations at tangent points are y = 8x + 16 and y = 8x - 16
Finding the equation perpendicular to the tangentFrom the question, we have the following parameters that can be used in our computation:
y = x³ - 4x + 6
Differentiate
So, we have
f'(x) = 3x² - 4
The point is (2, 6)
So, we have
f'(2) = 3(2)² - 4
f'(2) = 8
The slope of the perpendicular line is
Slope = -1/8
So, we have
y = -1/8(x - 2) + 6
y = -1/8x + 25/4
The smallest slope on the curveWe have
f'(x) = 3x² - 4
Set to 0
3x² - 4 = 0
Solve for x
x = √[4/3]
x = 1.15
So, we have
Smallest slope = (√[4/3])³ - 4(√[4/3]) + 6
Smallest slope = 2.92
So, the smallest slope is 2.92 at (1.15, 2.92)
The equation of the tangent lineHere, we set f'(x) to 8
3x² - 4 = 8
Solve for x
x = ±2
Calculate y at x = ±2
y = (-2)³ - 4(-2) + 6 = 6: (-2, 0)
y = (2)³ - 4(2) + 6 = 6: (2, 0)
The equations at these points are
y = 8x + 16
y = 8x - 16
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suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey in order to be 92% confident that the estimated (sample) proportion is within 7 percentage points of the true population proportion of customers who are males?
z0.10 z0.05 z0.04 z0.025 z0.01 z0.005
1.282 1.645 1.751 1.960 2.326 2.576
Use the table of values above.
Answer:
There are 8 percent of customers who are males
Step-by-step explanation:
if 92 percent are females that would mean that the rest of that 8 percent are males
HELPP WHATS THE ANSWERRR
Answer:
C
Step-by-step explanation:
X can’t have 2 y’s
10.) LANDSCAPING: A planter box in the city plaza measures 3 2/3 feet by 4 1/8 feet By
2 1/2 feet. Find the volume of the planter box. (Hint: Length x Width x Height
Volume)
Answer:
Step-by-step explanation: you have to multiply each fraction
Answer:
Ok, if the volume = length x width x height, then why don't you multiply
3 2/3 x 4 1/8 x 2 1/2 and get your answer. Do you want someone else to do that for you? You should know how to do that 5th grade multiplication, so get with it and do it, because I'm not going to do it for you.
Step-by-step explanation:
Is 218 the correct answer, please this is worth a lot
Answer:
you're right it's 218
Step-by-step explanation:
you simply just put 5 instead of n in the equation then calculate. It's simple as that!
I need help solving this
41x-2
99⁰
140⁰
The value of x based on the information about the triangle is 3.
How to calculate the value of xIt should be noted that the total sum of angles in a triangle is 180°. Based on the information given, this will be illustrated as:
180 - (180 - 140) - (180 - 99)
= 180 - 40 - 81
= 59
Therefore, 41x - 2 + 59 = 180
41x = 180 + 2 - 59
41x = 123
Divide
x = 123 / 41.
x = 3.
The value of x is 3.
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You have learned how to divide polynomials in three different ways: by factoring, by long division, and by synthetic division. Explain in words and with mathematical representations how you would divide this polynomial in each of the three ways:
a) Factoring:
b) Long division:
c) Synthetic division:
d) Now, explain a connection you can see for each pair of methods. How does factoring relate to long division? How does long division relate to synthetic division? How does synthetic division relate to factoring?
The way to solve the polynomial using the methods is given below.
How to explain the polynomial?Polynomial by factoring:
An example is (t² + 5t + 4) / +t + 4)
= (t + 1)(t + 4)/(t + 4)
= t + 1.
Dividing polynomial by long division:
Divide the first term of the dividend by the first term of the divisor.
Put this as the first term in the quotient.
Subtract to create a new polynomial.
Continue until you can't divide anymore.
Dividing polynomial by synthesic division:
Step 1: Set up the synthetic division.
Step 2: Bring down the leading coefficient to the bottom row.
Step 3: Multiply c by the value just written on the bottom row.
Step 4: Add the column created in step 3.
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How many solutions does this system have? no solutions one unique solution O O two solutions O or an infinite number of solutions
Answer:
no solutions
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
equation of blue line is y = x + 2 , in slope- intercept form
with slope m = 1
equation of red line is y = x - 3 , in slope- intercept form
with slope m = 1
• Parallel lines have equal slopes
then the blue and red lines are parallel.
the solution to the system is at the point of intersection of the 2 lines
since the lines are parallel then they do not intersect each other.
thus the system shown has no solution.
Help I need this done ASAP
Answer:
im taking s nap
Step-by-step explanation:
AP STATISTICS MATH
(Image above) PLEASE HELP THANK YOU (brainlist answer)
The probabilities are given as follows:
3. P(rides bus|owns a car) = 1/3.
4. P(red|organic) = 3/5.
How to calculate a probability?The probability of an event in an experiment is obtained as the number of desired outcomes of the experiment divided by the number of total outcomes of the experiment.
For item 3, the outcomes are given as follows:
Desired outcomes: rides bus and owns a car -> 8 people.Total outcomes: owns a car -> 24 people.Hence the probability is:
P(rides bus|owns a car) = 8/24 = 1/3.
For item 4, the outcomes are given as follows:
Desired outcomes: red and organic -> 18%Total outcomes: organic -> 30%.The error was in identifying the total outcomes, and the probability is:
P(red|organic) = 18/30 = 3/5.
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You have 2. 5 m of rope and cut 11. 5 inch pieces. How many centimeters of rope will be left over?.
Answer: 16.3 cm
Step-by-step explanation:
2.5 meters = 98.4252 inches.
(Round to 98.4)
98.4 - 11.5 = 86.9
(keep subtracting till you can't subtract 11.5 anymore w/o getting a negative number)
6.4 in = 16.3 cm (multiply the length value by 2.54)
16.3 cm left over.
Write a function rule for
Answer:
x^2
Step-by-step explanation:
1^2=1
2^2=4
3^2=9
For the base b of a logarithmic function, b>0 and b≠1
True
False
The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 16 years; the standard deviation is 1.7 years. Use the empirical rule (68−95−99.7%) to estimate the probability of a gorilla living between 14.3 and 19.4 years.
The probability that a gorilla in this particular zoo will live between 14.3 and 19.4 years is 86% (or 0.86)
Understanding Normal DistributionFrom the Empirical Rule, for a Normal Distribution, approximately:
68% of the data falls within one standard deviation of the mean
95% of the data falls within two standard deviations of the mean
99.7% of the data falls within three standard deviations of the mean
To estimate the probability of a gorilla living between 14.3 and 19.4 years, we first need to standardize these values by subtracting the mean and dividing by the standard deviation:
For 14.3 years: (14.3 - 16) / 1.7 = -1.18
For 19.4 years: (19.4 - 16) / 1.7 = 2
Now we can use a standard normal distribution table to find the probabilities associated with these z-scores:
The probability of a gorilla living less than 14.3 years is approximately the same as the probability of a standard normal variable being less than -1.18, which is about 0.12.
The probability of a gorilla living less than 19.4 years is approximately the same as the probability of a standard normal variable being less than 2, which is about 0.98.
Therefore, the probability of a gorilla living between 14.3 and 19.4 years is approximately the difference between these two probabilities: 0.98 - 0.12 = 0.86.
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need help asap!!!!!!!
Answer:
-1
Step-by-step explanation:
Answer: -1
Step-by-step explanation:
Which fractions are equal to 0.6
1 over 6,60 over 100,1 over 60,6 over 10
Solve the system by using elementary row operations on the equations. Follow the systematic elimination procedure. 3X1 + 6x2 = 18 4x1 +5X2 = 30 Find the solution to the system of equations.
Solution to the system by using elementary row operations of equations is \(x1 = 3\) and \(x2 = 1\).
This can be understand by:
Step 1: Subtract 3 times the first equation from the second equation:
\(4x1 + 5x2 = 30\\-3(3x1 + 6x2) = 18\\ -x1 + -x2 = -12\)
Step 2: Add the equations to eliminate x2:
\(3x1 + 6x2 = 18\\-x1 + -x2 = -12\\2x1 = 6\)
Step 3: Divide both sides by 2 to solve for x1:
\(2x1 = 6\\x1=6/2\\x1 = 3\)
Step 4: Substitute x1 = 3 into either equation to solve for x2:
\(3(3) + 6x2 = 18\\6x2 = 6\\x2 = 1\)
Therefore, the solution to the system of equations is x1 = 3 and x2 = 1.
To reduce a matrix into row-echelon form, a series of procedures known as elementary row operations is used. These operations include multiplying one row by a nonzero value and adding it to another row, adding two rows together, switching two rows, and adding two rows together. They can be used to determine a matrix's inverse and to resolve linear equations.
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When constructing a confidence interval for a population mean μ from a sample of size 1515, the number of degrees of freedom for the critical value tα/2 is _____.
When constructing a confidence interval for a population mean μ from a sample of size n, the number of degrees of freedom (df) for the critical value tα/2 is (n-1).
Therefore, in this case, with a sample size of 1515, the number of degrees of freedom for the critical value tα/2 is:
df = 1515 - 1 = 1514
So, the answer is 1514.
Confidence intervals are a common statistical tool used to estimate population parameters based on a sample from that population. They are used to quantify the level of uncertainty associated with an estimate and provide a range of values within which the true population parameter is expected to fall with a certain level of confidence. The confidence level is typically set to 95% or 99%, and the interval is calculated using the standard error of the sample mean and a critical value from the t-distribution with degrees of freedom equal to the sample size minus one. Confidence intervals are widely used in many fields, including business, science, and social sciences.
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Five hundred consumers were surveyed about a new brand of snack food, Crunchicles. Their age groups and preferences are given in the table.
18–24 25–34 35–55 55 and over Total
Liked Crunchicles 39 66 10 86 201
Disliked Crunchicles 27 19 38 95 179
No Preference 24 37 35 24 120
Total 90 122 83 205 500
One consumer from the survey is selected at random. Use reduced fractions for your responses to each of the following questions.
What is the probability that the consumer is 18–24 years of age, given that they dislike Crunchicles?
Answer:
The probability that the consumer is 18 - 24 years of age, given that they dislike Crunchicles is 0.151.
Step-by-step explanation:
The age groups and preferences are given as follows:
18 - 24 25 - 34 35 - 55 55 and over Total
Liked Crunchicles 39 66 10 86 201
Disliked Crunchicles 27 19 38 95 179
No Preference 24 37 35 24 120
Total 90 122 83 205 500
One consumer from the survey is selected at random.
Compute the probability that the consumer is 18 - 24 years of age, given that they dislike Crunchicles as follows:
\(P(18-24|DC)=\frac{P(18-24\cap DC)}{P(DC)}\)
\(=\frac{n(18-24\cap DC)}{n(DC)}\\\\=\frac{27}{179}\\\\=0.15084\\\\\approx 0.151\)
Thus, the probability that the consumer is 18 - 24 years of age, given that they dislike Crunchicles is 0.151.
Express 400cm as a decimal of 4km
400cm = 0.004km.
Perhaps there is something else your question meant, but it is way to unspecific.
Isabella tossed a coin and spun a spinner that is divided into 3 equal sections. She did this 50 times. The results are shown in the table. What is the experimental probability that the next time Isabella tosses the coin and spins the spinner she will get a tails and a 2? *
Answer:
ur gay landen
Step-by-step explanation:
A salesperson sells $2200 in merchandise and earns a commission of $286.
Find the commission rate. Write your answer as a percentage.
Answer:
13%
Step-by-step explanation:
Commission rate = commission / value sold
= 286/2200
= 13%
The answer is 13% and here is how you get it-
First of all the commission rate= commission/value sold.
So you need to divide 286 by 2200. Your answer to that would be 0.13 and just convert that into a percentage. That would give you 13%.
what is the value of the 2 in 3,261? the 3? the 1?
Answer:
The 2 is 200
The 3 is 3000
The 1 is 1
And if needed
The 6 is 60
Step-by-step explanation:
2 is in hundredths place
3 is in thousand place
6 is in tens place
1 is in ones place
hope this helps
Aiden runs a farm stand that sells apples and strawberries. Each pound of apples sells
for $2 and each pound of strawberries sells for $3. Aiden made $80 from selling a
total of 35 pounds of apples and strawberries. Write a system of equations that could
be used to determine the number of pounds of apples sold and the number of pounds
of strawberries sold. Define the variables that you use to write the system.
Answer:
Step-by-step explanation:
Write 4.63 x 10^-3 in standard notation
Hello!
4.63 x 10^-3 = 0,00463
Find the value of x in the triangle shown below.
8
3
Answer:
\( \sqrt{55}\)
Step-by-step explanation:
Given is a right angled triangle.
Therefore, by Pythagoras theorem:
\( {x}^{2} = {8}^{2} - {3}^{2} \\ = 64 - 9 \\ = 55 \\ x = \sqrt{55} \)
Its okay if you explain but PLEASE specify A, B, C or D!
Please and thank you!
The correct statements regarding the dilation to the triangle are given as follows:
Triangle X'Y'Z' is similar to triangle XYZ.The perimeter of X'Y'Z' is 2/3 the perimeter of XYZ.What is a dilation?A dilation can be defined as a transformation that multiplies the distance between every point in an object and a fixed point, called the center of dilation, by a constant factor called the scale factor.
The resulting image is a larger or smaller version of the original object, depending on whether the scale factor is greater than or less than 1, respectively.
The ratio of the perimeter is equals to the scale factor, while the ratio of the areas is equals to the square of the scale factor.
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At Zeke's family reunion, Zeke hands out watermelon for the annual seed-spitting contest. He gives a watermelon slice to each kid at the reunion. He also gives a slice to 30 adults. Zeke hands out 75 watermelon slices in all.
1. The equation to find the number of kids k at Zeke's family reunion is c) k + 30 = 75.
2. The solution to the equation shows that kids (k) at Zeke's family reunion are 45.
What is an equation?An equation states that two or more mathematical expressions are equal using the equation symbol (=).
Equations involve the combination of some variables, numbers, values, and constants using mathematical operands (+, -, x, or ÷).
The total number of watermelon slices distributed by Zeke at the family reunion = 75 slices.
The number of slices of watermelon given to adults at the family reunion = 30 slices.
The number of slices of watermelon given to kids at the family reunion = 45 (75 - 30) slices.
Equation:k + 30 = 75
k = 75 - 30
k = 45
Equations A, B, and D cannot be used to find how many kids k at the reunion.
Thus, equation C shows the number of kids at the family reunion as 45.
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Question Completion:1. Which equation can you use to find how many kids k are at the reunion?
a) k - 30 = 75
b) k - 25 = 75
c) k + 30 = 75
d) 30k = 75
2. Solve this equation for k to find how many kids are at the reunion.
VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.
Answer:
D) R’(2,3); S’(7,3); T’(5,8); U’(0,8)
Step-by-step explanation:
The last one. If you reflect it over the x-axis, it moves from quadrant IV to quadrant I. Everything in quadrant I is positive, and the last one is the only one that has all x and y values positive.