Answer:
a. 0.443
b. 0.023
Step-by-step explanation:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean \(\mu\) and standard deviation \(\sigma\), the zscore of a measure X is given by:
\(Z = \frac{X - \mu}{\sigma}\)
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
The weight of turkeys is normally distributed with a mean of 22 pounds and a standard deviation of 5 pounds.
This means that \(\mu = 22, \sigma = 5\)
a. Find the probability that a randomly selected turkey weighs between 20 and 26 pounds.
This is the pvalue of Z when X = 26 subtracted by the pvalue of Z when X = 20. So
X = 26
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{26 - 22}{5}\)
\(Z = 0.8\)
\(Z = 0.8\) has a pvalue of 0.788
X = 20
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{20 - 22}{5}\)
\(Z = -0.4\)
\(Z = -0.4\) has a pvalue of 0.345
0.788 - 0.345 = 0.443
The answer is 0.443
b. Find the probability that a randomly selected turkey weighs below 12 pounds.
This is the pvalue of Z when X = 12. So
\(Z = \frac{X - \mu}{\sigma}\)
\(Z = \frac{12 - 22}{5}\)
\(Z = -2\)
\(Z = -2\) has a pvalue of 0.023
The answer is 0.023.
What is the volume of the pyramid? Show all work.
6 m
8 m
4 m
Shen bought a desk on sale for $218.40. This price was 72% less than the original price. What was the original price?
Answer:
780
Step-by-step explanation:
In this example we will call Original Price = y
72%=0.72
218.40=0.72*y
1-0.72=0.28
218.4÷0.28=780
B is between A and C. AB = 4x - 1, BC = 2x -1, and AC = 5x. Find X.
\(\\ \ast\sf\hookrightarrow AB+BC=AC\)
\(\\ \ast\sf\hookrightarrow 4x-1+2x-1=5x\)
\(\\ \ast\sf\hookrightarrow 6x-2=5x\)
\(\\ \ast\sf\hookrightarrow 6x-5x=2\)
\(\\ \ast\sf\hookrightarrow x=2\)
please help me ! scammers will be reported !
Answer:
50% I think
Step-by-step explanation:
A car uses 9.8 gallons of gas to travel 245 miles. How many miles are traveled per gallons of gas used.
Answer:
The car travels 25 miles per gallon of gas used
Step-by-step explanation:
Unit Rate
It's given a car uses 9.8 gallons of gas to travel 245 miles.
We have to calculate how many miles the car travels per gallon. The unit rate gives us that result by dividing the number of miles by the gallons used:
unit rate = 245 miles / 9.8 gallons = 25
The car travels 25 miles per gallon of gas used
Answer:
i think its A
Step-by-step explanation:
someone please help me answer this
Answer:
32 kilometers
Step-by-step explanation:
65 - 33 = 32 kilometers
Hope this helps
Answer:
b = 56km is the answer.
Step-by-step explanation:
a (Northbound train) = 33km
b (Eastbound train) = ?
c (Distance between them) = 65km
According to the Pythagorean theorem,
a² + b² = c²
33² + b² = 65²
1089 + b² = 4225
b² = 4225 - 1089
b² = 3136
b = 56km
∴ the eastbound train has travelled 56km.
Part A
ANALYZE Reece says that if you solve a system of equations using elimination by addition and the result is 0=2, then the solution of the system is (0,2). Select a counterexample to show that her statement is false.
A)
x+y = 1
-x-y = -1
B)
x+y=1
x-y=1
C)
x+y=1
-x-y=1
D)
x+y=-1
-x-y=-1
Part B
Justify your argument.
This system of equations has Select Choice
The counter example for the system of equation is given by x + y = 1 ,
-x - y = 1 has the result 0 = 2 but ( 0, 2 ) is not the solution of the equation. It proves statement is false.
As given in the question,
Form the given system of equations , using elimination method to get the solution of the equation which shows the result 0 = 2 is as follow:
a. x + y = 1
- x - y = -1
0 = 0
Not the required result.
b. x + y = 1
x - y = 1
2x = 2
Not a required result.
c. x + y = 1
- x - y = 1
0 = 2
Required result.
Analyze : substitute x = 0 and y = 2 in any one equation
0 + 2 = 1
or -0 -2 = 1
Both the equations proves that statement is false.
d. x + y = -1
-x -y = -1
0 = -2
Not a required result.
Therefore, the system of equation of option c. x + y = 1 , -x - y = 1 has the result 0 = 2 and proves it is the false statement.
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fred explained to his friend nicole 5x8/6 is the step it takes to multiply 5/8 x 6 a fraction by a whole number. is fred correct?
explain your reasoning.
Answer:
no fred is not correct
Step-by-step explanation:
so u say
5/8×6/1
then u say 5×6=30
then u say 8×1=8
then u say 30÷8= 3.75
so yr answer is =3.75
hope u understand
find the first derivative with respect to x of the following function: f(x)=(7x+3)(4-3x)
Answer:
19 - 42x
Step-by-step explanation:
To differentiate this, we must use the product rule
f'(x) = (7x+3)'(4-3x) + (4-3x)'(7x+3)
= (7)(4-3x) + (-3)(7x+3)
= 28 - 21x - 21x - 9
= 19 - 42x
6x + 45 is less than or equal to 240
Answer: neither
Step-by-step explanation:
To get rid of the fractions, we pick a useful number and multiply both sides of the equation by that number. The number is useful if multiplying eliminates all fractions.
Help me with this question…….
The volume of the cylinder is
D. 666 cubic centimetersHow to find the volume of the cylinderUsing the volume of cone given by the formula
= π r² h/3
In the problem the volume is given by 222 and volume of cylinder is equal to
= π r² h
comparing the two volumes and taking proportions
volume of cone / volume of cylinder
π r² h/3 / π r² h = 222 / volume of cylinder
π r² h / 3 π r² h = 222 / volume of cylinder
1 / 3 = 222 / volume of cylinder
volume of cylinder = 3 * 222
volume of cylinder = 666
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. You have a credit card with a balance of $754.43 at a 13.6% APR. You have $300.00 available each month to save or pay down your debts. a. How many months will it take to pay off the credit card if you only put half of the available money toward the credit card each month and make the payments at the beginning of the month? b. How many months will it take to pay off the credit card if you put all of the available money toward the credit card each month and make the payments at the beginning of the month? Be sure to include in your response: • the answer to the original question • the mathematical steps for solving the problem demonstrating mathematical reasoning
a. It will take 7 months to pay off the credit card.
b. it will take 4 months to pay off the credit card.
Since, APR stands for Annual Percentage Rate. It is the interest rate charged on a loan or credit card, expressed as a yearly percentage rate. The APR takes into account not only the interest rate, but also any fees or charges associated with the loan or credit card.
a. If you put half of the available money each month toward the credit card, then you are paying $150.00 per month towards the credit card balance.
We can use the formula for the present value of an annuity to find how many months it will take to pay off the credit card:
PV = PMT × ((1 - (1 + r)⁻ⁿ) / r)
where:
PV is the present value of the debt
PMT is the payment amount per period
r is the monthly interest rate
n is the number of periods
Substituting the values, we get:
754.43 = 150 × ((1 - (1 + 0.011333)⁻ⁿ) / 0.011333)
Simplifying and solving for n, we get:
n = log(1 + (PV ×r / PMT)) / log(1 + r)
n = log(1 + (754.43×0.011333 / 150)) / log(1 + 0.011333)
n = 6.18
Therefore, it will take 7 months to pay off the credit card if you put half of the available money each month toward the credit card.
b. If you put all of the available money each month toward the credit card, then you are paying $300.00 per month towards the credit card balance.
754.43 = 300 ×((1 - (1 + 0.011333)⁻ⁿ) / 0.011333)
Simplifying and solving for n, we get:
n = log(1 + (PV × r / PMT)) / log(1 + r)
n = log(1 + (754.43× 0.011333 / 300)) / log(1 + 0.011333)
n = 3.43
Therefore, it will take 4 months to pay off the credit card if you put all of the available money each month toward the credit card.
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please help......,..
Answer:
try 35?
Step-by-step explanation:
Adrian are 3 ani, iar tatăl lui are 34 de ani. Peste câți ani Adrian va fi de două ori mai tânăr decât tatăl său?
Answer:
27 years
Step-by-step explanation:
Given that :
Adrian's age = 3
Father's age = 34
In how many years will Adrian be twice as young as his father?
Let the number of years = x
2(3 + x) = 34 + x
6 + 2x = 34 + x
2x - x = 34 - 6
x = 28
John ate x ounces of steak. Kate ate 2/3 less . What would a diagram look like to represent this 
It is a structured visual representation of simplified thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
What are the 4 types of charts?Mind maps, flowcharts, fishbone diagrams, hierarchy/org charts, and SWOT analysis charts are the most common types of diagrams covered in this article. It is a structured visual representation of simplified thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
A diagram that shows the parts of an object and their interrelationships is called a diagram.
It is a structured visual representation of thoughts, ideas, structures, relationships, statistical data, anatomy, etc. It's a simplification. It can be used in any part of human activity to clarify a topic or provide an example of a topic.
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Determine the equation (picture).
The line perpendicular to the equation and has the same y-intercept with another is y = - 4 / 3 x + 4.
How to find equation of a line?The equation of a line can be describe as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, lines that a perpendicular follows the rule below:
m₁m₂ = -1
Hence,
y + 6 = 3 / 4 (x - 2)
y + 6 = 3 / 4 x - 6 / 4
y = 3 / 4 x - 6 / 4 - 6
y = 3 / 4 x - 30 / 4
y = 3 / 4 x - 15 / 2
Hence,
3 / 4 m₂ = -1
m₂ = - 4 / 3
Therefore,
slope of the line is - 4 / 3
Let's find the y-intercept of the second line
4x + 5y -20 = 0
5y = -4x + 20
y = -4 / 5 x + 4
y-intercept = 4
Therefore, the line perpendicular to the equation and has the same y-intercept with another is y = - 4 / 3 x + 4.
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if you imput 3 into the table below,what is the resulting y value
If you input 3 into the table, the resulting y value is 5
How to determine the y valueFrom the question, we have the following parameters that can be used in our computation:
x y
-2 9
-1 1
0 2
1 3
2 4
From the above table of values, we can see that;
2 added to the value of x gives y
This means that
y = x + 2
When the input (x) is 3, we have
y = 3 + 2
Evaluate
y = 5
Hence, the output is 5
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Complete question
if you input 3 into the table below,what is the resulting y value
x y
-2 9
-1 1
0 2
1 3
2 4
The following are all 5 quiz scores of a student in a statistics course. Each quiz was graded on a 10-point scale.
Answer:
I think
Category: Calculus and Above
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Hope this help! Try my best :)
DO THE MATH: 2300 ounces of printer ink costs $4,577. How much does the
printer ink cost per ounce? Round your answer to the nearest penny.
$0.46 per ounce
$2.30 per ounce
$1.99 per ounce
$0.50 per ounce
The calculated value of the cost of the printer ink per ounce is $1.99
Calculating how much the printer ink costs per ounce?From the question, we have the following parameters that can be used in our computation:
2300 ounces of printer ink costs $4,577
This means that
Ounces = 2300
Total costs = $4,577
using the above as a guide, we have the following:
Unit rate = Total costs / Ounces
substitute the known values in the above equation, so, we have the following representation
Unit rate = 4577 / 2300
Evaluate
Unit rate = 1.99
Hence, the printer ink costs $1.99 per ounce
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3. Write the inequality that best represents the relationship shown on this number line:
Two trucks leave a warehouse at the same time. One travels due south at an average speed of 48 miles per hour, and the other travels due north at an average speed
of 64 miles per hour. After how many hours will the two trucks be 672 miles apart?
Answer:
6 hours
Step-by-step explanation:
Since the trucks are moving in exactly opposite directions, the relative speed is 48 + 64 = 112 mph
If they have to be 672 miles apart, then the time taken is 672/112 = 6 hours
Check
After 6 hours, the truck traveling south would have covered 48 * 6 = 288 miles south
The truck traveling north would have covered 64 * 6 = 384 miles north
The distance between them after 6 hours would be 288 + 384 = 672 miles
In a lottery game, each ticket cost $12. You have a 10/1000 probability of winning $300, and 50/1000 probability of winning $100. What is your expected value if you buy 1 ticket?
Answer:
80% chance of winning$100
Step-by-step explanation:
50/1000 , 10/1000
=> 0.05, 0.01
0.05 - 0.01
0.04 ÷ 0.05
0.8 × 100
=> 80%
Evaluate the polynomial for x = 3.
- 9x+5
The answer is
(Simplify your answer. Type an integer
integer or a fraction.)
the polynomial with x equal to 3. - 9x+5 The solution, which is an integer, is -22.
What is an example of an integer?An integer is a whole number that is not a fraction and can be positive, negative, or zero. Integers include -5, 1, 5, 8, 97, and 3,043 as examples. Some instances of numbers that are not INTEGERS.
Why do you refer to fractional numbers in this way?A fraction is a numerical value that is a part of an entire. A whole is evaluated by breaking it down into various components.. For instance, 12 represents a half of a full number or item.
in accordance with the stated fact;
-9x+5
put x=3 in given equation;
-9(3)+5
=-27+5
=-22
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THERE ARE 3 HIGHWAYS FROM WINSTON TO HAMLIN ,FOUR HIGHWAYS FROM HAMLIN TO GREENVILLE, THREE HIGHWAYS FROM GREENVILLE TO OCEAN CITY. DETIERMINE THE # OF ROUTES FROM WINSTON TO OCEAN CITY?
Number of highways:
From Winston to Hamlin: 3
From Hamlin to Greenville: 4
From Greenville to Ocean City: 3
The total number of routes from Winston to Ocean city is the product of the number of highways from Winston to Hamlin, etc.
Finally:
\(\begin{gathered} #\text{ of routes }=3\cdot4\cdot3 \\ \\ \therefore#\text{ of routes }=36 \end{gathered}\)You measure 40 watermelons' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 11.4 ounces. Based on this, what is the maximal margin of error associated with a 99% confidence interval for the true population mean watermelon weight.
Answer:
\(35.36,44.64\)
Step-by-step explanation:
Sample size \(n=40\)
Mean weight \(\=x =67\)
Standard deviation \(\sigma=11.4\)
Confidence Interval \(CI=0.99\)
\alpha==0.01
Therefore
\(Z_{\frac{\alpha}{2}}=Z_[0.005]\)
From table
\(Z_{\frac{\alpha}{2}}=2.576\)
Generally, the equation for Margin of error is mathematically given by
\(M.E=Z_{\frac{\alpha}{2}}*(\frac{\sigma}{sqrt{n}}\)
\(M.E=2.576*(\frac{11.4}{\sqrt{40}}\)
\(M.E=4.64\)
Therefore Estimated mean is
\(\=x-M.E<\mu <\=x +E\)
\(40-4.64<\mu< 40+4.64\)
\(35.36<\mu < 44.64\)
\(35.36,44.64\)
A triangle has a base length of 3ac2 and a height 2 centimeters more than the base length. Find the area of the triangle if a = 2 and c = 3.
The area of the triangle, when a = 2 and c = 3, is 1512 square centimeters.
We must apply the formula for the area of a triangle, which is provided by: to determine the triangle's area.
(1/2) * Base * Height = Area
We can enter the values of a = 2 and c = 3 into the formula given that the base length is 3ac2 and the height is 2 centimetres greater than the base length.
Base length =\(3ac^2 = 3 * 2 * (3^2) = 3 * 2 * 9 = 54\) centimeters
Height is calculated as Base Length + 2 (54 + 2 = 56 centimetres).
Using these values as a substitute in the formula, we obtain:
Area =\((1/2) * 54 * 56 = 1512\) square centimeters
centimetres square
It's crucial to understand that the calculation assumes the triangle is a right triangle with the specified base and height and that the given values of a and c are accurately used in the formula.
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what is (1/2 + isqrt3/2)^5?
Answer:
\((\frac{1}{2}+\frac{\sqrt{3}}{2}i)^5=\frac{1}{2}-\frac{\sqrt{3}}{2}i\)
Step-by-step explanation:
Convert 1/2 + i√3/2 to rectangular form
\(\displaystyle z=a+bi=\frac{1}{2}+\frac{\sqrt{3}}{2}i\\\\r=\sqrt{a^2+b^2}=\sqrt{\biggr(\frac{1}{2}\biggr)^2+\biggr(\frac{\sqrt{3}}{2}\biggr)^2}=\sqrt{\frac{1}{4}+\frac{3}{4}}=\sqrt{1}=1\\\\\theta=\tan^{-1}\biggr(\frac{b}{a}\biggr)=\tan^{-1}\biggr(\frac{\frac{\sqrt{3}}{2}}{\frac{1}{2}}\biggr)=\tan^{-1}(\sqrt{3})=\frac{\pi}{3}\\\\z=\cos\frac{\pi}{3}+i\sin\frac{\pi}{3}\)
Use DeMoivre's Theorem
\(\displaystyle z^n=r^n(\cos(n\theta)+i\sin(n\theta))\\\\z^5=1^5\biggr(\cos\biggr(\frac{5\pi}{3}\biggr)+i\sin\biggr(\frac{5\pi}{3}\biggr)\biggr)\\\\z^5=\frac{1}{2}-\frac{\sqrt{3}}{2}i\)
A bird flying at 15 m
above sea level dives vertically 2 m
into the sea to catch a fish and returns to its initial height.
What was the total vertical distance it travelled?
The bird covered 34 metres of vertical space overall. Warm-blooded, feathery animals with the ability to fly are known as birds.
The bird soared 15 m above the water, dove 2 m vertically, and descended to a depth of the water that was 15 + 2 = 17 m below its starting height. The bird must fly 17 m vertically upwards in order to cover the same distance in the other direction in order to return to its starting height.
Consequently, the bird travelled a total vertical distance of 34 metres (17 metres when diving and 17 metres while returning to its starting height).
Hence, the bird covered 34 metres of vertical space overall.
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if f(x)=3 what is x?
Answer:
0
Step-by-step explanation:
srry if it's wrong :/
Which relation is a function?
The only graph that represents a function is: Graph D
How to identify a function?A function is defined as a relationship or expression that involves one or more variables. It typically has a set of input and outputs. Each input has only one output. The function is the description of how the inputs relate to the output.
A function is a relation which describes that there should be only one output for each input (or) we can say that a special kind of relation (a set of ordered pairs), which follows a rule i.e., every X-value should be associated with only one y-value is called a function.
From the graphs, we can see that:
Graph A has 2 outputs at x = -2
Graph B has 2 outputs at x = 0
Graph C has two outputs at x = -1
Graph D has a unique output for every input and as such it is a function
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