When Boubacar commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 21 minutes and a standard deviation of 4 minutes. Using the empirical rule, what percentage of his commutes will be between 9 and 33 minutes
Using the Empirical Rule, it is found that 99.7% of his commutes will be between 9 and 33 minutes.
What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.In this problem, considering a mean of 21 minutes and a standard deviation of 4 minutes, we have that:
9 = 21 - 3 x 4.33 = 21 + 3 x 4.Within 3 standard deviations of the mean, hence, 99.7% of his commutes will be between 9 and 33 minutes.
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Q3: Write the equation in slope-intercept form of the line that is parallel to the
graph of each equation and passes through the given point.
1. y = 3x + 6; (4, 7)
3. y = 1/2 x + 5; (4,-5)
The equations of the lines are y = 3x - 5 and y = (1/2)x - 7
What is an equation?An equation is an expression that shows how numbers and variables are related to each other.
A linear function is in the form:
y = mx + b
Where m is the rate of change and b is the initial value
Two lines are parallel if they have the same slope
1) y = 3x + 6; (4, 7)
The parallel line would have a slope of 3 and pass through (4, 7), hence:
y - 7 = 3(x - 4)
y = 3x - 5
2) y = (1/2)x + 5; (4, -5)
The parallel line would have a slope of 1/2 and pass through (4, -5), hence:
y - (-5) = (1/2)(x - 4)
y = (1/2)x - 7
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switch the order of integration for the double integrals below from dy dx to dx dy, or vice versa. (hint: draw the region on the xy-plane to understand the order.) you are not required to evaluate/solve the double integral: just rewrite it. (a) z 2 0 z 3y 0 (x 4 y e 4yx) dx dy
The order of integration for the double integrals below from dy dx to dx dy, or vice versa is I = ₀∫⁴ √x∫y² eˣ/y² dydx
We need to switch the order of integration
I = ₀∫⁴ ₀∫ⁿ √(xy) dxdy
From n = 0 to n = 4
y = 0 to y = n
Taken horizontal strip
on strip values of y will be fixed and values of x will be varied.
Limits of y are
y = 0 to y = 4
limits of x are
x = y to x = 4
I = ₀∫⁴ ₀∫ⁿ √(xy) dxdy
I = ₀∫² ₀∫y² eˣ/y² dxdy
Taking vertical strip
on strip values of x will be fixed and values of x will be varied.
limits of x are
x = 0 to x = 4
Limits of y are
y = √x to y = 2
I = ₀∫⁴ √x∫y² eˣ/y² dydx
Therefore, the order of integration for the double integrals below from dy dx to dx dy, or vice versa is I = ₀∫⁴ √x∫y² eˣ/y² dydx
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1., express the following properties in propositional logic:
(a) For every location that is a cliff, there is an
adjacent location to it that contains some
non null quantity of resource r3.
(b) For every location that contains some
non null quantity of resource r2,
there is exactly one adjacent location that is a hill
.
(c) Resource r1 can only appear in the corners of the
grid (the corners of the grid are the locations
(1, 1), (K, 1), (1, K), (K, K)).
(a) The proposition can be expressed as ∀x(Cliff(x) → ∃y(Adjacent(x, y) ∧ NonNull(y, r3))).
(b) The proposition can be expressed as ∀x(NonNull(x, r2) → (∃y(Adjacent(x, y) ∧ Hill(y)) ∧ ¬∃z(Adjacent(x, z) ∧ Hill(z) ∧ ¬(z = y)))).
(c) The proposition can be expressed as ∀x(Resource(x, r1) → (Corner(x) ∧ ¬∃y(Resource(y, r1) ∧ ¬(x = y) ∧ Adjacent(x, y)))).
(a) In propositional logic, we use quantifiers (∀ for "for every" and ∃ for "there exists") to express the properties. The proposition (a) states that for every location that is a cliff (Cliff(x)), there exists an adjacent location (Adjacent(x, y)) to it that contains some non-null quantity of resource r3 (NonNull(y, r3)).
(b) The proposition (b) states that for every location that contains some non-null quantity of resource r2 (NonNull(x, r2)), there is exactly one adjacent location (y) that is a hill (Hill(y)), and there are no other adjacent locations (z) that are hills (¬(z = y)).
(c) The proposition (c) states that resource r1 (Resource(x, r1)) can only appear in the corners of the grid (Corner(x)), and there are no other adjacent locations (y) that contain resource r1 (Resource(y, r1)).
By using logical connectives (∧ for "and," ∨ for "or," ¬ for "not"), quantifiers (∀ for "for every," ∃ for "there exists"), and predicate symbols (Cliff, NonNull, Resource, Hill, Corner), we can express these properties in propositional logic to represent the given statements accurately.
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A bag has 9/10 cup of
flour. Kahlen is making
pancakes that call for 3/5
cup of flour. How many
batches of pancakes can
she make with this bag of
flour?
Dive the total amount of flour by the amount needed for each batch of pancakes.
9/10 / 3/5
When dividing by a fraction flip the second fraction over and change the division to multiplication.
9/10 x 5/3 = (9 x 5) / (10 x 3) = 45/30 = 1 15/30 = 1 1/2 batches
Answer: 1 1/2
Answer:
11/2
Step-by-step explanation:
want je hebt dus 9/10 maar je moet allen maar 3/5 maken dus samen is het 11/2
4. In a class of students, the following data table
summarizes how many students have a cat or a dog. What
is the probability that a student chosen randomly from the
class has a dog?
Has a dog
Does not have a dog
Has a cat Does not have a cat
16
4
6
3
The probability that a student who had a dog also had a cat would be = 7/25.
How to calculate the possible outcome of the given event?To calculate the possible outcome of the given event, the formula for probability should be used and it's given below as follows. That is;
Probability = possible outcome/sample space
possible outcome = 7
sample space = 7+2+3+13 = 25
Probability = 7/25
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The area of a circle will _____ be larger than the area of a polygon circumscribed about the circle.
always
often
sometimes
never
Answer:
Often
Step-by-step explanation:
Hope this helps :D
Which graph shows the solution to the inequality −2(2x+3)≤26?
Answer:
x≥−8
Step-by-step explanation:
Step 1: Simplify both sides of the inequality.
−4x−6≤26
Step 2: Add 6 to both sides.
−4x−6+6≤26+6
−4x≤32
Step 3: Divide both sides by -4.
−4x/−4 ≤ 32/−4
x≥−8
estimating e^1.45 using a taylor polynomial about x=2, what is the least degree of the polynomial that assures an error smalle than 0.001
Answer:
The least degree of the polynomial that assures an error smaller than 0.001 is 4.
The Lagrange error bound for the Taylor polynomial of degree n centered at x=2 for e^x is given by:
```
|e^x - T_n(x)| < \frac{e^2}{(n+1)!}|x-2|^{n+1}
```
where T_n(x) is the Taylor polynomial of degree n centered at x=2.
We want the error to be less than 0.001, so we have:
```
\frac{e^2}{(n+1)!}|x-2|^{n+1} < 0.001
```
We can solve for n to get:
```
n+1 > \frac{e^2 \cdot 1000}{|x-2|}
```
We know that |x-2| = 0.45, so we have:
```
n+1 > \frac{e^2 \cdot 1000}{0.45} \approx 6900
```
Therefore, n > 6899.
The least integer greater than 6899 is 6900, so the least degree of the polynomial that assures an error smaller than 0.001 is 4.
The fourth-degree Taylor polynomial centered at x=2 for e^x is given by:
```
T_4(x) = 1 + 2x + \frac{x^2}{2} + \frac{x^3}{6} + \frac{x^4}{24}
```
We can use this polynomial to estimate e^1.45 as follows:
```
e^1.45 \approx T_4(1.45) = 4.38201
```
The actual value of e^1.45 is 4.38202, so the error in this approximation is less than 0.001.
Step-by-step explanation:
help meeeeeeeeeee pleaseeeeeeeeeeeee!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Can't be solved
Step-by-step explanation:
Using Pythagoras theorem,
H2= O2 + A2 (where, H= Hypotenuse,O=Opposite,A=Adjacent)
The hypotenuse,H=7feet long
If the opposite side of the triangle is 4 feet longer than the adjacent side, then;
O=A+4
while, A=A
,then using H^2= O^2 + A^2(The 2 are power,that is square)
7^2 = (A+4)^2 + A^2
49= (A+4)(A+4) + A^2
49=A^2 +4A+4A+16 + A^2
49=A^2+8A+16+A^2
(collect like terms)
49-16=A^2+A^2+8A
33=2A^2+8A
Then a quadratic equation,
2A^2+8A=33
2A^2+8A-33=0,
using (-b+/-√4ac) /2a
where b=8, a=2, c=-33
[-8 +/-√4*2*(-33) ]/2(2)
-8 +/-
A helium atom has a diameter of about 0.000000000062 meters. The diameter of the sun is about
1,400,000,000 meters. Express the diameter of each in scientific notation. About many times larger is
the diameter of the sun than the diameter of a helium atom?
Step-by-step explanation:
diameter of the sun divides the diameter of an helium atom.
helium atom = 0.000000000062 = 6.2 × 10^-11
Sun = 1,400,000,000 = 1.4 × 10^9
\( \frac{1.4 \times 10 {}^{ 9} }{6.2\times 10 {}^{ - 11} } \)
\( \frac{1.4}{6.2} \times 10 {}^{9 + 11} \)
\(0.225 \times 10 {}^{20} \)
so therefore the diameter of the sun is 0.225 × 10^20 times bigger than the nucleus of an helium atom
Solve for P if E = 2.50 and r = 2.00 given that E = P4πr2
Answer:
P = 0.05
Step-by-step explanation:
E = P4πr²
2.50 = P4π(2)²
2.50 = P4π4
2.50 = P(50.265)
P = 0.05
I am so confused..please help 0-0
I NEED HELP WITH MY MATH HOME WORK
Which ones are functions?
Answer:
14 and 15 are functions
Step-by-step explanation:
Answer:
13. no 14. yes 15. yes
Step-by-step explanation:
13 doesn't pass vertical line test
14 does pass vertical line test
15 none the numbers share the same for example if it was (0,12) and (-3,12) it would not be a function because they both have 12 as their y.
A store has a 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.
What is the original price of the pair of headphones?
Answer:
21.6
Step-by-step explanation:
i did the math
suppose you want to buy software for your computer. One piece of software costs $20.75. Another costs $10.59 and a third costs $18.25.
Use mental math to find the total cost. Explain.
How much more is the first piece of software than the second? Use mental math to decide.
Answer:
The total cost is 49.59 the answer for the second question is 10.16
Step-by-step explanation:
Part A. self explanatory, i just added all of the pieces together and got 49.59.
Part B. I just solved the expression 20.75 - 10.59 and got 10.16.
Write the point slope form of the equation of the line using the point (-4,-2)
Answer:
\(y + 2 = \frac{5}{4} (x + 4)\)
Step-by-step explanation:
1) First, find the slope of the line. Take two points the line intersects and use them for the slope formula, \(\frac{y_2-y_1}{x_2-x_1}\). We already know the line intersects (-4, -2). Just choose any one of the points you can see the line intersecting (in this case, I chose (0,3)) and plug in its values, too. Then solve:
\(\frac{(3)-(-2)}{(0)-(-4)} \\\frac{3+2}{0+4} \\\frac{5}{4}\)
So, the slope is \(\frac{5}{4}\).
2) Now that you have the slope, plug in values for the point-slope formula, \(y - y_1 = m (x - x_1)\). In order to write a linear equation with it, the \(x_1\), \(y_1\), and \(m\) have to be substituted for with real values. The \(m\) represents the slope - which means that we should place \(\frac{5}{4}\) there. The \(x_1\) and \(y_1\) represent the x and y values of a point - and the questions wants us to use (-4, -2), so substitute -4 for \(x_1\) and -2 for \(y_1\):
\(y-(-2) = \frac{5}{4} (x - (-4))\\y + 2 = \frac{5}{4} (x + 4)\\\)
Thus, the answer is \(y + 2 = \frac{5}{4} (x + 4)\).
15/16 as a decimal rounded to the nearest hundred
Answer:
0.9375 or 0.94
It cannot be rounder to the nearest hundred, but it can be rounded to the nearest hundredth
You also could've just gone and searched 15/16. T-T
The decimal 15/16 is a decimal rounded to the nearest hundred will be 0.9375.
Decimal consists of two parts whole number and a fraction part. They are separated by a term called decimal.
Example = 532.11
we know that 15/16 is a fraction, so we divide 15/16 on dividing it we will get,
\(\frac{15}{16}\) = \(\frac{9735}{1000}\)
= \(0.9375\)
On rounding to the nearest hundred we get 0.9375.
since it is asked for a hundred place not for the hundredth place so value will remain the same.
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Calvin wants to know the proportion of students at his school who plan to
attend college. he interviews a random sample of students at his school.
he finds that 70% of the students in the sample plan to attend college.
what conclusion can he draw from the sample?
Answer:
30% of students do not plan to attend college.
Elin stays on the international space station for 114.1 hours.Of the space station orbits the earth once every 42 minutes.How many times will it orbit the earth during her stay?
Answer:
163 times
Step-by-step explanation:
Let us first find how many minutes she was on the International Space Station:
1 hour = 60 minutes
114.1 hours = 114.1 * 60 = 6846 minutes
The station orbits earth every 42 minutes. Therefore, the number of times the station will orbit the earth during her stay is:
6846 / 42 = 163 times
What is the simplest form of ^4sqrt324x^6y^8
\(\rm{\green{Answer \: is:-}}\)
\(3xy \sqrt[24]{ {4x}^{2} } \)(3xy^2 4 sqrt 4x^2)
Step-by-step explanation:
Hope it's helpful to youLet's see
\(\\ \rm\Rrightarrow \sqrt[4]{324x^6y^8}\)
\(\\ \rm\Rrightarrow \sqrt{4}{18^2x^6y^8}\)
m√a^n=a^n/m\(\\ \rm\Rrightarrow 18^{2/4}x^{6/4}y^{8/4}\)
\(\\ \rm\Rrightarrow \sqrt{18}x^{3/2}y^2\)
\(\\ \rm\Rrightarrow \sqrt{18}\sqrt[2]{x^3}y^2\)
How do you find a square root of a number? PLease use 81 as an example.
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Five less than 18 times the number x, is less than or equal to - 45. Write an inequality for this statement.
Answer:
18n - 5 ≤ -45
Step-by-step explanation:
what is x+x equal to
what do you mean? theres no math. we cant answer this.
x+x is equal to 0
Answer:
2x
Step-by-step explanation:
x + x = 2x
Eli has bought a shirt and a pair of pants for a total of 600 kr. Simin bought four of those shirts and two of those pants, and it cost her 1500 kr. How much did one shirt cost?
Answer:
Step-by-step explanation:
let the price of one shirt be x and one pant be y
Eli--> x+y=600------eq1
Simin-->4x+2y=1500-----eq2
Solve both the equations
multiply eq1 x 4= 4x+4y=2400
now subtract ew2 from 1
you will get y=450 and x=150
so price of one shirt=150 kr
T/F: a continuous random variable x assumes an (infinitely) uncountable number of distinct values.
True. a continuous random variable x assumes an (infinitely) uncountable number of distinct values.
A continuous random variable is one that can take on any value within a specified range, and it is defined over an interval of real numbers. Since the real numbers are uncountably infinite, a continuous random variable can assume an uncountable number of distinct values. In contrast, a discrete random variable can only take on a countable number of distinct values, since its possible values are restricted to a finite or countably infinite set of numbers.
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HELP PLZ DUE RN BRAINIEST TO WHOEVER RIGHT
Answer:
solutions at -1 and 11
Step-by-step explanation:
(-b ± √b²-4ac) / 2a
in this problem, a = 1, b = -10, c = -11
(10±√100-4(-1)(-11)) / 2(1) =
(10 + √144) / 2 = 22/2 = 11
(10 - √144) / 2 = -2 / 2 = -1
What sentence represents this equation?
413=11−x
11 decreased by 413 is the same as a number.
413 is the same as a number decreased by 11.
413 is the same as 11 decreased by a number.
A number is the same as the difference of 11 and 413.
Answer:
option b
Step-by-step explanation:
413 is the same as a number decreased by 11 because when you say 11 is decreased by a number that means we are subtracting a number from 11 but when you say a number is decreased by 11 it means 11 is being subtracted from a certain number to give 413
I Hope this helps
Enter the ratio as a fraction in lowest terms
15 minutes to 50 minutes
Answer:
3 minutes to 10 minutes
Step-by-step explanation:
15 : 50. Both can be divided by 5
3 : 10