Step-by-step explanation:
When they ask what the prob that at most 3/4 people asked have a pet, they are asking what is the prob that 0, 1, 2, or 3 people answer yes. So you could calculate all 4 of those and then add them together.
However, in this case, since there's only 1 other possible outcome (all 4 have a pet), we could just calculate the prob of that and subtract it from 1 to get the prob of everything else happening.
We'll use the binomial distribution formula where n=4, k=4, and P=.6.
nCk * P^n * (1-P)^(n-k)4C4 * (.6)^4 * (.4)^0.1296
So the prob of at least 3 having pets = 1 - P(all 4 have pets) which is 1-.1296 = .8704. You could double check this by calculating the prob of the other 4 outcomes and then adding them together.
The probability that at least 2 people have a cat is 0.522 or 52.2%.
What is probability?Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.
This is a problem that can be solved using the binomial probability formula, which gives the probability of getting exactly k successes (in this case, people with cats) out of n trials (in this case, people you ask) with a probability of success (in this case, having a cat) of p.
The formula is:
P(k) = (n choose k) × [tex]p^k \times (1-p)^{(n-k)}[/tex]
where (n choose k) is the binomial coefficient, which is equal to n! / (k! × (n-k)!).
For this problem, n = 5 (the number of people you ask), k = 2 (the number of people who have cats), and p = 0.3 (the probability of a person having a cat, according to the survey).
P(2) = (5 choose 2) × 0.3² × 0.7³
P(2) = 0.252
To find the probability of at least 2 people having a cat, we have to add up the probability of getting exactly 2, 3, 4, and 5 people having cats.
P(≥2) = P(2) + P(3) + P(4) + P(5)
Substituting the values we get:
P(≥2) = 0.252 + 0.189 + 0.072 + 0.009 = 0.522
So, the probability that at least 2 people have a cat is 0.522 or 52.2%.
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The figure below is a square. Find the length of side xx in simplest radical form with a rational denominator.
Answer: 9√2
Step-by-step explanation:
The length of each side of the square is 109/25 units.
What is Pythagoras theorem?Pythagoras theorem states that in a right angled triangle, the sum of the squares of the perpendicular and base is equal to the square of the hypotenuse. It can be written as h² = p² + b².
The length of the diagonal of the square in given figure is 9 units.
Suppose each side of square be x unit.
Apply Pythagoras theorem to obtain length of the side as follows,
x² + x² = 9²
=> 2x² = 81
=> x² = 81/2
=> x = 6.36
= 636/100
= 159/25
Hence, the value of x in the simplest radical form is 6.36 units.
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Which one is greater 5.3 or 5 1/3
Answer:
5 1/3 > 5.3
Step-by-step explanation:
1/3 = 0.333... so 5 1/3 > 5.3 as 5 1/3 = 5.333...
The fraction 5 1/3 is greater than 5.3.
What is a fraction?A number expressed as a quotient, in which a numerator is divided by a denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. A fraction represented with its quotient and remainder is a mixed fraction.
For the given situation,
The decimal number is 5.3.
The mixed fraction is 5 1/3.
First, convert this fraction to a decimal number to check which is greater.
[tex]5\frac{1}{3}=\frac{16}{3}[/tex]
⇒ [tex]5.33[/tex]
On comparing these two decimals 5.33 and 5.3, we can conclude that 5 1/3 is greater than 5.3.
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M is the midpoint od AN, A has coordinates (-4,-4), and M has coordinates (-7,1). Find the coordinates of N
Answer:
Solution given:
A(x1,y1)=(-4,-4)
M(x,y)=(-7,1)
N(x2,y2(x,y) let
we have
midpoint(x,y)={(x1+x2)/2,(y1+y2)/2}
(-7,1)={(-4+x)/2,(-4+y)/2} comparing corresponding value
-7=(-4+x)/2
-14=-4+x
x=-14+4
x=-10
and
1=(-4+y)/2
2=-4+y
y=4+2
y=6
coordinates of N is (-10,6)
Someone please help me thank
Step-by-step explanation:
since theyre mutliplied you can separate
(125 / 25) x (x^3 / x^4) x (y^5 / y^2)
when you divide exponents, they subtract
Dont be afraid of negative exponents
(125 / 25) x (x^-1 / 1) x ( y^3)
x^-1 = 1/x
solve for 125/25 and put together the fractions
Answer:
[tex]\frac{5y^3}{x^1}[/tex] or [tex]\frac{5y^3}{x}[/tex]
Step-by-step explanation:
125/25 = 5
x³ - x⁴ = x⁻¹
y⁵ - y² = y³
All together; 5x⁻¹y³
Since the answer has to be positive exponents, it would be;
[tex]\frac{5y^3}{x^1}[/tex]
Hope this helps!
Which of the following relations is a function?
OA. (3, 4), (-3, 2), (6, 1), (-8, 2)
OB. (6, 1), (-3, 4), (3, 1), (6,2)
OC. (3, 4), (-3, 6), (3, 3), (-8, 2)
OD. (3,0), (-3, 3), (6, 1), (-3,5)
Answer:
A. (3, 4), (-3, 2), (6, 1), (-8, 2)
Step-by-step explanation:
OA. (3, 4), (-3, 2), (6, 1), (-8, 2) - function
OB. (6, 1), (-3, 4), (3, 1), (6,2) - this repeats the x value of 6 to two different y values so it is not a function
OC. (3, 4), (-3, 6), (3, 3), (-8, 2)- this repeats the x value of 3 to two different y values so it is not a function
OD. (3,0), (-3, 3), (6, 1), (-3,5)- this repeats the x value of -3 to two different y values so it is not a function
please help!! I'm really confused
Answer: im on this one too
Step-by-step explanation:
Solve the inequality
x/4 is greater than or equal to -6
a) x ≤ –24
b) x ≥ 10
c) x ≥ –10
d) x ≥ –24
Answer:
D
Step-by-step explanation:
x/4≥-6
*4 *4
x≥-24
So it's D.
---
hope it helps
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{\dfrac{x}{4}\geq-6}[/tex]
[tex]\large\text{SUBSITUTE 1 where x is at temporarily, so we can simplify both}\\\large\text{sides of your inequality}[/tex]
[tex]\large\text{NEW EQUATION: }\mathsf{\dfrac{1}{4}x \geq-6}[/tex]
[tex]\large\text{MULTIPLY by 6 to BOTH SIDES}[/tex]
[tex]\mathsf{4\times\dfrac{}{}x \geq 4\times-6}[/tex]
[tex]\large\text{CANCEL out: }\mathsf{4\times\dfrac{1}{4}}\large\text{ because that gives you the value of 1}[/tex]
[tex]\large\text{KEEP: }\mathsf{4\times-6}\large\text{ because it helps you find out the number or value}\\\large\text{that is being compared to your x-value}[/tex]
[tex]\mathsf{4\times-6=\boxed{\bf -24}}[/tex]
[tex]\large\text{So, the number \underline{-24} is being compared to your x-value}[/tex]
[tex]\bullet\large\text{ Your circle is CLOSED and it is shaded to the right side of the}\\\large\text{number}\huge\checkmark\\\\\\\large\textsf{Random fact about the inequality}\uparrow[/tex]
[tex]\boxed{\boxed{\large\text{Answer: \bf x}\bf \geq\large\textsf{\bf -24 \huge\text{Option D.}}}}\huge\checkmark[/tex]
[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Someone help me please!
Answer:
The radius is 25 cm
A
Step-by-step explanation:
Area =[tex]\pi[/tex]* r^2
Area = 625 * [tex]\pi[/tex]
625 [tex]\pi[/tex] = [tex]\pi[/tex] * r^2 The [tex]\pi[/tex]s cancel out
r^2 = 625 Take the square roots of both sides
sqrt(r^2) = sqrt(625)
r = 25
Which expression has the greatest value -12 + 6 -14 or 23 -14 + 2 -11
Answer:
-12 + 6 -14
Step-by-step explanation:
I DONT NEED SLEEP I NEED ANSWERS
Answer:
You asked to solve questions 3 and 5
#3Since CD = EF,
9x - 1 = 41 - 5x9x + 5x = 41 + 214x = 42x = 3EF = 41 - 5*3 EF = 26#5MN = NP as their perpendicular bisectors are of same length.
9x - 43 = 5x + 339x - 5x = 33 + 434x = 76x = 19mMP = 360 - (mMN + mNP)mMP = 360 - (9*19 - 43 + 5*19 + 33) mMP = 104Ed is ordering magazines online. Each magazine costs $6. Shipping will cost an additional $4 for the entire order. Write an inequality that can be used to find the number of magazines, n , Ed can order if he spends no more than $42. What is the greatest number of magazines Ed can order? Explain your answer.
Answer:
If he spent no more than $42 dollars and the shipping is 6 in addition to the 4 dollars. I think he may be able to get 20 magazines.
A start-up company is about to market a new computer printer. It decides to gamble by running commercials during the Super Bowl. The company hopes that name recognition will be worththe high cost of the ads. The goal of the company is that over 40% of the public recognize its brand name and associate it with computer equipment. The day after the game, a pollster contacts 420 randomly chosen adults and finds that 181 of them know thatthis company manufactures printers. Would you recommend that the company continue to advertise during Super Bowls
Reject the null hypothesis and come to the conclusion that there is enough evidence to imply that the percentage of adults who are familiar with the company's name is much more than 40%.
What is the null hypothesis?In order to evaluate whether the percentage of individuals who recognize the company's brand name differs considerably from the company's target of 40%, we must conduct a hypothesis test.
Let p represent the percentage of adults who can name the company's brand. The corporation hopes that more than 40% of adults will recognize its brand name, hence the alternative hypothesis is that p > 0.4.
A one-sample z-test can be used to examine this claim. The test statistic is determined as follows:
[tex]z = \dfrac{(p' - p)} { \sqrt{\dfrac{(p (1 - p)} { n}}}[/tex]
Where p is the null hypothesis value, n is the sample size, and p is the sample proportion.
In this instance, n = 420, p = 0.4, and p' = 181/420 = 0.431. With these values entered into the formula, we obtain:
[tex]z = \dfrac{(0.431 - 0.4)} { \sqrt{(0.4 \times \dfrac{0.6} { 420} }}= 1.65[/tex]
The likelihood of obtaining a z-value of 1.65 or higher is 0.0495 using a basic normal distribution table or calculator (assuming the null hypothesis is true). This is the test's p-value.
When the p-value is less than 0.05, which is considered to be significant (and corresponds to a 95% confidence level), we
Hence, based on this sample of 420 adults, we would advise the company to keep running Super Bowl advertisements as it seems to be succeeding in raising brand recognition among the general public.
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Another 20 point question I need help with
Answer:
Step-by-step explanation:
Hope this helps u!!
PLEASEEE I NEED HELLPPPP
The graph below represents which system of inequalities?
(Answer options at the bottom)
Answer:
The answer is B.
hdjddihfkdhdbfkdudu
Which expression gives the length of QR in the triangle shown below?
Answer:
sqrt( 17^2+ 25^2)
Step-by-step explanation:
Since this is a right triangle, we can use Pythagorean theorem
a^2+b^2 = c^2 where a and b are the sides and c is the hypotenuse
Taking the square root of each side
sqrt(a^2+b^2) = QR
sqrt( 17^2+ 25^2) = QR
Answer:
[tex] \small \sf A. \sqrt{25 {}^{2} + 17 {}^{2} } [/tex]
Step-by-step explanation:
Using pythagoras theorem
( Base) ² + ( Perpendicular) ² = (Hypotenuse) ²
( QS)² + ( RS)² = (OR )²
( 25 )² + ( 5 )² = OR²
Taking square root of each side.
[tex] \sqrt{25 {}^{2} + 17 {}^{2} } = \sqrt{OR}[/tex]
[tex] \sqrt{25 {}^{2} + 17 {}^{2} } = {OR}[/tex]
In 1990, a radio costs $25. Now, the radio costs $5. What is the percent of change?
Answer:
20%
Step-by-step explanation:
[tex]\frac{5}{25} =\frac{1}{5}=0.2=20[/tex]%
Answer:
80% decrease
Step-by-step explanation:
take the difference between the two prices and divide it by the original price, then multiply by 100 (to make it a %)
(25-5) / 25
= 20/25
= .8 x 100
= 80% decrease
maeve has 2 cubic meters of soil does she have enough to fill a garden bed with the dimmension 4m by 2 m by 30 cm
Answer:
no
Step-by-step explanation:
cause she will need (4 x 2) X 30
evaluate 4m-10-8=-2+12
Answer:
Step-by-step explanation:
4m-10=-2+12
4m=-2+12+10
m=20/4
m=5
Answer: M=7
Step-by-step explanation:
Isolate the variable by dividing each side by factors that dont contain the variable.
The school events committee is planning to buy a banner and some helium balloons for graduation night. A store charges them $35 for the banner and $3 for each helium balloon. If the committee has at most $125 to spend, how many helium balloons can they buy
Answer:
30 baloons
Step-by-step explanation:
1. Remove the price of the banner from the total amount you can spend. You should then end up with $90
2. Divide 90 by 3, because each balloon costs $3. You should end up with 30.
Answer:
30 balloons
Step-by-step explanation:
Cost of banner = $ 35
Remaining amount after paying for banner = 125 - 35 = $90
Number of balloons = Remaining amount ÷ cost of one balloon
= 90 ÷ 3
= 30
9.
For the graph of the function, identify the axis of symmetry, vertex and the formula for the function.
A. Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 – x – 1
B. Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + x – 1
C. Axis of symmetry: x = –0.5; Vertex: (–0.5, –0.75); f(x) = –x2 + x – 1
D. Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + 2x – 1
Answer:
Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + x – 1
Step-by-step explanation:
The answer is A because the axis of symmetry is in between 0 and 1, the vertex lies on 0.5 and -0.75, and the parabola opens down so the coefficient of a is -1, and the y-int or the value of c is -1
The vertex of the function is axis of symmetry is and the formula for the function is Option (a) is correct.
Further Explanation:
Given:
Calculation:
The standard form of the parabola is shown below.
Here, the parabola has vertex at and has the symmetry parallel to x-axis and it opens left.
The general form of the parabola can be expressed as follows,
The graph is a downward parabola.
From the graph it has been observed that the vertex of the parabola is
Symmetry of the graph is
The -intercepts of the graph is Therefore, the value of is
The value of is -1 as the graph is a downward parabola.
The vertex of the function is axis of symmetry is and the formula for the function is Option (a) is correct.
Learn more:
1. Learn more about unit conversion brainly.com/question/4837736
2. Learn more about non-collinear brainly.com/question/4165000
3. Learn more aboutbinomial and trinomial brainly.com/question/1394854
Answer details:
Grade: High School
Subject: Mathematics
Chapter: Conic sections
Keywords: vertex, symmetry, symmetric, axis, y-axis, x-axis, function, graph, parabola, focus, vertical parabola, upward parabola, downward parabola.
I need help bad I don’t understand it I’m struggling bad I need help
Answer:
Step-by-step explanation:
angle k is 98 degree because angle k and 98 degree are alternate exterior angles and alternate exterior angles are equal.
A lock has a 3-number code made up of 16 numbers. If none of the numbers are allowed to repeat, how many different ways can you choose three different numbers in order for a unique code?
Answer:
137
Step-by-step explanation:
The number of ways we can choose three different numbers in order for a unique code for this case is 2730
What is Combination?A combination is a technique to determines the number of possible arrangements in a collection of items where the order of the selection does not matter.
We can use combinations for this case,
Total number of distinguishable things is m.
Out of those m things, k things are to be chosen such that their order doesn't matter.
This can be done in total number of ways,
⇒ [tex]^{m} C_{k} =[/tex] m! / (m - k)! k!
If the order matters, then each of those choice of k distinct items would be permuted k! times.
So, total number of choices in that case would be:
⇒ [tex]^{m} P_{k} =[/tex] m! / (m - k)!
This is called permutation of k items chosen out of m items (all distinct).
Given that:
The considered lock as a 3 number code
There are 15 numbers available.
None of the number can repeat.
In a lock, the order of the way numbers are arranged matters.
Because of no repetition allowed, we can simulate this situation as:
The number of ways we can choose 3 numbers out of 15 numbers with order = The number of different ways we can choose three different numbers in order for a unique code.
And we have:
The number of ways we can choose 3 numbers out of 15 numbers with order is,
⇒ [tex]^{m} P_{k} =[/tex] m! / (m - k)!
⇒ [tex]^{15} P_{3} =[/tex] 15! / (15 - 3)!
= 15! / 12!
= 2730
Thus, The number of ways we can choose three different numbers in order for a unique code for this case is 2730
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Of 30 student, 1/3 play sports. Of those who play sports, 2/5 play soccer. How many students play soccer.
Answer:
12
Step-by-step explanation:
the interest for 3 years on Rs2400is Rs576 find the interest on Rs 4200 for 2 yrs at the same rate of interest
Answer:
Solution given:
time [t]=3years
principal [p]=Rs2400
rate[r]=?
simple interest [S.I]=Rs 576
we have
S.I=ptr/100
576=2400*3*r/100
576=72r
r=576/72
r=8%
now
principal [p]=Rs 4200
time[t]=2years
rate[r]=8%
simple interest [S.I]=?
we have
S.I= ptr/100=4200*2*8/100=Rs 672
The required interest is Rs 672.
What is the complete factorization of x^4-17x^2+16?
Answer:
(x +1) (x-1) (x +4) (x-4)
Step-by-step explanation:
The factorization of x^4-17x^2+16 is
(x+1) (x-1) (x+4) (x-4)
Answer:
(x+4)(x-4)(x+1)(x-1)
Step-by-step explanation:
A tin has a radius of 3cm anf height 6cm. Find the volume, in litres of the liquid that will fill the tin to capacity, correct to 2 decimal places
Answer:
The capacity of tin is 0.17 liter.
Step-by-step explanation:
radius, r = 3 cm
height, h = 6 cm
The capacity of the tin is given by
[tex]V =\pi r^2 h\\\\V =3.14 \times 3\times 3\times 6\\\\V = 169.56 cm^3[/tex]
Now
1000 cubic cm = 1 liter
So, the capacity in liter is
V = 0.169 liter = 0.17 liter
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Step-by-step explanation:
Write what you knkw
all triangles' angles add to 180
180 =x + (106 + 48) solve for x
The time, T (seconds) it takes for a pot of water to boil is inversely proportional to the cooker setting, H ,applied to the pot.
When H=6 T=90.
What must the cooker setting be if it takes 5 minutes to boil the water?
Answer:
[tex]1.8[/tex]
Step-by-step explanation:
Since the time for the pot of water to boil is inversely proportional to the cooker setting, H, as one goes up, the other must go down:
[tex]T\propto \frac{1}{H}[/tex]
Convert 5 minutes to seconds:
[tex]5\cdot 60=300\:\mathrm{s}[/tex]
Therefore, from the initial data given (When H=6, T=90), the new time is [tex]\frac{300}{90}=3\frac{1}{3}[/tex] larger. Therefore, H must be [tex]3\frac{1}{3}[/tex] times smaller for them to be inversely proportional.
[tex]H=\frac{6}{3\frac{1}{3}}=\boxed{1.8}[/tex]
An object In geometry with no width,length or height is a:
A. angle
B. line
C. point
D. ray
Answer:
C. Point
Step-by-step explanation:
a point would just be a dot on a graph and it won't have an exact height or size or shape
Math question final part thanks Jim ! :)
Part (e)
See the diagram below that mentions this part.
================================================
Part (f)
See the diagram that mentions this part. It's in a separate image.
The item can be anything really. I'm going to add a trampoline which is a square shown in purple. The square is rotated 45 degrees so it looks like a diamond shape. The rotation isn't necessary but I figured to spice things up compared to the other figures which were mostly squares or rectangles. If we split the purple square into 4 triangles, and apply the pythagorean theorem, then we can find the length of each side of the purple square to be roughly 2.828 cm.
Scaling things up, the trampoline in real life is 2*2.828 = 5.656 meters along each dimension.
With any square the angles are always 90 degrees.