Answer:
0% probability that 3 of them have insurance
Step-by-step explanation:
For each American, there are only two possible outcomes. Either they have insurance, or they do not. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
Twenty-percent (20%) of Americans have no health insurance.
This means that 80% have insurance, so [tex]p = 0.8[/tex]
Randomly sample n = 15 Americans.
This means that [tex]n = 15[/tex]
What is the probability that 3 of them have insurance?
This is [tex]P(X = 3)[/tex]
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 3) = C_{15,3}.(0.8)^{3}.(0.2)^{12} = 0[/tex]
0% probability that 3 of them have insurance
Sry the app makes the photo so bad quality but anyways can someone please help me
Answer:
B also the full name of vertically angles is called the vertically opposite angle theorem or voat
How many China stick insects that are a length of 64 mm will it take to make one decimeter, one meter, one decameter, one hectometer, and one kilometer? I NEED THIS ASAP, LIKE RIGHT NOW, PLEASE I BEG YOUUUU
Answer:
deciameter form is 16.256.... one meter is 100.... one decameter 100.... one hectometer is 10000.... one kilometer 10000
Step-by-step explanation:
4x-1=3(x-1) Please help!
Answer:
x=-2
Step-by-step explanation:
4x-1=3x-3
x=-2
X = -2
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
prove the given identity
Step-by-step explanation:
3. Let us take apart the right side
1+cos2x = 1 + cos^2x - sin^2x
1 - sin^2x = cos^2x
therefore we have 2cos^2x
Therefore we just have cos^2x/cos^2y = 2cos^2x/2cos^2y, which is true.
4. tan(x/2) = +/- sqrt((1-cosx)/(1+cosx)) using half angle identities for sin and cos.
Therefore tan^2(x/2) = (1-cosx)/(1+cosx)
If we multiply top and bottom by tanx, we get
(tanx - sinx)/(tanx + sinx), which is the right side.
-18/36+12/36
Whats the sum?
Answer:
-1/6
Step-by-step explanation:
The value of x must be greater than
0
1
3
7
LOOK AT PIC FOR ANSWER
Step-by-step explanation:
I guess the answer is 7....
I am not sure....I tried
I need help please help me this math
evaluate sigma notation k=0 4 3k + 1
The answer should be 126 or A.
Rate of change on a graph.- I'll give brainly for the answer, thank you
Answer:
The slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]
Option C is correct option.
Step-by-step explanation:
We need to find the slope (rate of change) of the graph
The formula to calculate slope is: [tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]
Taking two points from the graph: (You can take any two points from the graph)
Point 1 (-4,-3)
Point 2 (-2,0)
We have: [tex]x_1=-4, y_1=-3, x_2=-2, y_2=0[/tex]
Putting values in the formula and finding slope
[tex]Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{0-(-3)}{-2-(-4)} \\Slope=\frac{0+3}{-2+4} \\Slope=\frac{3}{2}[/tex]
So, the slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]
Option C is correct option.
How do the graphs of the functions differ from the graph of f(x)=3.5x^3?
For each function, select Steeper, Less steep, or Reflected over the x-axis to describe the differences between the graph of the function and the graph of f(x).
Select all answers that are correct.
Given:
The function is [tex]f(x)=3.5x^3[/tex].
To find:
Whether the given function is Steeper, Less steep, or Reflected over the x-axis to describe the other function.
Solution:
Transformation of function: If f(x) is function and
[tex]g(x)=a\ f(x)[/tex]
Here, a is vertical stretch or compression.
If 0<|a|<1, then g(x) is less steeper than f(x) because f(x) is vertically compressed.
If |a|>1, then g(x) is steeper than f(x) because f(x) is vertically stretched.
If a is negative, the f(x) is reflected over the x-axis, to get g(x).
On comparing the function [tex]p(x)=4.5x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get 4.5>3.5 So, it is the case vertical stretched and p(x) is steeper than f(x).
On comparing the function [tex]q(x)=-x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get |-1|=1<3.5 So, it is the case vertical compression and q(x) is less steeper than f(x) and because of negative sign the function is reflected over axis.
On comparing the function [tex]r(x)=3x^3[/tex] with [tex]f(x)=3.5x^3[/tex], we get 3<3.5 So, it is the case vertical compression and r(x) is less steeper than f(x).
Therefore, [tex]p(x)=4.5x^3[/tex] is steeper.
[tex]q(x)=-x^3[/tex] is less steep and reflected over the x-axis.
[tex]r(x)=3x^3[/tex] is less steep.
A jewelry store marks up the price of bracelets they purchase at $30.00 each by 75%. What is the markup and new price of each bracelet?
Write the equation that passes through the following points:
(1,1) and (3,3)
Answer:
y=x
Step-by-step explanation:
That's legit it. Type it into a graphing calc and it goes through(1,1) ad (3,3).
Please and thank you
Parallelogram PQRS is rotated 90° clockwise about the origin to create parallelogram P'QʻR'S'. Which rule describes this transformation? (Please leave a small explanation)
In the figure, PQ // RS. Find the value of x.
Answer:
x=57
Step-by-step explanation:
add a line perpendicular to PQandRS
then 90+90+130+116+2x=540
2x=114
x=57
in the figure PQ//RS
the value of x=33
250% of what number 152.5
The blue dot is at what value on the number line?
?
-8
-10
Answer:
I think the answer is negative five (-5)
Find the coordinates of point B
Answer:
uhm where is the chart??
Answer: square root 2 over 2
Step-by-step explanation: edg BS algebra2b
Which is the graph of a quadratic equation that has a negative discriminant
Answer:
The only one
Step-by-step explanation:
The one that is shown has a negative b^2-4ac value.
We know this because the function has no real roots -> that means that they must be complex, which can only occur if b^2-4ac < 0
Answer:
it's D, the last graph.
Step-by-step explanation:
took the unit test review and made a 100
A number is divided by 5 then decreased by 5. It becomes -2. Find the number
Calculate the length of x.
Answer:
B
Step-by-step explanation:
Use the pythagorean theorem to find the hypotenuse. You can do this by squaring 12 and 11 (separately) and then adding those together. You'll get 265. However, since this is c squared and not c, you have to find the square root for the correct answer. The square root of 265 is approximately 16.28. Hope this helps!
Write a numerical expression for the word expression. The product of 7 and 12
Answer:
7x12
Step-by-step explanation:
product is multiplication
Here is a tape diagram representing the ratio of red paint to yellow paint in a mixture of orange paint.
What is the ratio of yellow paint to red paint? Type your answer in the format: 3:4
Answer:
2:3
Step-by-step explanation:
So there are 9 cups of red paint
There are 6 cups of yellow paint
Now we need yellow:red
6:9
Simplify it
2:3
So the ratio is 2:3 for yellow to red paint
Answer:
Step-by-step explanation: 2:3
Sophia exchanged 1000 U.S. dollars for the South African currency which is called the rand. The exchange rate was 8.05 rand to 1 dollar please explain how you know
Answer:
Sophia gets 7,150
Step-by-step explanation:
40 POINTSSSS
Please make sure it is correct
which expression is equavalent to -3(2m-1)-n
A 6m-n-3
B 6m-n+3
C -6m-n-3
D -6m-n+3
Answer:
D.) -6m - n + 3
Step-by-step explanation:
-3 (2m - 1) - n
-6m + 3 - n
-6m - n + 3
If I helped, please mark me the Brainliest!?!
Which of these statements best describes the relation shown in Item 1?
Answer:
It is a many-to-one relation
Step-by-step explanation:
Given
See attachment for relation
Required
What type of function is it?
The relation can be represented as:
[tex]\left[\begin{array}{c}x\\ \\-5\\-2\\1\\5\end{array}\right][/tex] [tex]\left[\begin{array}{c}y\\ \\10\\11\\4\\10\end{array}\right][/tex]
Where
[tex]x = domain[/tex] and [tex]y = range[/tex]
Notice that the range has an occurrence of 10 (twice)
i.e.
[tex](x_1,y_1) = (-5,10)[/tex] and [tex](x_2,y_2) = (5,10)[/tex]
In function and relations, when two different values in the domain point to the same value in the range implies that, the relation is many to one.
A recipe for trail mix uses 7 ounces of almonds with 5 ounces of raisins. (Almonds and raisins are the only ingredients.)
How many ounces of almonds would be in a one-pound bag of this trail mix? Explain or show your reasoning.
Answer:
there are 16 ounces in a pound.
16/7=2.28571428
2 full ounces with a bit left over.
2.29
Convert 2.8 radians to degree measure. Round your answer to the nearest hundredth.
Answer:
16.04°
Step-by-step explanation:
[tex]2.8 \: rad = x \: degrees \\ [/tex]
1rad × 180/π = 57.296°
[tex]x = 2.8 \times \frac{180}{\pi} = 16.0428 \\ x = 16.04[/tex]
Gina, Jared, and Edward sat on their grandmother's porch shelling peas for dinner. There were 2 big bowls of peas, and each person shelled an equal amount.
How many bowls of peas did each person shell?
PLSS HELP
Answer: 2/3 bowl
Step-by-step explanation: you divide the 2 bowls by 3 since there are 3 people