Answer:
[tex]P(D|M) = \frac{5}{9}[/tex]
Step-by-step explanation:
Given
The sample space
Required
Probability that D is chosen at least twice provided that M is chosen first
First, list out all outcomes where M is selected first
[tex]M = \{MDA,,MAA,MAM,MAD,MMA,MMM,MDM,MDD,MMD\}[/tex]
[tex]n(M) = 9[/tex]
Next, list out all outcomes where D appears at least 1 when M is first
[tex]D\ n\ M= \{MDA,MAD,MDM,MDD,MMD\}[/tex]
[tex]n(D\ n\ M) = 5[/tex]
So, the required probability is:
[tex]P(D|M) = \frac{n(D\ n\ M)}{n(M)}[/tex]
[tex]P(D|M) = \frac{5}{9}[/tex]
Assume that blood pressure readings are normally distributed with a mean of 117 and a standard deviation of 9.6. If 144 people are randomly selected, find the probability that their mean blood pressure will be less than 119.
Answer:
0.9938
Step-by-step explanation:
Let mean blood pressure be = x
Pr ( x < 119 ) can be found using ' z value ' = ( x - u ) ÷ ( s / √n ) ; where x = 119 , u = mean = 117 , n = no. of sample items = 144 , s = standard deviation = 9.6
z = (119 - 117) ÷ (9.6 / 144) = -2 ÷ (9.6 / 12) = -2 / 0.8 → z = 2.5
Pr (x < 119) = P (z < 2.5)
P = 0.9938
cot(-x)*sin(x) = -cos x
help pls lol
simplify that fist answer gets brainliest and if its a bs answer it doesn't count :D
Answer:
0
Step-by-step explanation:
first you will need to know the negative angle identities, which show that cot(-x)=-cot(x), you can then simplify that to -(cos/sin) so when you multiply by sin(x), or sin(x)/1, the sines cancel out and you are left with -(cos(x)/1)*(1/1) so your equation is now -cos(x)=-cos(x), so when you add the cosines over, you get zero
fast fat sfast eeeee
Step-by-step explanation:
3/9-2/93-2/91/9stay safe healthy and happy..Answer:
1/9
Step-by-step explanation:
=3/9 -2/9 =1/?
=3-2/9 =1/?
=1/9 .
I hope it helps u
mark me as brainlist answer
thank you
Ill give u 100 pointsss
Answer:
circumference of a circle :
[tex]2\pi r\\[/tex] = 2 π x 6 = 12π inches
Which graph represents function g if g(x)=f(2x)
The new function g(x) which is equal to f(2x) will be stretched or compressed by the factor 2.
What is a function?It is defined as a special type of relationship and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have a function f(x) shown in the coordinate plane.
The function g(x) = f(2x)
As we can see in the new function g(x) it is the transformation of the f(x).
Transformation is applied as below:
x → 2x (x is replaced by the twice of it)
= f(x)
= f(2x)
= g(x)
When the function is multiplied by a positive number it will be stretched or compressed according to that factor vertically and in the given function the factor is 2 which means the g(x) will be stretched or compressed according to that factor.
Thus, the new function g(x) which is equal to f(2x) will be stretched or compressed by the factor 2.
Learn more about the function here:
brainly.com/question/5245372
((HELP QUICK PLEASE))
Clark and his friends bought strawberry wafers for $2 per packet and chocolate wafers for $3 per packet at a carnival. They spent a total of $30 to buy a total of 14 packets of wafers of the two varieties.
Part A: Write a system of equations that can be solved to find the number of packets of strawberry wafers and the number of packets of chocolate wafers that Clark and his friends bought at the carnival. Make sure you say what each variable means! (Which one is which wafer type?)
Part B: How many packets of chocolate wafers and strawberry wafers did they buy? Explain how you got the answer and why you selected a particular method to get the answer.
Answer:
Step-by-step explanation:
A. S=strawberry, C=chocolate
S+C=14 equation 1
2s+3c=30 equation 2
B. -2(s+c)=-2(14) multiply equation 1 by -2 to use elimination method
-2s+-2c=-28 modified Equation 1
2s+ 3c=30. Equation 2
C=2 add above two equations.
solve for s
s+c=14
s+2=14
s=12
Used elimination method since it was easier to add the two equations.
check answer by inputting s,c values in either equation.
2s+3c=30
2(12)+3(2)=30
24+6=30
30=30
9514 1404 393
Answer:
2s+3c=30s+c=142 chocolate12 strawberryStep-by-step explanation:
Part A:
I like to use variable names that remind me what they stand for. Here, we can use s and c for the numbers of strawberry and chocolate packets, respectively. The two equations we can write based on the problem statement are ...
2s + 3c = 30 . . . . . . . the total cost of the purchase
s + c = 14 . . . . . . . . . . the number of items purchased
__
Part B:
Ordinarily, I would use one equation for the problem. That equation can be arrived at by substituting for s using the second equation. We choose to substitute for s so the only remaining variable is the one representing the highest-value contributor to the total cost.
s = 14 -c
2(14 -c) +3c = 30 . . . . substitute for s
28 +c = 30 . . . . . . . . . simplify (notice the coefficient of c is positive)
c = 2 . . . . . . . . . . . subtract 28
s = 14 -2 = 12 . . . . find s using the above equation
They bought 2 packets of chocolate and 12 packets of strawberry wafers.
__
Explanation of choices
When the total purchase is n items and x of them are of one kind, then n-x is the number of the other kind. You don't need to write a second equation to figure that out. Hence the problem can be described by a single equation, such as the one highlighted above. Doing this lets you skip a variable definition and a couple of solution steps you don't really need.
The choice of variable as being the high-cost item ensures that its coefficient in the equation will be positive. Fewer errors are made when arithmetic is done with positive numbers. Again, recognizing that early on saves headaches down the line.
Getting to a generic solution
Note that the number we subtract (28) is the "would be" cost of all of the items purchased being the lowest-cost item (14 strawberry packets). This recognition can let you do the entire problem in your head. The difference between the actual cost and the "would be" cost is the result of replacing some number of the lowest-cost items with the higher-cost ones. The difference between total costs is divided by the difference in cost per item to find the number of the higher-cost item. That is the answer to all problems of this type. (30 -14(2))/(3-2) = 2 = the number of $3 packets.
Some1 help plzz hurry
Answer:
Your answer should be A because that is the only one that multiplies them all by 11
HOPE THIS HELPS
-Todo ❤️
Step-by-step explanation:
Use any method to solve. Write the answer as an ordered pair.
6x + y = 12
-4x - 2y = 0
A. (-6, 3)
B. (3, 6)
C. (6, 3)
D. (3, -6)
Answer:
[tex]x = 3[/tex]
Step-by-step explanation:
[tex]6(2)x + (2)y = 12(2) \\ + \\ - 4x - 2y = 0 \\ = \\ 8x = 24 \\ x = 24 \div 8 \\ x = 3[/tex]
Pls someone help me i’ve been asking for so long and no one answers
Help! Can anyone help? I’ve been stuck.. I’ll make sure to give Brainly. The answer is not 3,850. Thank you.
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Answer:
$3400
Step-by-step explanation:
The way these tax tables are structured, you pay 3% on the first $10,000, 5% on the next $40,000, and 5.5% on the remaining $20,000 above $50,000.
tax = 0.03·10,000 +0.05·(50,000 -10,000) +0.055·(70,000 -50000)
= 300 + 2000 +1100
= 3400 . . . dollars
The tax owed on $70,000 is $3,400.
_____
Additional comment
I like to rewrite this sort of table to a different format:
3% of income . . . . . . . . . . . . . . . applies for income ≤ 10,000(5% of income) -$200 . . . . . . . . applies for 10,000 < income ≤ 50,000(5.5% of income) -$450 . . . . . . .applies for 50,000 < income ≤ 100,000For an income of $70,000, the tax computation using this form is one multiplication and one addition, rather than 3 multiplications and 4 additions as used when navigating the given table.
help me ugent
12 x 12 ^ 1
Answer:
144 lol
Step-by-step explanation:
Question 11 of 25
Which confidence level would produce the widest interval when estimating
the mean of a population from the mean and standard deviation of a sample
of that population?
A. 38%
B. 26%
C. 54%
D. 61%
61% confidence level would produce the widest interval since it is the highest.
Confidence intervalZ score is used to determine by how many standard deviation the raw score is above or below the mean.
Confidence interval is given by: mean ± margin of error
The margin of error is given by: [tex]z_\frac{\alpha }{2}* \frac{standard\ deviation}{\sqrt{sample\ size} }[/tex]
The confidence interval is dependent on the margin of error which also depends on the z score of the confidence level, hence the interval increases as the confidence level increases.
61% confidence level would produce the widest interval since it is the highest.
Find out more on Confidence interval at: https://brainly.com/question/15712887
If you help me l will give you the brainlest ☑️☑️
Answer:
64 (if 4 x 4 x 4) or
12 (it could be any of them)
Step-by-step explanation:
Since "3" is related to l x w x h.
You can either do 4 x 4 x 4
or
4 x 3
It depends what formula (aka L x W x H).
Answer:
64
Step-by-step explanation:
= [tex]4^{3}[/tex]
= (4) * (4) * (4)
= 64
Hope this helps :)
1. Find the approximate volume of a sphere with a diameter of 12cm
2. Find the approximate volume of a cone with a diameter of 14cm and a height of 9 cm
Answer:
si simon chavon
Step-by-step explanation:
i lowky need this question not an fake answer !
Answer:
is there a graph that shows where the point is? I can’t help without a graph
Step-by-step explanation:
Mai and Elena are shopping for back-to-school clothes. They found a skirt that originally cost $30 on a 15% off sale rack. Today, the store is offering an additional 15% off.
To find the new price of the skirt, in dollars, Mai says they need to calculate 30. 0.85 0.85. Elena says they can just multiply 30.0.70.
1. How much will the skirt cost using Mai's method?
2. How much will the skirt cost using Elena's method?
3. Explain why the expressions used by Mai and Elena give different prices for the skirt.
Answer:
Mai
Step-by-step explanation:
1. 21.675 R $22
2. $21
Mai is the correct method because 15%-100%=85, which shows the percentage that is left to multiple. Then she multiples 0.85 times 2 as she was able to take off 15% twice. Elena's is incorrect because she added the two 15% off and subtracted that by 100 giving her 70. Which is the incorrect decimal to multiple by. Hope this helps.
Go check out Quelenasboutique on Etsy
200 shares of a stock were bought for $58 per share the broker's
commission was $40 plus $0.25 / share. The stock was later sold for $66/
share the broker's commission was $50 plus $0.32/ share. Calculate the
profit from the sale
$1596
$1000
$1396
$1624
Answer:
1396
Step-by-step explanation:
Profit= revenue-cost
Let's start off by calculating the revenue (the amount they get when they sold the stock) 200*66=13200
Now we need to calculate the cost
40+50+200(.32+.25+58)=11804
13200-11804=1396
Answer:C is correct
Step-by-step explanation:
200*58= 11600
Commission = 40+ (200*0.25)
Commission = 90
Total = 11690
Sell
200*66= 13200
Commission 50+ (0.32*200)
Commission = 114
Sell for 13200-114 = 13086
Profit = 13086 - 11690
Profit = 1396
It is helpful
What is the median of the following numbers? 6,4,1,9,3,8,3,5, 10
please help
Answer:
5
Step-by-step explanation:
Mark brainliest
Answer:
5Explanation:
given:
6, 4, 1, 9, 3, 8, 3, 5, 10
so let's sort it first:
1, 3, 3, 4, 5, 6, 8, 9, 10
the Median is the middle of a sorted list of numbers, and it's 5 in this case
(It doesn't matter that some numbers are repeated in the list)
4 hunting, 7 fishing, 6hiking, and 3 camping events. How many different outdoor expeditions possible?
Answer:
its 420
Step-by-step explanation:
420+69+69=420
Is anyone brave enough to figure this out??? I’ll give Brainly (ToT) thank you !!
Answer: $52.50
Step-by-step explanation:
There is only 12 months and the interest compounds yearly so I guess it is just
3500 x 1.5% = 3500 x 1.5 / 100 = 35 x 1.5 = $52.50
Rounding is not needed
Please help no links or get reported
Parentheses are placed differently in each of the following expressions. Drag the tiles to match the correct answer with each of the expressions. Tiles may be used once, more than once, or not at all.
16 28 88 196
30−2×3+4=
(30−2)×3+4 =
30−2 × (3+4)=
(30−2)x(3+4)=
Answer:
1. 28 2. 88 3. 16 4. 196
Your welcome! :)
guys help me im du.mb
Answer:
-2/3x
hope this helps
have a good day :)
Step-by-step explanation:
Quadrilateral H prime is the image of quadrilateral H after a sequence of transformations. If quadrilateral H prime is congruent to quadrilateral H, which transformations could have been used? a dilation by a scale factor of 2 followed by a reflection a rotation followed by a dilation by a scale factor of One-half a reflection, a translation of 1 unit left, and then a dilation by a scale factor of 3 a translation of 6 units down, a rotation, and then a reflection
9514 1404 393
Answer:
(d) a translation of 6 units down, a rotation, and then a reflection
Step-by-step explanation:
Dilation by any scale factor other than 1 will prevent the original being congruent with its image. The only answer choice with no dilation is the one shown above.
What is the radius of a hemisphere with a volume of 1773 cm”, to the nearest tenth
of a centimeter?
Answer is - in cms
Answer:
R=9.5
Step-by-step explanation:
If anyone could pls do this for me
https://brainly.com/question/23716720
Answer:
Radius(r) = 9.5 cm
Happy learning!
Applepi101
Sams rectangular swimming pool measures 1 1/2 meters deep, 10 meters long, and 7 meters wide. What is the volume of the swimming pool?
Answer:
[tex]105\:\mathrm{m^3}[/tex]
Step-by-step explanation:
The volume of a rectangular prism is given by [tex]V=l\cdot w\cdot h[/tex]. Plugging in given values, we have [tex]V=1.5\cdot 10\cdot 7=\boxed{105\:\mathrm{m^3}}[/tex].
Answer:
105
Step-by-step explanation:
Length × Width × height
10×7× 1.5
(10×7) 1.5
70×1.5
=105
21.)
A rock concert brought in $432,500 on the sale of 9,500 tickets. If the tickets sold for
$35 and $55 each, how many of each type of ticket were sold?
Answer:
Step-by-step explanation:
a+b=9500 equation 1
35a+55b=432500 equation 2
a=9500-b modified equation 1 to isolate a
35(9500-b)+55b=432500 substitute value of a in equ 1 into value of a equ 2
332500-35b+55b=432500
20b=100000
b=5000
solve for a
a + b=9500
a + 5000=9500
a=4500
check answer:
35a+55b=432500
35(4500)+55(5000)=432500
157500+275000=432500
432500=432500
In the figure below, NM and NP are examples of ______ because they share an endpoint.
please look at picture.
intersection is the answer
Which expression is equivalent to 30 ÷ (3 + x)?
Answer:
G maybe?
Step-by-step explanation:
Ms. Patterson is putting up new border on her bulletin boards. If the bulletin board is 5.5 feet by 2.75 feet, how much border will she need?
Answer:
16.5 feet
Step-by-step explanation:
Length (L) = 5.5 feet
Width (W) = 2.75 feet
2(l) + 2(w)2(5.5) + 2(2.75)11 + 5.516.5 feet
Ms.Patterson need 16.5 feet border.
Please mark as brainliest if answer is right
Have a great day, be safe and healthy
Thank u
XD
hey guys in the middle of my final! please help? will mark the brainiest + 30 points !
Answer:
X=90
..............