Answer:
8
Step-by-step explanation:
The expected number of boats of the next 12 boats to dock is from Connecticut is 6.
What is Probability?Probability is simply the possibility of getting an event. Or in other words, we are predicting the chance of getting an event.
The value of probability will be always in the range from 0 to 1.
Given that,
Boats from all along the Atlantic coast dock at a busy marina.
Of the first 10 boats to dock at the marina one day, 5 were from Connecticut.
Probability that the boats which dock are from Connecticut = 5/10 = 1/2
When the next 12 boats also arrive,
Expected number of boats from Connecticut = 1/2 × 12 = 6
Out of 12, 6 boats are from Connecticut.
Hence the expected number of boats is 6.
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Solve the following quadratic equation for all values of xx in simplest form. 16+2x²=30
5⁄8 ÷ 3⁄8 =________ pls help me
Answer:
1 [tex]\frac{2}{3}[/tex]
Step-by-step explanation:
Answer:
1 2/3
Step-by-step explanation:
First, you rewrite 5/8÷3/8 as a multiplication problem: 5/8*8/3. Now you simply multiply both numerators and denominators: 5x8/8x3 which equals 40/24. So your final answer will be 40/24 or 1 16/24 which equals 1 2/3.
What is 385 divided by 48
Answer:
the answer is
Step-by-step explanation:
8.0208333333
The math teachers decided to throw a party. One teacher bought 7 cookies and 2 ice cream bars for $10.95. Another teacher bought 4 cookies and 3 ice cream bars for $10.25 . How much did one cookie and one ice cream bar cost, individually?
Answer:
0.95, 2.15
Step-by-step explanation:
cookie-x
ice bar-y
7x+2y=10.95 (*3)
4x+3y=10.25 (*2)
21x+6y=32.85
8x+6y=20.5
21x-8x=32.85-20.5=12.35
13x=12.35
x=0.95
2y=10.95-7*0.95=4.3
y=2.15
Complete the following on lined paper. Show of your all work. 1. Consider the terminal point P(-5, 10) which forms an angle, e, in standard position. (a) Find the measure of the radius, r. (x, y) V 0 (b) Find the measure of angle 0. (c) Find a positive angle coterminal with 0. (d) Find a negative angle coterminal with 0. (e) Find an angle with the same value of cos 0, but is not coterminal with 8.
(a) The measure of the radius, r, is 5√5. (b) The measure of angle θ is approximately -63.43 degrees or approximately 296.57 degrees.
(c) A positive angle coterminal with θ is approximately 656.57 degrees.
(d) A negative angle coterminal with θ is approximately -63.43 degrees.
(e) An angle with the same value of cos θ but not coterminal with θ can be found using arccos(cos θ) + 360 degrees.
(a) To find the measure of the radius (r), we can use the distance formula, which states that the distance between two points (x1, y1) and (x2, y2) is given by the formula [tex]\sqrt{((x2 - x1)^2 + (y2 - y1)^2)}[/tex]. In this case, the coordinates of the point P(-5, 10) represent the values (x1, y1), and the origin (0, 0) represents the values (x2, y2). Plugging in the values, we get [tex]\sqrt{((-5 - 0)^2 + (10 - 0)^2) }[/tex]= sqrt(25 + 100) = sqrt(125) = 5*sqrt(5). So, the measure of the radius is 5*√(5).
(b) To find the measure of angle 0, we can use inverse trigonometric functions. Since the coordinates of the point P(-5, 10) correspond to the values of x and y, we can use the arctan function to find the angle. The formula for finding the angle in standard position is given by arctan(y/x). Plugging in the values, we get arctan(10/-5) = arctan(-2). Using a calculator, we find that the measure of angle 0 is approximately -63.43 degrees or approximately 296.57 degrees (since the angle is in the second quadrant, we add 360 degrees to get a positive coterminal angle).
(c) To find a positive angle coterminal with 0, we can add multiples of 360 degrees to the angle. In this case, adding 360 degrees to the angle of approximately 296.57 degrees, we get a positive coterminal angle of approximately 656.57 degrees.
(d) To find a negative angle coterminal with 0, we can subtract multiples of 360 degrees from the angle. In this case, subtracting 360 degrees from the angle of approximately 296.57 degrees, we get a negative coterminal angle of approximately -63.43 degrees.
(e) To find an angle with the same value of cos 0 but not coterminal with 0, we can use the inverse cosine function. The formula for finding the angle is given by arccos(cos 0). Since cosine is a periodic function, angles with the same value of cosine repeat every 360 degrees. Therefore, we can find an angle by using arccos(cos 0) + 360 degrees.
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PLEASE HELPPPPPPPPPPPPP
Answer:
with what??????????????
A 13 meter ladder is leaning against a wall. It reaches 12 meters up the wall How far is the base of the ladder from the base of the wal
Answer:
5
Step-by-step explanation:
Pythagorean Theorem. The 13-meter ladder is leaning against a wall, so it's the hypotenuse.
It reaches 12 meters up, so 12 is one leg.
[tex]a^{2} +b^{2}=c^{2}[/tex]
[tex]a^{2}+12^{2}=13^{2}[/tex]
[tex]a^{2}+144=169[/tex]
[tex]a^{2}=25[/tex]
a = 5
Someone plz help me giving brainliest
Answer
Use the fact that 45 times 1/9 = 5. Them multiply by 8 to get the answer, 40.
Step-by-step explanation:
Can someone help me with this. Will Mark brainliest. Need answer and explanations/work. Thank you.
Answer:
cosine of angle a = 8/17
Step-by-step explanation:
Hello there!
Remember these are the trigonometric ratios
SOC CAH TOA
Sine = Opposite over Hypotenuse (SOH)
Cosine = Adjacent over Hypotenuse (CAH)
Tangent = Opposite over Adjacent (TOA)
And we are asked to find the Cosine of angle A
Remember cosine is adjacent over hypotenuse
Hypotenuse - The longest side
Adjacent - the side that's not the hypotenuse nor the opposite
The adjacent side length of angle A is equal to 8 and the hypotenuse is equal to 17
so the cosine of angle a = 8/17
Please help me with this test I’m so bad at math
Answer:
4 is 13.75 and 5 is 14.704
Step-by-step explanation:
A Ferris wheel car moves from point C to point D on the circle shown below:
Circle A is shown with points C and D on the circle and the central angle C A D marked 42 degrees. The diameter is 30 feet.
HELP NOW!! 100 POINTS!!! What is the arc length the car traveled, to the nearest hundredth?
7.91 feet
8.32 feet
10.99 feet
11.89 feet
Answer:
10.99
Step-by-step explanation:
Took the test and it said it was this one :)
The arc length of the car traveled, to the nearest hundredth is 10.99feet
The formula for calculating the length of an arc is expressed as:
L = theta/360 × 2pi r
Given that
Radius r = d/2 = 30/2 =15ft
theta = 42 degrees
pi = 3.14
Substitute the given values into the formula as shown
L = 42/360×2(3.14)(15)
L = 42/360×94.2
L = 3956.4/360
L = 10.99feet
This shows that the arc length of the car traveled, to the nearest hundredth is 10.99feet
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a chocolate company selects 800 random packages to check their weight. It finds that 12 packages have an incorrect weight. How many packages out of 4000 should the company predict to have the incorrect weight.
Answer:
1.5% of 4000 or 60
Step-by-step explanation:
PLEASE HELP!!!
NO LINKS PLEASE...
Answer:
I think that is right
Step-by-step explanation:
I hope that is useful for you :)
Use the data from the dot plot below to answer the question.
How many students from this data sample have three siblings?
A. Three students have three siblings
B. One student has three siblings
C. Four students have three siblings
D. Two students have three siblings
Each letter in the word THEORETICAL is placed on a separate piece of paper and placed in a
hat. A letter is chosen at random from the hat. What are the odds against pulling a T?
Answer:
sorry men this is not the answer
Step-by-step explanation
Let T be a linear transformation given by (v) = Av . A = [2 1 3, 1 1 0,0 1 -3] a) Basis for the kernel of T b) Basis for the range of T. c) The rank of T. d) The nullity of T.
(a) The basis for the kernel of T is {(-1, 1, 1)}. (b) The basis for the range of T is {(2, 1, 0), (1, 1, 1)}. (c) The rank of T is 2. (d) The nullity of T is 1.
(a) To find the basis for the kernel of T, we need to solve the equation T(v) = 0. This is equivalent to finding the null space of the matrix A. By performing row reduction on A, we find that the basis for the kernel is {(-1, 1, 1)}.
(b) The range of T is the set of all possible outputs of T. To find the basis for the range, we can consider the columns of A that correspond to the pivot positions after row reduction. In this case, the columns {2, 1} and {1, 1} correspond to the pivot positions, so the basis for the range is {(2, 1, 0), (1, 1, 1)}.
(c) The rank of T is the dimension of the range, which is the number of linearly independent vectors in the basis for the range. In this case, the rank of T is 2.
(d) The nullity of T is the dimension of the kernel, which is the number of linearly independent vectors in the basis for the kernel. In this case, the nullity of T is 1.
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wuestion
A restaurant customer left $1.05 as a tip. The tax was 6% and the tip was 15% of the cost including
tax.
What was the total bill?
Plz help due at 11:59
I will mark right answer brainliest
pls help .. i will mark brainliest !
Answer:
Option 2, d; corresponding
Step-by-step explanation:
since 6 and 18 are on the same line (line d) and is on the same spot, they are considerd corresponding.
1: = (3,2,4) m = + +
2: = (2,3,1) = (4,4,1)
(a) Create Vector and Parametric forms of the equations for
lines 1 and 2
In line 1, the position vector is (3, 2, 4), and the direction vector is (1, 1, 1). By varying the parameter t, we can obtain different points on the line.
In line 2, the position vector is (2, 3, 1), and the direction vector is (4, 4, 1). By varying the parameter s, we can obtain different points on this line.
The vector form and parametric form of the equations for lines 1 and 2 are as follows:
Vector form of line 1:
r = (3, 2, 4) + t(1, 1, 1)
Parametric form of line 1:
x = 3 + t
y = 2 + t
z = 4 + t
Vector form of line 2:
r = (2, 3, 1) + s(4, 4, 1)
Parametric form of line 2:
x = 2 + 4s
y = 3 + 4s
z = 1 + s
The vector form of a line represents the line in terms of a position vector r and a parameter t or s. The position vector r gives a point on the line, and the parameter t or s determines the location of other points on the line.
In line 1, the position vector is (3, 2, 4), and the direction vector is (1, 1, 1). By varying the parameter t, we can obtain different points on the line.
Similarly, in line 2, the position vector is (2, 3, 1), and the direction vector is (4, 4, 1). By varying the parameter s, we can obtain different points on this line.
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44/15 converted into a mixed number (convert a fraction into a decimal before converting it into a mixed number)
Answer:
cgal to the store with me for the wounds on the number and the kids to today because I'm so 4
PLS HELP! I'M SO STUCK!!
Answer:
E
Step-by-step explanation:
i just kinda figured it out
what is the maximum number of interior reflex angles that a hexagon can have?
Help me pleaseee!!!!!!
Answer:
8 or 9
Step-by-step explanation:
Using the Bisection Method on the interval [-1, 7], how many iterations are required to guarantee a maximum error, e = 0.01?
To guarantee a maximum error of e = 0.01 using the Bisection Method on the interval [-1, 7], approximately 8 iterations are required.
The Bisection Method is an iterative numerical method used to find the root of a continuous function within a given interval. It repeatedly bisects the interval and determines in which subinterval the root lies, based on the sign change of the function. The process continues until the desired accuracy is achieved.
In this case, the interval is [-1, 7] and the maximum error allowed is e = 0.01. The number of iterations required can be determined by finding the number of times the interval can be halved until its length becomes less than or equal to the maximum error.
Initially, the length of the interval is 7 - (-1) = 8. To achieve an error of 0.01, the interval needs to be halved 3 times. After each halving, the length of the interval is reduced by a factor of 1/2. Thus, after 3 iterations, the length becomes 8 * (1/2)^3 = 1.
Since the length of the interval is now less than the maximum error, we can conclude that approximately 8 iterations are required to guarantee a maximum error of 0.01 using the Bisection Method on the interval [-1, 7].
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to know if two figures are _______ you have to analyze they have to have the same shape but not the same size
Answer:
Similar!
Step-by-step explanation:
Hope this helps!
The table below lists the observed frequencies for all four categories for an experiment. Category Observed Frequency 1 23 2 12 3 34 4 11 The null hypothesis for the goodness-of-fit test is that 40% of all elements of the population belong to the first category, 30% belong to the second category, 20% belong to the third category, and 10% belong to the fourth category. What is the expected frequency for the fourth category? The expected frequencies for the four categories are: Category 1: i Category 2: i Category 3: i Category 4: i What are the degrees of freedom for this test? i The significance level is 10%. What is the critical value of chi-square? O 7.779 O 9.488 O 7.815 O 6.251 What is the value of the test statistic, rounded to three decimal places? i
The expected frequency for the fourth category is 8.
To calculate the expected frequency for a particular category, we multiply the total number of observations by the expected proportion for that category. In this case, we have the observed frequencies for all four categories, but we need to determine the total number of observations.
To find the total number of observations, we sum up the observed frequencies for all categories:
Total number of observations = observed frequency of category 1 + observed frequency of category 2 + observed frequency of category 3 + observed frequency of category 4
In your case, the observed frequencies are as follows:
Observed frequency of category 1 = 23
Observed frequency of category 2 = 12
Observed frequency of category 3 = 34
Observed frequency of category 4 = 11
Substituting these values into the equation, we get:
Total number of observations = 23 + 12 + 34 + 11 = 80
Now that we know the total number of observations is 80, we can calculate the expected frequency for the fourth category using the null hypothesis proportions.
Expected frequency for category 4 = Total number of observations * Expected proportion for category 4
Expected proportion for category 4 = 10% = 0.10 (based on the null hypothesis)
Substituting the values into the equation, we have:
Expected frequency for category 4 = 80 * 0.10 = 8
Therefore, the expected frequency for the fourth category, according to the null hypothesis, is 8.
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Complete Question:
The table below lists the observed frequencies for all four categories for an experiment.
Category Observed Frequency
1 23
2 12
3 34
4 11
The null hypothesis for the goodness-of-fit test is that 40% of all elements of the population belong to the first category, 30% belong to the second category, 20% belong to the third category, and 10% belong to the fourth category.
What is the expected frequency for the fourth category?
PLEASE HELP ME I NEED HELP FAST
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer C
Step-by-step explanation:
The probability of having a pet is 40%, if you knew that anyone
who has a pet visits a vet (vet means animals' doctor)
with probability =90%. Then the probability of having a pet and
visiting a vet is
The probability of both having a pet and visiting a vet is 0.36 or 36%.
To find the probability of both having a pet and visiting a vet, we multiply the probability of having a pet by the probability of visiting a vet given that the person has a pet.
Let:
P(pet) = probability of having a pet = 40% = 0.40
P(vet | pet) = probability of visiting a vet given that the person has a pet = 90% = 0.90
The probability of having a pet and visiting a vet is given by:
P(pet and vet) = P(pet) * P(vet | pet)
P(pet and vet) = 0.40 * 0.90
P(pet and vet) = 0.36
Therefore, the probability of both having a pet and visiting a vet is 0.36 or 36%.
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Which of the following numeric measures would be most likely to produce invalid statistical analysis? A) Analysis of patients' blood pressures in mmHg B) Pain rating as: none = 0; slight = 1; much = 2 C) Assessment of oxygen saturation in percentage D) Analysis of neonatal birthweight in kilograms
The most likely numeric measure to produce invalid statistical analysis would be Pain rating as: none = 0; slight = 1; much = 2.
This is because assigning numerical values to categorical data in an arbitrary manner may not accurately represent the true nature of the variable. The assigned values of 0, 1, and 2 may not reflect the actual differences in pain intensity between the categories.
Statistical analysis requires meaningful and quantitative data, and converting qualitative variables into numerical values without a clear and consistent measurement scale can lead to misleading or invalid results. Therefore, option B) would be the most likely to produce invalid statistical analysis.
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