Answer:
1000
Step-by-step explanation:
answer is 1000 miles per hour
24. Evaluate the expression for the values of b.
b
b(3) + 20.4
8.9
5.1
0.2
The expression for the values of b, when b = 8.9 is 47.1, when b = 5.1 is 35.7 and when x = 0.2 is 21
What is an expression?An expression in maths, a sentence with a minimum of two numbers or variables and at least one math operation.
Given an expression b(3) + 20.4
When b = 8.9
8.9*3 + 20.4 = 47.1
When b = 5.1
5.1*3 + 20.4 = 35.7
When b = 0.2
0.2*3 + 20.4 = 21
Hence, The expression for the values of b, when b = 8.9 is 47.1, when b = 5.1 is 35.7 and when x = 0.2 is 21
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Please help me with this
Answer:
r=10.9cm
Q=12cm
S=14.42cm
Step-by-step explanation:
Pythagoras theorem states H²=b²+h²
H-hypotenuse
B-base
h-height
E.g q 4²+3²=HE
H=√25=5
13²=b²+5²
b²=169-25
b=√144=12
Q=12cm
jorje wants to estimate the percentage of people who play sports. he surveys 330 individuals and finds that 65 play sport. find the margin of error for the confidence interval for the population proportion with a 95% confidence level.
The margin of error for the confidence interval for the population proportion with a 95% confidence level is 0.000207
How to find the margin of errorfinding the percentage of 65 of 330 individuals
65 / 330 * 100 = 19.697% = 0.19697
number of samples, n = 330
standard deviation, σ is calculated from
= √{(p(1 - p)) / n}
= √{(0.197 * (1 - 19.7)) / 330}
= √{(0.197 * (0.803)) / 330}
= 0.022
Margin of error, E
= Z(0.95) * σ/√(n)
= 0.171 * 0.022/√(330)
= 0.171 * √(0.022²/330)
= 0.000207
= 0.021%
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Calculating the Number of Periods [LO4] You expect to receive $39,000 at graduation in two years. You plan on investing it at 10 percent until you have $174,000. How long will you wait from now? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Period years
You would need to wait approximately 51.33 years from now to grow your initial investment of $39,000 to $174,000 at an interest rate of 10% per year.
To calculate the number of periods (years) required to grow an initial investment to a desired future value, we can use the formula for compound interest:
FV = PV * \((1 + r)^n\)
Where:
FV is the future value
PV is the present value (initial investment)
r is the interest rate per period
n is the number of periods
In this case:
PV = $39,000
FV = $174,000
r = 10% per year
Let's calculate the number of periods (years):
FV = PV * \((1 + r)^n\)
174,000 = 39,000 * \((1 + 0.10)^n\)
Divide both sides by 39,000:
4.4615 = \((1.10)^n\)
Take the logarithm of both sides to solve for n:
log(4.4615) = n * log(1.10)
n ≈ log(4.4615) / log(1.10)
n ≈ 2.1270 / 0.0414
n ≈ 51.33 (rounded to two decimal places)
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how do you find which ordered pair is a unit rate represented
Answer:
Step-by-step explanation:
first you determine the X and the Y value
lets start off by giving an example.
(2,6)
(X,Y)
the number on the left is always going to be the X value and the number on the right is always going to be the Y value.
X on a graph is the horizontal line and Y on the graph is the vertical line
horizontal is left to right
and vertical is up and down
if we have the ordered pair (2,6)
our X is 2
our Y is 6
(the example is in this screenshot)
A random number generator is used to create a list of 300 single-digit numbers. Of those 300 numbers, 146 are odd
and 154 are even. The number 8 was generated 22 times.
What is the experimental probability of an even number other than 8 being generated? Write your answer as a
decimal to the nearest hundredths place.
O 0.23
O 0.35
O 0.44
O 0.52
The experimental probability of an even number other than 8 being generated is, 0.44
What is mean by Probability?The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
Given that;
Total number of numbers = 300
Number of even numbers = 154
Number of eight = 22
Hence, Number of even numbers other than 8 is,
154 - 22 = 132
Thus, Probability is,
= [number of even numbers other than eight] / [total number of numbers]
= 132/300
= 0.44
Thus, The experimental probability of an even number other than 8 being generated is, 0.44
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Determine the global extreme values of the f(x,y)=11x−5y if y≥x−3,y≥−x−3,y≤11. (Use symbolic notation and fractions where needed.)
The global extreme values of the function `f(x,y) = 11x - 5y` under given conditions are:`f(x,y) = 16x + 15` (maximum)`f(x,y) = 11x - 55` (minimum).
Given function is `f(x,y)=11x−5y`We need to determine the global extreme values of the given function under the following conditions:y ≥ x - 3y ≥ -x - 3y ≤ 11Now, we need to find the critical points of the given function. For that, we'll calculate partial derivatives of the given function w.r.t x and y.`∂f/∂x = 11``∂f/∂y = -5`As we can see, the partial derivative of the function w.r.t x is positive. Therefore, the critical points of the given function would be the points where `∂f/∂y = -5 = 0`.Since there's no such point satisfying the above equation under given conditions, we can say that there's no critical point under given conditions.Now, let's evaluate the function at the boundaries given:At `y = x - 3`, `f(x,y) = 11x - 5y``= 11x - 5(x - 3)``= 6x + 15`At `y = -x - 3`, `f(x,y) = 11x - 5y``= 11x - 5(-x - 3)``= 16x + 15`At `y = 11`, `f(x,y) = 11x - 5y``= 11x - 5(11)``= 11x - 55`Now, to find the maximum value of `f(x,y)` under given conditions, we need to choose the maximum value among the above calculated values.In this case, `f(x,y)` is maximum at `y = -x - 3`, which is `16x + 15`.Therefore, the maximum value of `f(x,y)` under given conditions is `16x + 15`.Similarly, to find the minimum value of `f(x,y)` under given conditions, we need to choose the minimum value among the above calculated values.In this case, `f(x,y)` is minimum at `y = 11`, which is `11x - 55`.Therefore, the minimum value of `f(x,y)` under given conditions is `11x - 55`.Hence, the global extreme values of the function `f(x,y) = 11x - 5y` under given conditions are:`f(x,y) = 16x + 15` (maximum)`f(x,y) = 11x - 55` (minimum).
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Can anyone answer this
Answer:
B. 1395 sq. units
Step-by-step explanation:
Since the shape is an octagon, it is also composed of 8 triangles. If you solve the formula for the area of a triangle with those numbers and multiply it by the amount of sides you will have the total area.
Answer:
B. 1395 sq. units
Step-by-step explanation:
A=2(1+\(\sqrt{2}\))a²
A=2(1+\(\sqrt{2}\))17²
A=2(1+\(\sqrt{2}\))289
A≈4.83×289
A≈1395.87
A≈1395 units²
The option that fits this is B. 1395 sq. units
A committee must be formed with 5 teachers and 3 students. If there are 10 teachers
to choose from, and 13 students, how many different ways could the committee be
made?
Answer:
72,072
Step-by-step explanation:
To determine the number of different ways the committee can be formed, we need to calculate the combination of selecting 5 teachers out of 10 and 3 students out of 13.
The number of ways to choose 5 teachers out of 10 is given by the combination formula:
C(10, 5) = 10! / (5! * (10 - 5)!) = 252
Similarly, the number of ways to choose 3 students out of 13 is:
C(13, 3) = 13! / (3! * (13 - 3)!) = 286
To find the total number of ways the committee can be formed, we multiply the number of ways to choose teachers by the number of ways to choose students:
Total number of ways = 252 * 286 = 72,072
Therefore, there are 72,072 different ways the committee can be formed.
Evaluate the function. g(x) = 3x^2 – 2x + 5 Find f(2)
Answer:
13
Step-by-step explanation:
Replace X with 2
Evaluate the function. g(x) = 3x^2 – 2x + 5 Find f(2)
g(x) = 3(2)^2 – 2(2) + 5
Next conduct PEMDAS
Exponents are first so solve 2^2 which is 2 x 2 = 4
g(x) = 3(4) – 2(2) + 5
Next step is multiplication multiply 3 x 4 and 2x2
g(x) = 12 – 4 + 5
conduct adding and subtracting left from right
g(x) = 13
Please show all work and please do not use a
calculator, thank you.
3. A particle starts moving from the point (2,1,0) with velocity given by v(t) = (2t, 2t - 1,2 – 4t), where t > 0. (a) (3 points) Find the particle's position at any time t. (b) (4 points) What is t
Given that the velocity of the particle isv(t) = (2t, 2t - 1,2 – 4t), where t > 0.(a) To find the particle's position at any time t, we need to integrate the velocity function v(t).
Thus, we obtain the position function P(t) by integrating v(t) with respect to t.
The position function P(t) is given as:P(t) = ∫v(t)dt, where the integration is done from the initial time t=0 to the time t.
The position function for the given velocity function is:
P(t) = (t2 + 2, t2 - t + 1, 2t - 2t2/2) + (2, 1, 0)
= (t2 + 4, t2 - t + 2, 2 - t2).
(b) The particle's position is given by the position function
P(t) = (t2 + 4, t2 - t + 2, 2 - t2).
To find the value of t when the particle is at the origin, we set each component of P(t) to zero and solve for t.t2 + 4 = 0
⇒ t2 = - 4
[No solution since t > 0]t2 - t + 2 = 0
⇒ t2 - t
= - 2t2 + t
= 2t(t - 1)
= 2t
= - 2
[No solution since t > 0]2 - t2 = 0
⇒ t2 = 2t
= √2
The particle is never at the origin because t cannot be negative or zero.
Therefore, there is no value of t at which the particle is at the origin.
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Caven that the marginal jropensity te consume =0.75, a bit the econumy is choced without giverament, samplete the followinz table 2. What ' the equilitrime level income? b. When the preduces of increase Heir unpannd inventories? C. When the poroducess,$1 decroas Heir enplanued inventaves
a. The equilibrium level of income is zero in this scenario.
b. Increasing unplanned inventories leads to a decrease in overall production and income.
c. Decreasing unplanned inventories by $1 leads to an increase in overall production and income.
Let us discuss in a detailed way:
a. The equilibrium level of income can be determined using the marginal propensity to consume (MPC) and the concept of autonomous spending. The formula to calculate the equilibrium level of income is given by:
Equilibrium level of income = Autonomous spending / (1 - MPC)
In this case, the autonomous spending is assumed to be zero because there is no government intervention.
Therefore, the equation simplifies to:
Equilibrium level of income = 0 / (1 - 0.75) = 0 / 0.25 = 0
Hence, the equilibrium level of income in this scenario is zero.
b. When the producers increase their unplanned inventories, it suggests that actual spending is lower than the level of output being produced. This situation can lead to a decrease in overall production and income in the economy. The decrease occurs because producers respond to the unplanned increase in inventories by reducing their level of output to match the lower level of demand.
c. When the producers decrease their unplanned inventories by $1, it indicates that actual spending exceeds the level of output being produced. This situation can lead to an increase in overall production and income in the economy. The increase occurs because producers respond to the unplanned decrease in inventories by increasing their level of output to meet the higher level of demand.
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please help me im having a mental breakdown over this
Answer:I have the same thing
Step-by-step explanation:
Problems 1-5: We want to know the true proportion of students that are ok with online courses. We take a sample of 120 students, and 72 said they are ok with online courses. We want to create a 95% confidence interval. Answer the questions below:1) What is the point estimate for the population proportion?2) What is the standard error?3) What is the z score for 95% confidence?4) What is a 95% confidence interval for this data?5) What is the margin of error for this data?
Answer:
Step-by-step explanation:
ima a braintlest
A large population has mean 100 and standard deviation 16. What is the probability that the sample mean will be within plusminus 2 of the population mean if the sample size is n = 100? What is the probability that the sample mean will be within plusminus 2 of the population mean if the sample size is n = 400? What is the advantage of a larger sample size?
The probability that the sample mean will be within plus minus 2 of the population mean if the sample size is n = 100 between z-scores of 0 and 2.5 using a z-table.
The standard deviation of the sample distribution, commonly known as the standard error, can be computed using the formula given that the population mean is 100 and the standard deviation is 16:
Standard Error = Standard Deviation / sqrt(sample size)
Let's determine the likelihoods for sample sizes of n = 100 and n = 400:
For n = 100:
Standard Error = 16 / sqrt(100) = 16 / 10 = 1.6
We can determine the z-scores for the upper and lower boundaries to establish the likelihood that the sample mean will be within plus or minus 2 of the population mean:
Lower Bound z-score = (Sample Mean - Population Mean) / Standard Error
Lower Bound z-score = (100 - 100) / 1.6
Lower Bound z-score = 0
Upper Bound z-score = (Sample Mean - Population Mean) / Standard Error
Upper Bound z-score = (104 - 100) / 1.6
Upper Bound z-score = 4 / 1.6
Upper Bound z-score = 2.5
We can calculate the region under the normal distribution curve between z-scores of 0 and 2.5 using a z-table or statistical software. This shows the likelihood that the sample mean will be within +/- 2 standard deviations of the population mean.
For n = 400:
Standard Error = 16/√400
Standard Error = 16/20
Standard Error = 0.8
We determine the z-scores by following the same procedure as above:
Lower Bound z-score = (Sample Mean - Population Mean) / Standard Error
Lower Bound z-score = (100 - 100) / 0.8
Lower Bound z-score = 0
Upper Bound z-score = (Sample Mean - Population Mean) / Standard Error
Upper Bound z-score = (104 - 100) / 0.8
Upper Bound z-score = 4 / 0.8
Upper Bound z-score = 5
Once more, we may determine the region under the normal distribution curve between z-scores of 0 and 5 using a z-table or statistical software.
A larger sample size, like n = 400, has the benefit of a lower standard error. The sampling distribution of the sample mean will be more constrained and more closely resemble the population mean if the standard error is less.
As a result, there is a larger likelihood that the sample mean will be within +/- 2 of the population mean. In other words, the estimate of the population mean gets more accurate and dependable as the sample size grows.
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What is the probability of being born in May or on the 30th of any month?
Answer: 41/365
Step-by-step explanation:
The probability of being born in May is 31/365 (May has 31 days and there are 365 days in a year).
The probability of being born on the 30th of the month is 11/365 (11 months have at least 30 days). However, since we have included May 30 in our MAy probability, we need to use the probability of 10/365.
Add the two probabilities together, and the probability of being born in May or on the 30th is 31/365 + 10/365 = 41/365.
y ≥ 4
x+y> 7slove for x,y
Answer:
x=3
Step-by-step explanation:
x+4>7
7-4=3
x=3
....
A family needs to build fencing around their rectangular home and square swimming pool, depicted below.
A rectangle labeled home has its right side labeled (2 + 5 x) yards and its bottom side labeled (3 + 10 x) yards. The square, labeled pool, is smaller than the rectangle. One of its sides is labeled (2x) yards.
The total amount of fencing they need can be written as x + 10.
If x = 5;
The family needs yards of fencing for their home.
The family needs yards of fencing for their pool.
The total amount of fencing they need = 38x + 10.
Perimeter for the rectangular fencing of the home = 160 yards
Perimeter for the square fencing of the pool = 40 yards
What is the Perimeter of a Rectangle and a Square?Perimeter of a rectangle = 2(length + width)
Perimeter of a square = 4(side length).
Perimeter for the rectangular fencing of the home = 2(3 + 10x + 2 + 5x) = 2(15x + 5) = 30x + 10
Perimeter for the square fencing of the pool = 4(2x) = 8x
The total amount of fencing they need = 30x + 10 + 8x = 38x + 10.
If x = 5, then:
Perimeter for the rectangular fencing of the home = 30x + 10 = 30(5) + 10 = 160 yards
Perimeter for the square fencing of the pool = 4(2x) = 8x = 8(5) = 40 yards.
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Answer:
38
160
40
Step-by-step explanation:
How many 4-digit positive integers are there for which there are no repeated digits, or for which there may be repeated digits, but all digits are odd?
The number of ways of arranging 4-digit positive integers with no repeated digits is 4536 ways and number of ways of 4-digit positive integers with repeated digits, but all digits are odd is 625 ways.
In this question,
Positive integers are 0,1,2,3,4,5,6,7,8,9
Total number of integers = 10
This can be solved by permutation concepts.
Case 1: 4-digit positive integers with no repeated digits,
First digit, cannot be zero. So remaining 9 digits.
Second digit, can be any digit other than the first digit. So 9 digits.
Third digit, can be any digits other than first and second. So 8 digits.
Fourth digit, can be any digits other than first, second, third digit. So 7 digits.
Thus, Number of ways of 4-digit positive integers with no repeated digits ⇒ (9)(9)(8)(7)
⇒ 4536 ways.
Case 2: 4-digit positive integers, there may be repeated digits, but all digits are odd
Odd integers are 1,3,5,7,9
Number of digits = 5
In this case, we can repeat the digits. So all places can have 5 possibilities.
Thus number of ways of 4-digit positive integers with repeated digits, but all digits are odd = (5)(5)(5)(5)
⇒ 625 ways.
Hence we can conclude that the number of ways of arranging 4-digit positive integers with no repeated digits is 4536 ways and number of ways of 4-digit positive integers with repeated digits, but all digits are odd is 625 ways.
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Trapezoid JKLM is shown on the coordinate plane below:
5-5-4
M
76
bo to
CON
K
56
If trapezoid JKLM is translated according to the rule (x, y) → (x + 5, y-4), what are the coordinates of point L"?
Trapezoid JKLM is shown on the coordinate plane, the coordinates of L should be (8,-6) if the rule is (x + 5, y - 4), because the coordinates are (3, -2), and you have to add 5 to x, and -4 to y.
What is coordinate?The origin of the coordinate system is the intersection of the axes, and the first and second coordinates are known as the abscissa and the ordinate of P, respectively. The coordinates are often represented as two integers enclosed in parenthesis and placed in that particular order, all separated by commas. Coordinates are two integers (Cartesian coordinates) or, in certain cases, a letter and a number that point to a specific place on a grid known as a coordinate plane. The x axis (horizontal) and y axis are the two axes of a coordinate plane, which contains four quadrants (vertical).
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The complete question is as follows:
F(x) = 5x + 6 evaluate f(-7)
\(\huge\text{Hey there!}\)
\(\mathsf{f(x) = 5x + 6}\\\mathsf{f(x) = 5(-7) + 6}\\\mathsf{f(x) = -35 + 6}\\\mathsf{f(x) = -29}\\\\\\\huge\text{Therefore your answer should be:}\\\huge\boxed{\mathsf{f(x) = -29}}\huge\checkmark\)
\(\huge\text{Good luck on your assignment \& enjoy your day!}\)
8(x - 2) - 4 = 28
What does x equal
Answer:
6
Step-by-step explanation:
first, we multiply the 8(x - 2)
8 times x = 8x
8 times - 2 = -16
8x - 16 - 4 = 28
-16 - 4 = -20
8x -20 = 28
add 20 to both sides
48
8x = 48
divide
6
Answer:
x=6
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.(Can you give me brainliest?)
Jod Joe are playing a game scored with complex numbers. Jodi has a score of 5 − 3i and Joe has a score of 4 + 2i. Question 1 What is the combined score for Jodi and Joe?
The combined score for Jodi and Joe is 9-i
How to find the combined score for Jodi and Joe?Two complex numbers, z₁ = a + bi and z₂ =c +di, can be added by adding the corresponding real and imaginary parts. That is:
z₁+z₂ = (a+c) + (b+d)i
Given: Jodi's score = 5−3i and Joe's score = 4 + 2i
Combined score = 5−3i + 4 + 2i
= (5+4) + (-3+2)i
= 9-i
Therefore, the combined score is 9-i
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PLEASE HELP ME IM SO CONFUSED AND THIS IS DUE IN 10 MINS!!! PLEASE HELP!!!
Answer:
The answer is 98304
Step-by-step explanation:
The state of Colorado covers about 1.04 * 105 square miles. The Indian Ocean covers about 2.808 * 107 square miles. How many times bigger than Colorado is the Indian Ocean?
Answer:
270 times
Step-by-step explanation:
The number of times Indian Ocean is bigger than Colorado = 28,080,000 ÷ 104,000 = 270 times.
3
Andrew plays a card game. In the first round, he gets 4 points.
In the second round, he loses 4 points. The expression 4 +(-4)
represents his score after the two rounds.
-
+
a. Circle the zero pairs in the model.
b. How many points does Andrew have after the second round?
c. What is 4 + (-4)?
Answer:
A) The 4 and (-4) are 0s.
B) 0 points after the second round
C) 4+(-4) is 0
The 4 and the (-4) are the zero pairs in the model
Andrew has 4 + (-4) = 0 points after the second round.
4 + (-4) = 0
Slove. 2 + 6x = 1 - x and 5y + 4 = 4y + 5
Answer: x = -1/7, y = 1
Step-by-step explanation: 2 + 6x = 1 - x, first to isolate x we add x to both sides giving us 2 + 7x = 1. Then, subtract two from both sides giving us 7x = -1. Finally divide by 7 to both sides give x = -1/7.
5y + 4 = 4y + 5, first to isolate the variable subtract 4y from both sides giving us y + 4 = 5. Then, subtract 4 from both sides giving us y = 1.
Write True and false
A test statistic based on point estimation is used to construct the decision rule which defines the rejection region.
A p-value is the highest level (of significance) at which the observed value of the test statistic is insignificant.
we prefer a short interval with a high degree of confidence.
Prediction interval(P.I) is always narrower than confidence interval (C.I) because there is less uncertainty in predicting an actual observation than estimating the average.
Sample is a subset of observation from a population. These should be representative of the population.
An estimate is a random variable of an estimator
True: A test statistic based on point estimation is used to construct the decision rule which defines the rejection region.
False: A p-value is the highest level (of significance) at which the observed value of the test statistic is insignificant. (A p-value is the lowest level of significance at which we can reject the null hypothesis.)
True: We prefer a short interval with a high degree of confidence.
False: Prediction interval (P.I) is always narrower than confidence interval (C.I) because there is less uncertainty in predicting an actual observation than estimating the average. (Prediction intervals are generally wider than confidence intervals due to the additional uncertainty in predicting individual observations.)
True: Sample is a subset of observation from a population. These should be representative of the population.
False: An estimate is a random variable of an estimator. (An estimator is a function of a random variable, while an estimate is a realization or observed value of that estimator.)
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Y=4x-1 in function notation ????
Answer:
f(x) = 4x - 1
Step-by-step explanation:
The answer to this question is f(x) = 4x - 1 because function notation displays the values of how the input of x yields the output of y. This means that in this form, y is changed to the x input where the substitution of the x in the equation yields the new y.
Joshua find the perimeter of the following composite figure composed of a square and right triangle so that a braid may be cut to install around its outer edge. determine what is wrong with his calculations and how to find the correct length
Answer:
I'm not really sure man :P