Answer:
3x-5 y=2
is graphed below.
- Please help this is a Rational Inequality problem
1. A ball is thrown straight up from the top of a tower that is 280 ft high with an initial velocity of 48 ft/s. The height of the object can be modeled by the equation s(t) = -16t^2 + 48t + 280. (solve step by step pls)
2. In a complete sentence explain how to determine the time(s) the ball is lower than the building in interval notation.
The time that the ball is lower than the building in interval notation is 3 seconds.
How to illustrate the information?It should be noted that from the information, the ball is thrown straight up from the top of a tower that is 280 ft high with an initial velocity of 48 ft/s and the height of the object can be modeled by the equation s(t) = -16t² + 48t + 280.
It should be noted that the height is illustrated as 280 ft.
Therefore, the time that the ball is lower than the building will be:
-16t² + 48t + 280 - 280 = 0
-16t² + 48t = 0
-16t² = -48t
t = -48t / -16t
t = 3 seconds
Therefore, the time that the ball is lower than the building in interval notation is 3 seconds.
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^^ this is the last oneeee
Answer:
30 degrees
Step-by-step explanation:
So a complete circle consists of 360 degrees but we are trying to find what ADB equals so we are going to subtract BDC and ADC from 360:
BDC = 150
The graph does not say what ADC equals so we are going to look at the graph and see that ADC is half of the circle so we are going to divide 360 by 2:
360/2 = 180
So ADC equals 180, since we know what ADC and BDC equal we are going to add them together and then subtract them from 360:
180 + 150 = 330
360 - 330 = 30
So ADB = 30 degrees
Hope this helps!
Two number cubes, one red and one blue, are rolled. What is the probability that the outcome of the red number cube is even and the outcome of the blue number cube is a 5
Answer: The probability is 0.083
Step-by-step explanation:
First, let's find the individual probabilities:
The probability that the outcome of the red number cube is even:
This will be equal to the quotient between the number of outcomes that are even (3) and the total number of outcomes for this dice (6)
Then the probability is:
p = 3/6 = 1/2.
The probability that the outcome of the blue number cube is a 5.
Similar to the above case, here the probability will be the quotient between the number of outcomes that are 5 (only one) and the total number of outcomes.
q = 1/6
And the joint probability will be equal to the product of the individual probabilities, then he probability that the outcome of the red number cube is even and the outcome of the blue number cube is a 5 is equal to:
P = p*q = (1/2)*(1/6) = 1/12 = 0.083
Question 5 of 10
Which pair of functions are inverses of each other?
O A. f(x) = 2 + 15 and g(x) = 12x - 15
O B. f(x) = √3x and g(x) = () ³
O c. f(x) = 3 - 10 and g(x) = +10
3
D. f(x) = 11x-4 and g(x) = +4
The correct answer is D. f(x) = 11x - 4 and g(x) = (x + 4)/11
To determine which pair of functions are inverses of each other, we need to check if the composition of the functions results in the identity function, which is f(g(x)) = x and g(f(x)) = x.
Let's test each option:
Option A:
f(x) = x/2 + 15
g(x) = 12x - 15
f(g(x)) = (12x - 15)/2 + 15 = 6x - 7.5 + 15 = 6x + 7.5 ≠ x
g(f(x)) = 12(x/2 + 15) - 15 = 6x + 180 - 15 = 6x + 165 ≠ x
Option B:
f(x) = ∛3x
g(x) = (x/3)^3 = x^3/27
f(g(x)) = ∛3(x^3/27) = ∛(x^3/9) = x/∛9 ≠ x
g(f(x)) = (∛3x/3)^3 = (x/3)^3 = x^3/27 = x/27 ≠ x
Option C:
f(x) = 3/x - 10
g(x) = (x + 10)/3
f(g(x)) = 3/((x + 10)/3) - 10 = 9/(x + 10) - 10 = 9/(x + 10) - 10(x + 10)/(x + 10) = (9 - 10(x + 10))/(x + 10) ≠ x
g(f(x)) = (3/x - 10 + 10)/3 = 3/x ≠ x
Option D:
f(x) = 11x - 4
g(x) = (x + 4)/11
f(g(x)) = 11((x + 4)/11) - 4 = x + 4 - 4 = x ≠ x
g(f(x)) = ((11x - 4) + 4)/11 = 11x/11 = x
Based on the calculations, only Option D, where f(x) = 11x - 4 and g(x) = (x + 4)/11, satisfies the condition for being inverses of each other. Therefore, the correct answer is:
D. f(x) = 11x - 4 and g(x) = (x + 4)/11
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I need some help with this monomial....
15a^16b^11/(3a^4b^2)^3
Answer:
\(\frac{5a^4b^5}{9}\)
Step-by-step explanation:
\(\frac{15a^1^6b^1^1}{(3a^4b^2)^3}\)
\(=\frac{15a^1^6b^1^1}{27a^1^2b^6}\)
\(=\frac{15a^4b^5}{27}\)
\(=\frac{5a^4b^5}{9}\)
Answer = \(=\frac{5a^4b^5}{9}\)
What is the mean of the data 25, 27, 24, 26, 40 and what is the median
Answer:
mean is = 28.4
median is = 26
Step-by-step explanation:
mean- average
( 25+ 27+ 24+ 26+ 40 )/5 = 28.4
median- middle
25, 27, 24, 26, 40
{ rearrange }
24, 25, 26, 27, 40
the middle number is 26
express the absolute value f(x)=6|x| function as a piecewise-defined function.
The absolute value f(x)=6|x| function as a piecewise-defined function is:
f(x) = { 6x, if x ≥ 0
{ -6x, if x < 0
How to express an absolute value function as a piecewise-defined function?A piecewise-defined function is a function that is defined by multiple sub-functions, each of which applies to a certain range of the input (or domain) values.
Each sub-function is defined by a separate piece of the overall function, and together they define the entire domain of the function. The sub-functions are typically separated by breakpoints, which are values of the input variable at which the sub-functions change.
|x| can either be -x or x. Thus, the absolute value function f(x) = 6|x| can be written as:
f(x)= 6x or f(x)= -6x
Therefore, the piecewise-defined function of f(x) = 6|x| will be:
f(x) = { 6x, if x ≥ 0
{ -6x, if x < 0
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Suppose you are investigating the relationship between two variables, traffic flow and expected lead content, where traffic flow is a predictor of lead content. You find the 95% CI for expected lead content when traffic flow is 15, based on a sample of n 10 observations, is (461.7, 598.1) What parameter is this interval estimating? O ? the average change in lead content with a change in traffic flow. ?Lead Content!Traffic flow = 15 the average lead content when traffic flow is 15. O ?Lead Content the average lead content. calculate a CI with confidence level 99% for expected lead content when traffic flow is 15" (Round your answers to one decimal place.) X430.7 629.1
The interval (461.7, 598.1) is estimating the parameter of expected lead content when traffic flow is 15, denoted as Lead Content|Traffic flow = 15. This interval represents the range of values where we can be 95% confident that the true population parameter lies, based on the sample data collected.
To calculate a 99% confidence interval for Lead Content|Traffic flow = 15, we would need to use the same sample data and formula as for the 95% confidence interval but using a higher level of significance. Assuming the underlying assumptions of normality, independence, and constant variance are met, a 99% confidence interval would be wider than the 95% interval. Therefore, we would expect the 99% confidence interval for Lead Content|Traffic flow = 15 to be (430.7, 629.1), which represents a larger range of values where we can be more confident that the true population parameter lies.
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FAST PLEASE❗️❗️❗️❗️‼️
the GCF of 44 and 20
The probability of a Type II error is represented by ____. alpha beta the Type I error sigma The null hypothesis is rejected when the p-value exceeds the level of significance True False
The probability of a Type II error is represented by beta. Thus, the correct answer is option B.
Beta represents the probability of failing to reject the null hypothesis when it is false.
On the other hand, Type I error (alpha) represents the probability of rejecting the null hypothesis when it is true. A Type II error occurs when a false null hypothesis is not rejected. Hence, beta is the probability of making a Type II error.
The null hypothesis is rejected when the p-value is less than or equal to the level of significance, not exceeds it.
The p-value is the probability of obtaining a result as extreme as or more extreme than the observed result when the null hypothesis is true. If the p-value is less than the level of significance, the null hypothesis is rejected, and vice versa.
Hence, the statement "The null hypothesis is rejected when the p-value exceeds the level of significance" is false.
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The last four years of stock returns are as follows: Year 1 is -4% Year 2 is +28% Year 3 is +12% Year 4 is + 4% (a). What is the average annual return?
Answer:
The Average annual return is:
= 10%.
Step-by-step explanation:
a) Data and Calculations:
Year Stock Returns
Year 1 -4%
Year 2 +28%
Year 3 +12%
Year 4 + 4%
Total returns = 40%
Average annual returns = 10% (40%/4)
b) The average annual return is computed as the total returns for the four years divided by 4. It shows that on the average, the return earned per year from the stock investment is 10%, during the four-year period. It is the mean of the total returns.
simplify
the square root of 5 times 3 to the square root of 5
a= 5 and 5/6
b= 5 and 1/6
c= 5 and 2/3
d=5 and 7/6
Answer:
Step-by-step explanation:
C
A coat costs $47. George has enough money to pay the exact price without using coins. If George has just one $20 bill and no $2 bills, what is the smallest total number of bills he could have?
Answer:
The smallest number of bills he could have is 5 bills.
Step-by-step explanation:
He could have two 20's, one 5, and two 1's. 20+20+5+1+1=47
Hope this helped :)
Answer:
5 bills.
Step-by-step explanation:
Smallest number of bills he can have is 5.
$20+$20+$5+$1+$1=$47
Hola por favor lo necesito
Answer:
sorry I can't understand hahahhaha
Step-by-step explanation:
Speak korean po
In the basic EOQ model, if Demand = 6,000 units per
year, ordering cost is $100 and holding cost is $5 per unit, the
economic order quantity is approximately
The economic order quantity (EOQ) is a formula used in inventory management to determine the optimal order quantity that minimizes the total cost of inventory. The formula for EOQ is: EOQ = √((2 * Demand * Ordering Cost) / Holding Cost) In this case, the demand is 6,000 units per year, the ordering cost is $100, and the holding cost is $5 per unit.
Plugging in these values into the formula, we get:
EOQ = √((2 * 6000 * 100) / 5)
Simplifying the expression inside the square root:
EOQ = √(2 * 6000 * 100 / 5)
Calculating the numerator:
EOQ = √(1,200,000)
Taking the square root:
EOQ ≈ 1,095.45
Therefore, the economic order quantity (EOQ) is approximately 1,095 units.
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0 0.1 1 0.05 2 0.3 3 0.55 find the mean of this probability distribution. round your answer to one decimal plac
The mean of the given probability distribution is 1.3 (rounded to one decimal place).
To find the mean of a probability distribution, we need to multiply each value by its corresponding probability, and then add up all the products. So, using the given values, we can calculate the mean as:
Mean = (0 x 0.1) + (0.1 x 0.05) + (1 x 0.3) + (2 x 0.55) = 1.25
Therefore, the mean of the given probability distribution is 1.3 (rounded to one decimal place).
To find the mean of a probability distribution, we need to multiply each value by its corresponding probability, and then add up all the products. In this case, the given values are 0, 0.1, 1, 0.05, 2, and 0.3, with their respective probabilities. We can calculate the mean by multiplying each value with its probability and then adding up the products. After the calculation, we get the mean as 1.25. Thus, the mean of the given probability distribution is 1.3 (rounded to one decimal place).
The mean of the probability distribution given as 0, 0.1, 1, 0.05, 2, and 0.3 is 1.3 (rounded to one decimal place). This means that on average, the value of the distribution is around 1.3. The mean is a useful measure of central tendency that helps us understand the characteristics of the probability distribution.
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ANSWER ASAP!!!
What are the coordinates of the point in Quadrant
IV on the coordinate plane??
a. (4,1)
b. (1,4)
c. (—4,5)
d. 5, —4)
Answer:
c
Step-by-step explanation:
got it right on edjenuity
Questions are from: Gerald and Wheatly, Applied Numerical Analysis 1) 10. A sky diver jumps from a plane, and during the time before the parachute opens, the air resistance is propor- tional to the power of the diver's velocity. If it is known that the maximum rate of fall under these condi- tions is 80 mph, determine the diver's velocity during the first 2 sec of fall using the modified Euler method with Ar= 0.2. Neglect horizontal drift and assume an initial velocity of zero.
The diver's velocity during the first 2 sec of fall using the modified Euler method with Ar= 0.2 is 62.732 mph.
Given data: Initial velocity, u = 0 ft/sec
Acceleration, a = g = 32.2 ft/sec²
The maximum rate of fall, vmax = 80 mph
Time, t = 2 seconds
Air resistance constant, Ar = 0.2
We are supposed to determine the sky diver's velocity during the first 2 seconds of fall using the modified Euler method.
The governing equation for the velocity of the skydiver is given by the following:
ma = -m * g + k * v²
where, m = mass of the skydive
r, g = acceleration due to gravity, k = air resistance constant, and v = velocity of the skydiver.
The equation can be written as,
v' = -g + (k / m) * v²
Here, v' = dv/dt = acceleration
Hence, the modified Euler's formula for the velocity can be written as
v1 = v0 + h * v'0.5 * (v'0 + v'1)
where, v0 = 0 ft/sec, h = 2 sec, and v'0 = -g + (k / m) * v0² = -g = -32.2 ft/sec²
As the initial velocity of the skydiver is zero, we can write
v1 = 0 + 2 * (-32.2 + (0.2 / 68.956) * 0²)0.5 * (-32.2 + (-32.2 + (0.2 / 68.956) * 0.5² * (-32.2 + (-32.2 + (0.2 / 68.956) * 0²)))
v1 = 62.732 mph
Therefore, the skydiver's velocity during the first 2 seconds of fall using the modified Euler method with Ar= 0.2 is 62.732 mph.
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A toothbrush sells for $1.75, but the actually cost of materials for the toothbrush is $0.65. If the operating cost of
the factory and paying the workers is $5800 per day, what is the least amount of toothbrushes the company must sell
per day?
Answer:
X>5273
Step-by-step explanation:
I did the math cuz I needed the answer and got it right so hope I could help.
A rotating lawn sprinkler sprays water in a circular area of grass, as shown in the picture. The diameter of the circular area of grass is 16 ft.
Answer: G) 50.24
Step-by-step explanation: you have to find the circumference of the circle. Since you already have the diameter which is 16 all you have to do is multiply that by 3.14. If you only had the radius then you will have to multiple the radius times 2 times 3.14. The formulas for circumference are: pi(3.14) x diameter or pi(3.14) x radius x 2
If y varies directly with x and y=-16 when x=8, find y when x=2
Answer:
y=-4
Step-by-step explanation:
The answer is going to be -4 as when y=-16 x=8.
if x = 1 and y = 1
Then the value of x-y + xy is
Answer:
xy together mean x times y which equals 1
x-y = 0
the the sum is 1
Step-by-step explanation:
1-1 + 1(1)
= 1
i kinda don’t get this
Answer:
angle 6 is 30 degrees
Step-by-step explanation:
its because 180/6 = 30
and 30 x 5 = 150 and 150 + 30 =180
hope this helps
make a table of values and for the function y=4x
-16, -12,0,12,16
1) Since we have the x values for y=4x a direct variation, then the y:
x | y = 4x
-4 4(-4)= -16
-3 4(-3) =-12
0 4 (0) = 0
3 4(3) = 12
4 4(4) =16
2) So these are the values. All we have to do is to plug into that
the fox population in a certain region has an annual growth rate of 8 percent per year. it is estimated that the population in the year 2000 was 7600. (a) find a function that models the population t years after 2000 ( t
the fox population in a certain region has an annual growth rate of 8 percent per year. it is estimated that the population in the year 2000 was 7600.
(a) function model for the t year after 2000 (exponential model):
\(p(t) = 7600 (1.08)^t\)
What is function?The function is a mathematical phrase, rule, or law that establishes the connection between an independent variable and a dependent variable (the another variable).
A function is described as a relationship between a group of inputs and one output each. A function is, to put it simply, a connection between inputs in which each input is connected to exactly one output.
Population in 2000,
P(0) = 7600
Growth rate = 8% each year
(a) function model for the t year after 2000 (exponential model):
\(p(t) = 7600 (1.08)^t\)
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1. A ladder is propped up against a wall, and begins to slide down. When the top of the ladder is 15 feet off the ground, the base is 8 feet away from the wall and moving at 0.5 feet per second. How far it s?
The top of the ladder is moving at a rate of 15.5 feet per second.
To find the rate at which the top of the ladder is moving, we can use related rates and the Pythagorean theorem.
Let's denote the height of the ladder as "h" (which is given as 15 feet), the distance of the base from the wall as "x" (which is given as 8 feet), and the rate at which the base is moving as "dx/dt" (which is given as 0.5 feet per second). We need to find the rate at which the top of the ladder is moving, which we'll call "dy/dt."
According to the Pythagorean theorem, we have:
x² + h² = l²
Differentiating both sides of this equation with respect to time (t), we get:
2x(dx/dt) + 2h(dh/dt) = 2l(dl/dt)
Since dx/dt and dl/dt are given, we can substitute their values:
2(8)(0.5) + 2(15)(dh/dt) = 2(unknown value of dy/dt)
Simplifying this equation, we have:
16 + 30(dh/dt) = 2(dy/dt)
Now we can solve for dy/dt in the equation:
dy/dt = (16 + 30(dh/dt)) / 2
Plugging in the given values:
dy/dt = (16 + 30(0.5)) / 2
dy/dt = (16 + 15) / 2
dy/dt = 31 / 2
dy/dt = 15.5 feet per second
Therefore, the top of the ladder is moving at a rate of 15.5 feet per second.
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In a math class with 25 students, a test was given the same day that an assignment was due. There were 15 students who passed the test and 20 students who completed the assignment. There were 13 students who passed the test and also completed the assignment. What is the probability that a student passed the test given that they did not complete the homework?
Answer:
40%
Step-by-step explanation:
20-15 = 5, 2 students passed and did the assignment, 0.4 = 40%
Select all equations that have no solution.
9 + 24x - 8x= 4 + 16x
5 + 20x = 5 + 30X - 10x
14x - (7x + 5) = 7x + 2
18x - 5 - 9x = 9x - 5
Answer: 9 + 24x - 8x= 4 + 16x
14x - (7x + 5) = 7x +
Step-by-step explanation: 9 + 24x - 8x= 4 + 16x
Step 1: Simplify both sides of the equation.
9+24x−8x=4+16x
9+24x+−8x=4+16x
(24x+−8x)+(9)=16x+4(Combine Like Terms)
16x+9=16x+4
16x+9=16x+4
Step 2: Subtract 16x from both sides.
16x+9−16x=16x+4−16x
9=4
Step 3: Subtract 9 from both sides.
9−9=4−9
0=−5
Answer:
There are no solutions.
What might you expect to happen if you first observed this constellation at 8:00pm tonight, then again at at 11:00pm?
Answer:
observe another one at 2:00pm