The domain and range of the function f(x) =a^x, then option (c) Domain = positive real numbers, range = positive real numbers.
The function f(x) = a^x is an exponential function with a base of a, where a is a positive real number. The domain of the function is all real numbers, because we can raise a positive number to any real power.
However, since a is positive, a^x will always be positive, which means that the range of the function is also positive real numbers. Therefore, the correct option is c. Domain = positive real numbers, range = positive real numbers.
Therefore, the correct option is (c) Domain = positive real numbers, range = positive real numbers.
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what are the zeros of the function using factoring in f(x)=-x^2+8x-15
Answer: 0000
Step-by-step explanation:
What is the value of x? X = X-38° O X X-33°
Answer:
Step-by-step explanation:
. An Estate dealer sells houses and makes a commission of GHc3750 for the first house sold. He receives GHc500 increase in commission for each additional house sold. How many houses must she sell to reach a total commission of GHc6500?
Answer: Let's denote the number of additional houses sold after the first one as "x".
Since the commission for the first house sold is GHc3750, the commission for selling x additional houses is GHc500x.
Therefore, the total commission earned by selling x additional houses is:
GHc3750 + GHc500x
We want to find the value of x that makes the total commission equal to GHc6500. Setting up an equation and solving for x, we get:
GHc3750 + GHc500x = GHc6500
GHc500x = GHc2750
x = 5.5
Since we can't sell half of a house, we round up to the nearest whole number. Therefore, the estate dealer must sell a total of 6 houses (including the first one) to reach a total commission of GHc6500.
Step-by-step explanation:
*CORRECT AND FASTEST ANSWER GETS BRAINLIEST!!!*
A greengrocer buys fruit and vegetables from the market and sells them at a 25% mark up. On one particular moring her fruit and vegetables cost her €500. If she sells all of her produce, find:
A) her profit
B) her total income
Answer: Below :)
Step-by-step explanation:
A) To find the profit, we first need to calculate the cost of the produce plus the 25% markup.
The markup is 25% of the cost, which is 0.25 * 500 = €125.
So the total cost of the produce plus markup is €500 + €125 = €625.
Now, if the greengrocer sells all the produce, the total revenue will be 100% plus the 25% markup, which is 125% of the original cost.
125% of €500 is 1.25 * 500 = €625, which is the same as the cost plus markup.
Therefore, the profit is the markup, which is €125.
B) To find the total income, we add the profit to the total cost:
Total income = €500 + €125 = €625
Answer:
A) €125
B) €625
3. A double coconut can grow for 10 years and have a mass of 20. 0 kg. If a 20. 0 kg double coconut oscillates on a spring 42. 7 times each minutewhat is the spring constant of the spring?
If a 20. 0 kg double coconut oscillates on a spring 42. 7 times each minute, then the spring constant of the spring is 689 N/m.
The spring constant, also known as the force constant or stiffness, is a measure of the elasticity of a spring or any other elastic object. It is defined as the force required to stretch or compress a spring by a unit distance.
The period of oscillation of the coconut can be calculated as:
[tex]T = \frac{60}{42.7} = 1.405[/tex] seconds
The mass of the coconut is 20.0 kg, so we can use the formula for the period of oscillation of a mass on a spring:
[tex]T=2\pi \sqrt{\frac{m}{k}}[/tex]
where m is the mass of the coconut and k is the spring constant.
Rearranging this formula gives:
[tex]k = (2\pi)^2 *(\frac{m}{T})^2[/tex]
Substituting the values we have:
[tex]k = (2\pi)^2 *(\frac{20.0}{1.405})^2[/tex]
k = 689 N/m (to three significant figures)
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MAthematics pls help
Answer:
x = 4
Step-by-step explanation:
6x + 21 = 5x + 25
Then, subtract 5x from both sides:
x + 21 = 25
Then, subtract 21 from both sides.
x = 4
Therefore, x is equal to 4 degrees
Write an equation for the line on the graph below.
Pleaseee Helppp I'm sick and my brain cells are dying.
Answer: y = 4, hope you feel better
Step-by-step explanation:
If the GM between √2 and 2√2 is a find the value of a.
Answer:
If the GM between √2 and 2√2 is a find the value of a.
Step-by-step explanation:
To find the geometric mean between two numbers, we simply take the square root of their product.
In this case, we want to find the geometric mean between √2 and 2√2.
Their product is:
√2 * 2√2 = 2√4 = 2*2 = 4
So, the geometric mean between √2 and 2√2 is the square root of 4, which is:
√4 = 2
Therefore, the value of a is 2.
Fill in the blank A ____ is a graph of points (x,y) where each x-value is from the original set of sample data, and each y-value is the corresponding Z-score that is a quantile value expected from the standard normal distribution
answer options are
histogram
frequency polygon
scatterplot
normal quantile plot
Normal quantile plot is a graph of points (x,y) where each x-value is from the original set of sample data, and each y-value is the corresponding Z-score that is a quantile value expected from the standard normal distribution.
What is a Normal Quantile Plot?
A normal quantile plot is a graphical tool used to determine whether a data set is normally distributed or not.
It plots sample data versus a theoretical normal distribution.
In general, the points on the plot should form a straight line if the data is normally distributed. If the data is not normally distributed, the points on the plot will not form a straight line.
A normal quantile plot can be used to evaluate the following:
Whether or not a data set is normally distributedA data set's skewnessA data set's outliersA data set's center and spread whether or not a transformation is required to make a data set normally distributed.The normal quantile plot of the residuals is the most important diagnostic tool for examining whether the assumptions of a linear regression model have been met.
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Determine if the lower bound theorem identifies -2 as a lower bound for the real zeros of f(x). 56)=x +17x² +11x+23 Part: 0/2 Part 1 of 2 (a) The upper bound theorem (Choose one) 3 as an upper bound for the real zeros of (x). X
The answer is the lower bound theorem identifies -2 as a lower bound for the real zeros of f(x). The upper bound theorem does not specify any upper bound for the real zeros of (x)
The Lower bound theorem states that "If the terms of a polynomial are arranged in descending order of their degrees, then the absolute value of the quotient of the constant term and the coefficient of the term of the highest degree gives a lower bound for the absolute value of its zeros." Let's examine whether the lower bound theorem identifies -2 as a lower bound for the real zeros of f(x) and whether 3 is an upper bound for the real zeros of (x).
As f(x) = 56 = x + 17x² + 11x + 23Since f(x) is not arranged in descending order of their degrees, we have to rearrange it as follows. 17x² + 11x + x + 23 + 56 = 17x² + 12x + 79 on rearranging the equation we have: 17x² + 12x + 79 = 0Hence the constant term is 79 and the coefficient of the term of the highest degree is 17. Thus, using the lower bound theorem, we can evaluate that a lower bound for the absolute value of the zeros of the polynomial is 79/17 ≈ 4.65 Since -2 is less than the calculated lower bound of 4.65, it is indeed a lower bound for the real zeros of f(x). Now, for (x), the constant term is 0, and the coefficient of the term of the highest degree is 1. Thus, using the upper bound theorem, we can evaluate that an upper bound for the absolute value of the zeros of the polynomial is 1/0, which is equal to infinity. Since infinity is not a number, 3 cannot be an upper bound for the real zeros of (x).
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A student takes a multiple-choice test that has 10 questions. Each question has four choices. The student guesses randomly at each answer. Round the answers to three decimal places Part 1 of2 (a) Find P(5) P(5)- Part 2 of2 (b) Find P(More than 3) P(More than 3)
(a) n = 10, p = 1/4, and x = 5. Using the formula of binomial probability function,P(5) = 10C5 * (1/4)^5 * (3/4)^5≈ 0.0267 (rounded to three decimal places)
(b) P(More than 3) = P(4) + P(5) + P(6) + P(7) + P(8) + P(9) + P(10)≈ 0.2784 (rounded to three decimal places)
Here n = 10, p = 1/4, and x = 5.Using the formula of binomial probability function,P(5) = 10C5 * (1/4)^5 * (3/4)^5≈ 0.0267 (rounded to three decimal places)
Find P(More than 3)For this, we need to calculate P(4), P(5), P(6),...,P(10) and add them.Using the formula of binomial probability function,P(4) = 10C4 * (1/4)^4 * (3/4)^6 = 0.2503 (rounded to three decimal places)P(5) = 10C5 * (1/4)^5 * (3/4)^5≈ 0.0267 (rounded to three decimal places)P(6) = 10C6 * (1/4)^6 * (3/4)^4≈ 0.0014 (rounded to three decimal places)P(7) = 10C7 * (1/4)^7 * (3/4)^3≈ 0.0001 (rounded to three decimal places)P(8) = 10C8 * (1/4)^8 * (3/4)^2≈ 0.0000 (rounded to three decimal places)P(9) = 10C9 * (1/4)^9 * (3/4)^1≈ 0.0000 (rounded to three decimal places)P(10) = 10C10 * (1/4)^10 * (3/4)^0≈ 0.0000 (rounded to three decimal places)P(More than 3) = P(4) + P(5) + P(6) + P(7) + P(8) + P(9) + P(10)≈ 0.2784 (rounded to three decimal places)
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Marcus bought a booklet of tickets to use at the amusement park. He used 25% of the tickets on rides, 1 2 of the tickets on video games, and the rest of the tickets in the batting cage. Marcus says he used 23% of the tickets in the batting cage. Do you agree? Complete the explanation.
Answer: Do not agree.
Step-by-step explanation:
To determine if we agree with Marcus, we need to verify if the percentages he used on rides, video games, and batting cage add up to 100%.
Marcus used 25% of the tickets on rides and 1/2 on video games. So, the total percentage of tickets he used is:
25% + 1/2 × 100% = 25% + 50% = 75%
This means that Marcus should have used 25% of the tickets in the batting cage. If he said he used 23% of the tickets in the batting cage, then we do not agree with him.
two groups of rats were trained to navigate a runway for food. one group earned a single food pellet, the other received three pellets. what will happen when they are both shifted to a situation in which they earn the alternative reward
When both groups are shifted to a situation in which they earn an alternative reward after being trained to navigate a runway for food, the group that received three food pellets will continue to perform the task at a high level while the group that received one food pellet will experience difficulty.
It is known that rats have a natural preference for higher rewards. As a result, the group that received three pellets will be more motivated to complete the task since they have already tasted a higher reward. Therefore, they will continue to perform at a high level in the new environment.
On the other hand, the group that received only one pellet may find it challenging to adapt to the new situation since they are now receiving a lower reward. As a result, they may struggle to complete the task, and their performance may decrease.
In conclusion, the group that received three pellets will perform better than the group that received one pellet when both groups are shifted to a situation in which they earn an alternative reward. This is because the rats have a natural preference for higher rewards.
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Solve the inequality and write the solution in set-builder notation. b+2≥ 4
Answer:
B ≥ 2
Step-by-step explanation:
b + 2 ≥ 4
b ≥ 4 - 2
b ≥ 2
Hope this helps <3
What are the key features of the graphs of the trigonometric functions?
Select all correct trigonometric functions.The function's period is 2π.
f(x)=sinx
f(x)=cosx
The function's asymptotes are πunits apart.
f(x)=tanx
The function has a maximum value of 1.
f(x)=sinx
f(x)=cosx
The function's period is 2π: f(x)=sinx , f(x)=cosx.
The function has a maximum value of 1: f(x)=sinx
The function's asymptotes are π units apart: f(x)=tanx.
The function's period is 2π:
The period of a trigonometric function is the distance between two consecutive repetitions of its pattern.
For the functions f(x) = sin(x) and f(x) = cos(x), the period is indeed 2π. This means that the graph of these functions repeats its pattern every 2π units along the x-axis.
The function has a maximum value of 1:
The function f(x) = sin(x) has a maximum value of 1.
As you go through the sine wave, it reaches its highest point at 1 and then starts decreasing.
The function's asymptotes are π units apart:
An asymptote is a line that a graph approaches but never quite reaches. The function f(x) = tan(x) has vertical asymptotes that are π units apart.
These asymptotes occur at regular intervals along the x-axis, specifically at x = π/2, x = 3π/2, x = 5π/2, and so on.
The tangent function has a repeating pattern of asymptotes separated by π units.
Hence, The function's period is 2π: f(x)=sinx , f(x)=cosx.
The function has a maximum value of 1: f(x)=sinx
The function's asymptotes are π units apart: f(x)=tanx.
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Complete question:
What are the key features of the graphs of the trigonometric functions?
Select all correct trigonometric functions.
The function's period is 2π.
f(x)=sinx
f(x)=cosx
f(x)=tanx
The function's asymptotes are π units apart.
f(x)=sinx
f(x)=cosx
f(x)=tanx
The function has a maximum value of 1.
f(x)=sinx
f(x)=cosx
f(x)=tanx
b) If Keira has burned 640 calories cycling, how many miles has she cycled? Give any decimal answers to 2 d.p. x distance cycled Number of calories burned against distance cycled calories burned Calories burned 400 350 300 250 200 150 100 50 0 2 6 8 10 12 14 16 4 Distance cycled (miles)
Using the slope we know that the distance Keira traveled is 32 miles.
What is the slope?In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction.
Determine the coordinates of two points along the line that you choose. Find the difference between these two points' y-coordinates (rise).
Find the difference between these two points' x-coordinates (run).
Divide the difference in x-coordinates (rise/run or slope) by the difference in y-coordinates.
So, in the given situation:
c is calories burned and d is the distance.
Then,
x = kd
k is the slope = 200/10 = 20
Calories burned = 20 * distance cycled
When, c = 640:
640 = 20*distance
distance = 640/20
distance = 32 miles
Therefore, using the slope we know that the distance Keira traveled is 32 miles.
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HELPPPPPPP PLEASEEEEEEEEEEEEEEE
y=mx+b
The required equation of straight line is y = 0.03x + 20.
What is an equation?
A mathematical equation states that two quantities or values are identical. Equations are used when more than one factor has to be examined in order to fully understand or explain a situation.
The general form of an equation is y = mx + b, where m is the slope of equation and b is a constant.
From the given graph we get 2 points.
i.e., (0, 20) and (2000, 80)
Slope of the line is
[tex]m=\frac{80-20}{2000-0}\\\ \ = \frac{60}{2000}\\ = \frac{6}{200} \\= \frac{3}{100}[/tex]
Then the equation will be
[tex]y-20=\frac{3}{100}(x-0)\\\Rightarrow y-20=0.03x\\\Rightarrow y-0.03x-20=0\\\Rightarrow y = 0.03x+20[/tex]
Therefore, the required equation is y = 0.03x + 20, calculating with the help of given graph.
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In one year 120 students enrolled at a community college. This was 3/5 of the number of students accepted. How many of those accepted did not enroll
The number of students who did not enroll in the college given that only 3/5th of the total students accepted the admission is equal to 80 students.
Let us consider that the total number of students who enrolled for the process is equal to x. Since it is given that three-fifth of the total students who enrolled positively are equal to 120, this means that 3/5*x = 120.
Thus value of x can be calculated by cross multiplication as follows:
3/5*x = 120
x = 120 * 5/3 = 200
Now, since two third of the students didn't respond/ enroll, then this number can be calculated as the difference between the total numbers who joined and the number of students who accepted the enrollment process.
Number of students who accepted but did not enroll = 200 - 120 = 80
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For the table, determine whether the relationship is a function. Then represent the relationship using
words, an equation, and a graph.
The relationship in the table is a function because each input (x) has exactly one output (y). The equation for the relationship is y = 4 - x. The points (1, 3), (2, 2), and (3, 1) would all fall on this line.
Describe Equation?In mathematics, an equation is a statement that shows the equality between two expressions, usually with one or more variables. An equation is typically represented using an equals sign (=) between the two expressions.
For example, the equation 2x + 5 = 11 shows that the expression 2x + 5 is equal to 11. This equation has one variable, x, which can be solved to find its value. In this case, we can subtract 5 from both sides of the equation to get 2x = 6, and then divide both sides by 2 to get x = 3.
The relationship in the table is a function because each input (x) has exactly one output (y).
Using words, the relationship could be described as "y is equal to 4 minus the value of x."
The equation for the relationship is y = 4 - x.
The graph of the relationship would be a straight line that starts at the point (0, 4) and slopes downward to the right. The points (1, 3), (2, 2), and (3, 1) would all fall on this line.
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The answer is (x^2)*(a)/28 I just need the if condition
The value of the given expression is x²a/28.
What is an expression?Mathematical statements are called expressions if they have at least two words that are related by an operator and contain either numbers, variables, or both. A mathematical expression is a phrase that has a minimum of two numbers or variables and at least one mathematical operation. An absolute numerical number is referred to as a constant.
Variable: A variable is a marker with no fixed value.
Term: A term might be a single constant, a single variable, or a mix of a variable and a constant paired with multiplication or division.
The given expression is:
4x² + 2x³/7a³ ÷ 16 + 8x/a⁴
The expression can be written using multiplication as follows:
4x² + 2x³/7a³ × a⁴/16 + 8x
Take the common terms out:
2x²(2+ x)/7a³ × a⁴/8(2 + x)
Cancel the like terms:
x²a/28
Hence, the value of the given expression is x²a/28.
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Let us consider a circle of radius 2 cm. If an arc of this circle subtends an angle of 20 radian to the centre, then what is the length of the arc and area of the sector such formed?
The area of the sector is 40 cm².
Let us consider a circle of radius 2 cm. If an arc of this circle subtends an angle of 20 radian to the centre, then the length of the arc and area of the sector such formed are as follows:Length of the arcThe arc length of a circle is given by the formula L = rθ where r is the radius of the circle and θ is the angle subtended by the arc of the circle in radians.L = rθWhere L = Length of the arc, r = radius of the circle and θ = angle subtended by the arc of the circle in radians.Substituting the values r = 2 cm and θ = 20 radians, we have:L = 2 x 20 cmL = 40 cmTherefore, the length of the arc is 40 cm.Area of the sectorThe area of a sector is given by the formula A = (1/2) r²θ where r is the radius of the circle and θ is the angle subtended by the arc of the circle in radians.A = (1/2) r²θWhere A = area of the sector, r = radius of the circle and θ = angle subtended by the arc of the circle in radians.Substituting the values r = 2 cm and θ = 20 radians, we have:A = (1/2) x 2² x 20A = (1/2) x 4 x 20A = 40 cm²Therefore, the area of the sector is 40 cm².
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Simplify this expression.
1/4 + 4/5 (3/4 x - 1 1/9).
An inequality is shown.
2x - 5 < 33
Select all the values that are solutions to this inequality.
A.28
B.26
C.19
D.18
E.12
Answer:
To solve the inequality 2x - 5 < 33, we can add 5 to both sides to isolate the variable:
2x - 5 + 5 < 33 + 5
2x < 38
Next, we divide both sides by 2 to obtain the value of x:
2x/2 < 38/2
x < 19
Therefore, any value of x that is less than 19 is a solution to this inequality. Among the given values, only 12 and 18 are less than 19. So, the solutions to the inequality are:
E. 12
D. 18
you are dealt one card from a standard 52-card deck. playing cards find the probability of being dealt a three and an ace. the probability of being dealt a three and an ace is . (type an integer or a fraction.)
The probability of getting an ace and a three is (4/52) × (3/51) = 12/2652 which simplifies to 1/221.
There are 4 aces and 4 threes in a deck of 52 standard cards.
The probability of getting an ace on your first draw is 4/52.
Once you have the ace, there are 51 cards left in the deck, 3 of which are threes.
Therefore, the probability of drawing a three is 3/51.
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Environment An accident at an oil drilling platform is causing a circular oil slick. The slick is 0.08 foot thick, and when the radius of the slick is 150 feet, the radius is increasing at the rate of 0.5 foot per minute. At what rate (in cubic feet per minute) is oil flowing from the site of the accident?
The rate of oil flowing from the site of the accident is 47123.74 cubic feet per minute.
To find the rate at which oil is flowing from the site of the accident, we need to determine the rate of change of the volume of oil in the slick with respect to time.
We know that the slick is circular with a thickness of 0.08 feet and a radius that is increasing at a rate of 0.5 feet per minute. Let's call the radius of the slick at time t "r" and the volume of oil in the slick at time t "V".
The volume of a cylinder (which the slick approximates) is given by the formula V = πr^2h, where π is the constant pi and h is the height or thickness of the cylinder.
Differentiating both sides with respect to time, we get:
dV/dt = 2πrh(dr/dt) + πr^2(dh/dt)
We know that the thickness of the slick is constant at 0.08 feet, so dh/dt = 0. We also know that the radius is increasing at a rate of 0.5 feet per minute, so dr/dt = 0.5. Finally, we know that the radius of the slick is currently 150 feet, so r = 150.
Substituting these values into the formula, we get:
dV/dt = 2π(150)(0.5) + π(150)^2(0)
dV/dt = 47123.74 cubic feet per minute
Therefore, the rate at which oil is flowing from the site of the accident is approximately 47123.74 cubic feet per minute.
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3. What is the value of x?
x + 5
X
05
02.5
07.5
O 10
x-2
x + 1
(1 point)
The value of x is equal to; A. 5.
What is the basic proportionality theorem?In Mathematics, the basic proportionality theorem states that when any of the two (2) sides of a triangle is intersected by a straight line which is parallel to the third (3rd) side of the triangle, then, the two (2) sides that are intersected would be divided proportionally and in the same ratio.
By applying the basic proportionality theorem to the given triangle, we have the following:
x/(x + 5) = (x - 2)/(x + 1)
By cross-multiplying, we have the following:
x(x + 1) = (x - 2)(x + 5)
x² + x = x² + 5x - 2x - 10
By rearranging and collecting like-terms, the value of x is given by:
2x - 10 = 0
2x = 10
x = 10/2
x = 5.
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Find the slope of the line that passes to 8/8 and 6/7
Answer:
i hope it helps, just keep it up your work. good luck
Hi please help me thank you
The value of the r in following triangle is 29.
How to find r ?[tex]65° + (4r - 1) ^ 0 = 180°[/tex]
Angles on a straight line ddd up to 180 deg
therefore
65°+ 4r - 1 = 180°
4r - 1 = 180° - 65°
4r - 1 = 115°
4r = 115 + 1
4r = 116
r = 116/4
r = 29.
A triangle is a three-sided polygon with three angles. It is a simple closed shape and one of the fundamental geometric shapes. Triangles are classified based on the length of their sides and the angle measurement.
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please help quickly, this needs to be finished soon
Accοrding tο the fοrmula fοr the quadratic equatiοn, the maximum height is 98 ft.
What is a quadratic equatiοn?A quadratic equatiοn is a secοnd-degree pοlynοmial equatiοn οf the fοrm:
[tex]ax^2 + bx + c = 0[/tex]
where a, b, and c are cοnstants, and x is the variable. The term "quadratic" cοmes frοm the Latin wοrd "quadratus," meaning square, because the variable is squared in this type οf equatiοn.
Quadratic equatiοns can have οne, twο, οr zerο real sοlutiοns, depending οn the values οf the cοnstants a, b, and c. The sοlutiοns can be fοund using the quadratic fοrmula:
[tex]x = (-b\± \sqrt{(b^2 - 4ac)}) / 2a[/tex] οr by factοring the quadratic expressiοn intο twο linear factοrs.
The quadratic functiοn tο mοdel the vertical mοtiοn is:
[tex]h(t) = -16t^2 + v0t + h0[/tex]
where:
h(t) is the height at time t
t is the time in secοnds
v0 is the initial vertical velοcity in ft/s
h0 is the initial height in ft
Given v0 = 32 ft/s and h0 = 82 ft, the functiοn becοmes:
[tex]h(t) = -16t^2 + 32t + 82[/tex]
Tο find the maximum height, we can use the vertex fοrm οf a quadratic equatiοn:
[tex]h(t) = a(t - t0)^2 + h0[/tex]
where:
a is the cοefficient οf the quadratic term
t0 is the time at which the maximum height is achieved
h0 is the initial height
Cοmparing the twο fοrms, we see that a = -16 and t0 = -b/2a, where b is the cοefficient οf the linear term. In this case, b = 32, sο:
t0 = -32 / (2(-16)) = 1
Therefοre, the maximum height is achieved at t = 1 secοnd. Substituting intο the οriginal equatiοn, we get:
[tex]h(1) = -16(1)^2 + 32(1) + 82 = 98 ft[/tex]
Sο the maximum height is 98 ft.
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NEED HELP PLEASE HELP