Answer:
Lower bound 3.5,upper bound 4.5
3.5<=4<4.5
If f(x)=2x^3-6x^2-16x-20f(x)=2x *3 −6x *2−16x−20 and f(5)=0, then find all of the zeros of f(x)f(x) algebraically.
The zeros of the cubic function f(x) = 2x³ - 6x² - 16x - 20 are given as follows:
x = 5, x = -1 + i, x = -1 - i.
How to obtain the solutions to the equation?The equation is defined by the rule presented as follows:
f(x) = 2x³ - 6x² - 16x - 20.
One solution for the equation is given as follows:
x = 5.
Because f(5) = 0.
Then (x - 5) is a linear factor of the function f(x), which can be written as follows:
2x³ - 6x² - 16x - 20 = (ax² + bx + c)(x - 5).
This is because the product of a linear function and a quadratic function results in a cubic function.
Now we expand the right side to begin finding the coefficients of the quadratic function that we are going to solve to find the remaining zeros:
2x³ - 6x² - 16x - 20 = = ax³ + (b - 5a)x² + (c - 5b)x - 5c.
Then these coefficients are obtained comparing the left and the right side of the equality as follows:
a = 2.-5c = -20 -> c = 4.b = -6 + 5a = 4.Hence the equation is:
2x² + 4x + 4.
Using a quadratic equation calculator, the remaining zeros are given as follows:
x = -1 + i.x = -1 - i.More can be learned about the solutions of an equation at brainly.com/question/25896797
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Help please!! Will give 5 star rating for correct answer!!
Answer:
x = 74 degrees
Hope that helps
Answer:
74
Step-by-step explanation:
2x+32=180
2x=148
x=74
Cones and prisms both have only one base.
A.true
B.False
Answer:
False
Step-by-step explanation:
Prisms can have more than one base.
i five man take 45 hours to build a wall how long will it take 9 men working at the same pace to build this wall
Answer:
81 hours
Step-by-step explanation:
Let x be the time are needed
45:5 = x:9
5x = 45×9
5x = 405
x = 81
The time it takes 9 men working at the same pace to build this wall is 81 hours
Ratio and proportionsLet x be the time are needed for 9men
If it takes five-man take 45 hours to build a wall then, we can have the ratio
45:5 = x:9
5x = 45×9
5x = 405
x = 81
Hence the time it takes 9 men working at the same pace to build this wall is 81 hours
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Write down the mathematical name of the shape made by each net
The shapes that would be formed by the nets are:
a. Cuboid
b. square pyramid
What is the Net of a Cuboid?A cuboid is a shape that is formed by the net that has six (6) flat faces with angles that are right angles.
The net in figure a above would form a cuboid shape when joined together.
What is the Net of a Square Pyramid?A square pyramid is a thee-dimensional geometric shape that is formed by the net consists of a square base and four triangular sides which joined together at a common vertex.
The image attached below shows the shape that would be formed by the net in figure B, which would be a square pyramid.
Therefore:
a. Cuboid
b. square pyramid
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13. Which equations are true? Select All that apply
0 17.25= 7.25
0 17.251 = -7.25
0 17.251 = 17.251
O 1-7.25) = 7.25
0 -7.25) = -7.25
-
Answer: 0 17.251 = -7.25
0 17.251 = 17.251
Step-by-step explanation:
make sense
Which is the solution of the quadratic equation (4y - 3)^2 = 12?
Answer:
Step-by-step explanation:
Let's solve (4y - 3)^2 = 72 for y. To do this, take the square root of both sides. This yields:
4y - 3 = ±√72 = ±√(36·2) = ±6√2
Then 4y = 3 ±6√2, or
3 ± 6√2
y = ----------------
4
Isabel and Khalil buy peaches and apricots. At the fruit stand, peaches cost $0.85 each, and apricots cost $0.55 each. Tax is included in the cost of each fruit. The friends have $5 to spend. Which is a possible combination of the number of peaches and apricots they can get for $5? Responses 1 peach, 8 apricots 1 peach, 8 apricots 2 peaches, 5 apricots 2 peaches, 5 apricots 3 peaches, 7 apricots 3 peaches, 7 apricots 4 peaches, 3 apricots 4 peaches, 3 apricots
The possible combination of the number of peaches and apricots they can get for $5 is 2 peaches and 5 apricots.
What is the possible combination?The equation that represents the total cost of peaches and apricots is:
Total cost = (number of peaches x cost of one peach) + (number of apricots x number of apricots)
$5 = ($0.85 x p) + ($0.55 x a)
Total cost of buying 1 peach and 8 apricots:
($0.85 x 1) + ($0.55 x 8) = $5.25
Total cost of buying 2 peaches and 5 apricots:
($0.85 x 2) + ($0.55 x 5) = $4.45
Total cost of buying 3 peaches and 7 apricots:
($0.85 x 3) + ($0.55 x 7) = $6.40
Total cost of buying 4 peaches and 3 apricots:
($0.85 x 4) + ($0.55 x 3) = $5.05
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8 (2/3) divided by (-104/33)
Answer:
-2 3/4.
Step-by-step explanation:
8 2/3 = 26/3
26/3 / -104/33
= 26/3 * 33/-104
= 1 /3 * 33/-4
= 1/1 * 11/-4
= -11/4
= -2 3/4.
Most employers require their prospective employees to take a drug test. If the employee tests positive, that means the person uses illegal drugs. According to research (https://www.cbsnews.com/news/drug tests-not-immune-from-false positives/e), not all people that test positive actually use illegal drugs. Assume that 6% of prospective employees actually use illegal drugs. The false positive rate is 5% (person does NOT use illegal drugs, but they test positive), The false negative rate is 10% (person DOES use illegal drugs but they test negative), Draw and label a tree diagram (30 points) and answer the question below (MAKE SURE TO SHOW ALL WORK: (20 points) What percent of prospective employees who test positive actually use illegal drugs? Upload Choose a File
Approximately 53.47% of prospective employees who test positive actually use illegal drugs.
we will use a tree diagram and the given information: 6% of prospective employees actually use illegal drugs, the false positive rate is 5%, and the false negative rate is 10%.
Step 1: Draw a tree diagram:
- First level: divide into two branches, one for "Uses Drugs (6%)" and one for "Does Not Use Drugs (94%)".
- Second level: under "Uses Drugs", divide into two branches, "Tests Positive (90%)" and "Tests Negative (10%)". Under "Does Not Use Drugs", also divide into two branches, "Tests Positive (5%)" and "Tests Negative (95%)".
Step 2: Calculate the probabilities:
- Probability of using drugs and testing positive: 0.06 * 0.9 = 0.054
- Probability of not using drugs and testing positive: 0.94 * 0.05 = 0.047
Step 3: Determine the percentage of prospective employees who test positive and actually use illegal drugs:
- Add the probabilities of testing positive (both using and not using drugs): 0.054 + 0.047 = 0.101
- Divide the probability of using drugs and testing positive by the total probability of testing positive: 0.054 / 0.101 ≈ 0.5347
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what is it called when something gradually increases in size
Answer:
When it increases slowly with time
the sum of two consecutive integers is -35. Name the integers
What is the complete factorization of the polynomial below?
O A. (x+2)(x+)(**)
OB. (x-2)(x+)(x-)
C. (x-2)(x+)(x+1)
OD. (x+2)(x+1)(x-1)
The complete factorization of the polynomial x³ + 2x² -x - 2 is equal to (x + 2)(x + 1)(x - 1)
What is an equation?
An equation is an expression that shows how numbers and variables are related to each other using mathematical operators.
A polynomial is an expression consisting of coefficients and variables forming an equation.
Given the polynomial:
x³ + 2x² -x - 2
Factorizing:
= (x + 2)(x² - 1)
= (x + 2)(x + 1)(x - 1)
The polynomial x³ + 2x² -x - 2 is equal to (x + 2)(x + 1)(x - 1)
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What is the rate of change in this graph?
The rate of change in the given graph is 21/4.
The rate of change defines the speed of a variable changes over another variable. On the given graph, we can calculate the rate of change using the formula:
Rate of change = Δy / Δx
To calculate the rate of change of the given graph, we need to identify 2 points first. We take:
(0, 0)
(4, 21)
Rate of change = Δy / Δx
Rate of change = y₂ - y₁
x₂ - x₁
Rate of change = 21 - 0
4 - 0
Rate of change = 21/4
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An equation in slop intercept form the y intercept -5 the slope -1/2
Answer:
y=-1/2x-5
Step-by-step explanation:
The following system of linear equations is shown in the graph.
y=1/4x+5
x-4y=4
How many solutions does the system of linear equations have?
A. No solution
B. Infinitely many solutions
C. One solution at (4,0)
D. One solution at (0,-1)
Answer:
Step-by-step explanation:
The slopes of both those lines are the same so there is no solution. Use slope triangles to find out the slope. They are both 1/4.
A. No solution
y = 1/4x+5
x - 4y = 4
You can simplify the second equation into y = 1/4x - 1
Since these equations both have the same slope, they are parallel. When two lines are parallel, they have no solutions.
last month you spend $50 on clothing this month you spend 110% of what u spend last month
Answer:
If you spend 110% more you would have spent 105 dollars. 110 percent of 50 is 55 so I added that to the orginal amount to get what you would have spent if you spent 110 percent more
Which of the following three data sets is Cross sectional? a. BCAD data and links b. Demographic data c. Code cases
Among the three options provided, the cross-sectional data set is the demographic data. Correct option is B).
Cross-sectional data refers to a type of data that captures information about different individuals, entities, or units at a specific point in time. It provides a snapshot of a population or sample at a particular moment, allowing for comparisons and analysis of various characteristics or variables. In the case of demographic data, it typically includes information about individuals' age, gender, education level, income, and other demographic attributes. This data set does not capture changes or trends over time but rather provides a snapshot of the population's characteristics at a specific time.
On the other hand, the BCAD data and links could refer to data related to building codes, regulations, and their corresponding references, while code cases may refer to specific instances or examples of code violations or compliance. These data sets may be specific to certain incidents or cases and do not necessarily capture information about a population or sample at a particular point in time, making them less likely to be considered cross-sectional data.
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2. When completing a problem that deals with American currency, which number would not be an appropriate answer?
O $5.935560
O $24.97
O $6.00
O $543,586.98
Find the distance between the points (5, - 4) and (5, 7)
Find the value of b. A. 75 B. 72.5 C. 145 D. 65
Answer:
B. 72.5
Step-by-step explanation:
b° = 1/2(180° - 35°)
b° = 1/2 * 145°
b° = 72.5°
b = 72.5
The value of angle b will be 72.5°. Then the correct option is B.
What is a circle?It is the center of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.
The angle that the very same arc subtends at any point around the circle's periphery is the double of the angle that same arc subtends at the center.
The central angle is 35°. Then the angle at the periphery will be
⇒ 35 / 2
⇒ 17.5°
We know that the radius of the circle and tangent of the circle makes 90°.
Then the angle b is given as
b + 17.5 + 90 = 180
b = 180 – 107.5
b = 72.5°
Thus, the value of angle b will be 72.5°.
Then the correct option is B.
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You are the director of the customer service center in Company Alpha. You find that the mean time between calls to the center is 6 minutes with standard deviation of 4 minutes. The effective response time is 11 minutes with a standard deviation of 20 minutes. (a) Identify the following parameters: ta
tθ
∂a
∂θ
ra:
rθ:
The identified parameters are:
ta = 6 minutes
tθ = 11 minutes
∂a = 4 minutes
∂θ = 20 minutes
ra = 1/6 minutes^(-1)
rθ = 1/11 minutes^(-1)
ta: Mean time between calls to the center
tθ: Effective response time
∂a: Standard deviation of the time between calls to the center
∂θ: Standard deviation of the effective response time
ra: Rate of calls to the center (inverse of ta, i.e., ra = 1/ta)
rθ: Rate of effective response (inverse of tθ, i.e., rθ = 1/tθ)
Given information:
Mean time between calls to the center (ta) = 6 minutes
Standard deviation of time between calls (∂a) = 4 minutes
Effective response time (tθ) = 11 minutes
Standard deviation of effective response time (∂θ) = 20 minutes
Using this information, we can determine the values of the parameters:
ta = 6 minutes
tθ = 11 minutes
∂a = 4 minutes
∂θ = 20 minutes
ra = 1/ta = 1/6 minutes^(-1)
rθ = 1/tθ = 1/11 minutes^(-1)
So, the identified parameters are:
ta = 6 minutes
tθ = 11 minutes
∂a = 4 minutes
∂θ = 20 minutes
ra = 1/6 minutes^(-1)
rθ = 1/11 minutes^(-1)
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24) Use approximation to find the square root of the given number to the nearest hundredth.
√20
Answer:
The square root of 20 is 4.472.
Step-by-step explanation:
six is what percentage of ten?
Answer: 60%
Step-by-step explanation:
6/10 = 60/100 = 60%
Answer: 60%
Step-by-step explanation:
6/10=60/100
if r(t)= sint, then find r(14)(π/3)
When t is equal to 14(π/3) in the function r(t) = sin(t), the corresponding output value is √3/2.
In mathematics, functions play a crucial role in describing relationships between variables. One type of function is the trigonometric function, which deals with the properties and relationships of angles.
In this problem, we are given a trigonometric function r(t) = sin(t) and asked to find the value of r(14)(π/3).
The function r(t) = sin(t) represents a sine function, where t is the input variable (in this case, representing time) and r(t) is the corresponding output. The sine function, denoted by sin(t), calculates the ratio of the length of the side opposite a given angle in a right triangle to the hypotenuse. However, in this context, we are dealing with the unit circle, where the x and y coordinates of a point on the circle correspond to the sine and cosine values of the angle, respectively.
To find r(14)(π/3), we need to substitute 14(π/3) into the function
r(t) = sin(t).
Step 1: Multiply 14 by π/3:
14(π/3) = (14π)/3
Step 2: Substitute the result into the function:
r(14)(π/3) = sin((14π)/3)
At this point, we have the expression sin((14π)/3), which represents the value of the sine function at an angle of (14π)/3.
To evaluate sin((14π)/3), we can use the properties of the sine function and the unit circle. In the unit circle, the x-coordinate of a point on the circle corresponds to the sine value of the angle.
Step 3: Simplify the angle:
(14π)/3 = (12π)/3 + (2π)/3 = 4π + (2π)/3
Step 4: Find an equivalent angle within the unit circle:
To find an equivalent angle within the unit circle, we need to subtract or add full revolutions (2π) until the angle falls within the range [0, 2π].
In this case, 4π is equivalent to 2 full revolutions (2π) since it takes us back to the same point on the unit circle.
Thus, we can simplify the angle to (2π)/3.
Step 5: Evaluate the sine function at (2π)/3:
To find the sine value at (2π)/3, we can refer to the unit circle. At (2π)/3, the x-coordinate of the corresponding point on the unit circle is √3/2.
Therefore, r(14)(π/3) = sin((14π)/3) = sin((2π)/3) = √3/2.
After evaluating the given expression, we find that r(14)(π/3) = √3/2. This means that when t is equal to 14(π/3) in the function r(t) = sin(t), the corresponding output value is √3/2.
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likewise 133 degree is equal to 87 degree in the second at what temperature will both thermometer read the same
Here's your answer..........
Given: Y is the midpoint of XZ
Prove: XY = 1/2 XZ
Statements
Reasons
Answer:
The proposition If Y is the midpoint of XZ, then XY = 1/2 XZ is true.
Step-by-step explanation:
We proceed to present the demonstration of the following proposition:
If Y is the midpoint of XZ, then XY = 1/2 XZ.
1) Y is the midpoint of XZ. Given.
2) \(XY + YZ = XZ\) Definition of line segment.
3) \(XY = YZ\) By 1)
4) \(2\cdot XY = XZ\) 3) in 2)
5) \(XY = \frac{1}{2}\cdot XZ\) Algebra/Result
Therefore, the proposition If Y is the midpoint of XZ, then XY = 1/2 XZ is true.
PLEASE HURRYYYYYY
4Solve the following literal equation for
R: T= R + 25.3
A. R= T + 25.3
B. R = 25.3T
C. R= T - 25.3
D. 25.3
R=
T
To find the quotient of 726.02 and 1,000, move the decimal point in 726.02
Choose...
places to the
Choose...
.
Answer:
you move three places to to left so the answer is 3 and left
HELLLLLLLLLLLLLLLLPP
Answer:
a
Step-by-step explanation: