Answer:
15
Step-by-step explanation:
|-7|=7
|8|=8
7+8=15
(section 7.3, problem 20) use the open space to show all of your work. this includes: sketching the curves, finding and labeling the points of intersection, setting up the appropriate definite integral(s) and evaluating them. place your numerical answer for the area of the region in the box. leave your answer in exact form
The solution of the expression is x=0 and it is the only solution that is an integer.
An expression in mathematics is a combination of numbers, variables, and mathematical operations that evaluates to a numerical value or an algebraic expression.
To do this, we need to pick a range of x values and substitute them into each equation to find the corresponding y values.
Next, we need to find the points of intersection between the two curves. These are the x values where the two curves cross each other and have the same y value. To find these points, we will set the two equations equal to each other and solve for x:
=> x=5x−x³
Expanding this equation, we get
=> 4x³+x=0.
Factoring this equation, we get
=> x(4x²+1)=0.
This gives us two solutions, x=0 and x=±i√(1/4), where i is the imaginary unit. Since x can only take on real values, x=0 is the only solution that is an integer.
Complete Question:
Use the open space to show all of your work. This includes: sketching the curves, finding and labeling the points of intersection, setting up the appropriate definite integral(s), and evaluating them. Place your numerical answer for the area of the region in the box. Leave your answer in exact form.
y = x,
y = 5x−x³
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PLEASE HELP!!!!Choose the equation below that is equivalent to 4(x - 7) - 2(x + 1) = -10
2(x - 7) + (x + 1) = -5
2(x - 7) - (x + 1) = 5
-2(x - 7) + (x + 1) = -5
-2(x - 7) + (x + 1) = 5
Answer:
\(-2(x-7)+(x+1)=5\)
Step-by-step explanation:
We can divide both sides by -2 to obtain
\(-2(x-7)+(x+1)=5\)
39.8% of consumers believe that cash will be obsolete in the next 20 years. Assume that 7 customers are randomly selected. Find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years. What is the probability?
Here, we are required to find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years.
The correct answer is Pr(C & fewer than 3) = 0.171
Let Pr(C) be the number of consumers who believe that cash will be obsolete in the next 20 years.
Therefore, since 39.8% believe so,
Pr(C) = 39.8/100 = 0.398If 7 consumers are selected randomly, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years will be;
Probability of 2 out 7 to believe so or Probability of 1 out of 7 to believe so.Pr(2/7) + Pr (1/7).Therefore the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is;
Pr (fewer than 3) = (2/7) + (1/7)Pr (fewer than 3) = 3/7Therefore, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is ;
Pr(C) × Pr (fewer than 3)i.e 0.398 × (3/7) = 0.171Therefore, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is ;
Pr(C & fewer than 3) = 0.171
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Please Help!! Solve For X
The value of x in the given figure is 8.
In the given figure there are two lines which are parallel.
We have to find the value of x.
In the straight line the sum of angles is 180 degrees.
8x+1+115=180
8x+116=180
Subtract 116 from both sides:
8x=180-116
8x=64
Divide both sides by 8:
x=64/8
x=8
Hence, the value of x in the given figure is 8.
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Solve for x. 4(3x - 5) = 7(2x + 3).
Answer:
x = -20.5
Step-by-step explanation:
Simplifying
4(3x + -5) = 7(2x + 3)
Reorder the terms:
4(-5 + 3x) = 7(2x + 3)
(-5 * 4 + 3x * 4) = 7(2x + 3)
(-20 + 12x) = 7(2x + 3)
Reorder the terms:
-20 + 12x = 7(3 + 2x)
-20 + 12x = (3 * 7 + 2x * 7)
-20 + 12x = (21 + 14x)
Solving
-20 + 12x = 21 + 14x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-14x' to each side of the equation.
-20 + 12x + -14x = 21 + 14x + -14x
Combine like terms: 12x + -14x = -2x
-20 + -2x = 21 + 14x + -14x
Combine like terms: 14x + -14x = 0
-20 + -2x = 21 + 0
-20 + -2x = 21
Add '20' to each side of the equation.
-20 + 20 + -2x = 21 + 20
Combine like terms: -20 + 20 = 0
0 + -2x = 21 + 20
-2x = 21 + 20
Combine like terms: 21 + 20 = 41
-2x = 41
Divide each side by '-2'.
x = -20.5
Cole is 6 years older than Ryan. The sum of their ages is 84. How old is Cole
Answer:
It will be 78
Step-by-step explanation:
Because if you do 84 minus 6 you get 78
the equation p=52+0.04w models relation between the amount of water bill payment p in dollars and the number of units of water w in slope of equation
The slope in the equation p = 52 + 0.04w represents the rate of change in the water bill payment for each additional unit of water consumed.
Specifically, the slope of 0.04 indicates that for every increase of one unit in the number of water units (w), the water bill payment (p) will increase by 0.04 dollars.
This means that the slope represents the incremental cost of each additional unit of water.
In practical terms, the slope of 0.04 implies that for every additional unit of water consumed, the water bill will increase by $0.04.
This indicates a constant rate of increase in the water bill for each additional unit of water used.
It's important to note that the slope remains constant throughout the equation, suggesting a linear relationship between the amount of water consumed and the corresponding bill payment.
Therefore, The slope, in this case, is the coefficient of the variable w, which is 0.04.
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The probable question may be:
What is the meaning of the slope in the equation p = 52 + 0.04w, which models the relationship between the water bill payment p in dollars and the number of units of water w ?
If the piece of paper is 60 inches long and 80 inches wide, how long is the diagonal cut that Zack made?
Answer:
100
Step-by-step explanation:
square root(L^2 + W^2)
ANSWER A water tower in New York City has the shape of a cylinder with a cone on top. The cylinder has a diameter of 12 feet and a height of 15 feet. The roof has an inclination angle of 25o . There are 7.48 gallons in a cubic foot. If residents of an apartment building are using the water from the tower at an average rate of 56 gallons per minute, determine how long, to the nearest minute, it will take to drain the entire tower.
Answer:
241 minutes
Step-by-step explanation:
Given:
Height of cylinder, h = 15 ft
Radius, r = \( \frac{d}{2} = \frac{12}{2} = 6 \) (both cylinder and cone have same radius)
Let's find the height of cone, since angle of inclination = 25°C.
\( tan25 = \frac{h}{r} \)
\( h = r tan25 \)
\( h = 6 tan25 = 2.8 \)
Height of cone = 2.8 ft
Let's find colume of tower.
Volume = Volume of cone + volume of cylinder.
Formula for volume of cone = ⅓πr²h
Volume of cylinder = πr²h
Therefore,
V = ⅓πr²h + πr²h
V = ⅓π*6²*2.8 + π*6²*15
V = 105.558 + 1696.46
V = 1802.02 ft³
Since volume is 1802.02 ft³, and there are 7.48 gallons in a cubic ft, the total gallon =
1802.02 * 7.48 = 13479.11 gallons
Water is used at an average rate of 56 gallons per minute.
Amount if time to drain the water:
Total gallons / average rate
\( = \frac{13479.11}{56} = 240.698 \)
≈ 241 minutes
If x = 1, what is 5x + 15 ?
Answer:
Step-by-step explanation:
putting the value of x in the equation then we simply get..
5×1+15 = 20
A survey of 800 randomly selected adults in a certain country found that 82% believed that
protecting the rights of those with unpopular views is a very important component of a strong
democracy.
a. Verify the Central Limit Theorem conditions.
b. Find a 95% confidence interval for the proportion of adults in the country who believe that
protecting the rights of those with unpopular views is a very important component of a strong
democracy.
c. Would a 90% confidence interval based on this sample be wider or narrower than the 95%
interval? Give a reason for your answer.
a) the Central Limit Theorem conditions are met. b) The 95% confidence interval for the proportion of adults who believe in protecting the rights of those with unpopular views is approximately 0.7934 to 0.8466.
c) . A 90% confidence interval would be wider than the 95% interval
How to Verify the Central Limit Theorem conditions.To verify the Central Limit Theorem (CLT) conditions, we need to check the following:
1. Random Sampling: The survey states that 800 adults were randomly selected, which satisfies this condition.
2. Independence: We assume that the responses of one adult do not influence the responses of others. This condition is met if the sample is collected using a proper random sampling method.
3. Sample Size: To apply the CLT, the sample size should be sufficiently large. While there is no exact threshold, a common rule of thumb is that the sample size should be at least 30. In this case, the sample size is 800, which is more than sufficient.
Therefore, the Central Limit Theorem conditions are met.
b. To find a 95% confidence interval for the proportion of adults who believe in protecting the rights of those with unpopular views, we can use the formula for calculating a confidence interval for a proportion:
CI = p ± z * √(p(1-p)/n)
where:
- p is the sample proportion (82% or 0.82 in decimal form).
- z is the z-score corresponding to the desired confidence level. For a 95% confidence level, the z-score is approximately 1.96.
- n is the sample size (800).
Calculating the confidence interval:
CI = 0.82 ± 1.96 * √(0.82(1-0.82)/800)
CI = 0.82 ± 1.96 * √(0.82*0.18/800)
CI = 0.82 ± 1.96 * √(0.1476/800)
CI = 0.82 ± 1.96 * √0.0001845
CI ≈ 0.82 ± 1.96 * 0.01358
CI ≈ 0.82 ± 0.0266
The 95% confidence interval for the proportion of adults who believe in protecting the rights of those with unpopular views is approximately 0.7934 to 0.8466.
c. A 90% confidence interval would be wider than the 95% interval. The reason is that as we increase the confidence level, we need to account for a larger margin of error to be more certain about the interval capturing the true population proportion. As a result, the interval needs to be wider to provide a higher level of confidence.
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Which expression is equivalent to
Answer:
The answer is the third option
Step-by-step explanation:
When an exponent is raised to the power of another exponent, both exponents are multiplied.
Recall that a number without an exponent is thought to be raised to the power of 1.
So after multiplying the exponents of all of the variables by 4, we are left with a solution identical to the third option.
Someone help please, it’s a geometry question and I don’t know the answer
Step-by-step explanation:
Use segment addition:
TU + UV = TV
2 + UV = 8
UV = 6
After training Naruto went to a ramen shop for dinner. Since Naruto eats ramen for lunch and dinner daily, the shopkeeper gives him a 33.33% discount. If ramen costs 45 cents, how much does Naruto spend in 15 days?
Points given: 20
To calculate how much Naruto spends on ramen in 15 days, we need to determine the total cost of ramen per day and then multiply it by 15.
Since Naruto receives a 33.33% discount, he pays 100% - 33.33% = 66.67% of the original price.
66.67% of 45 cents is (66.67/100) * 45 = 30 cents.
So, Naruto spends 30 cents on ramen per day.
To find out how much he spends in 15 days, we multiply the daily cost by the number of days:
30 cents * 15 = 450 cents.
Therefore, Naruto spends 450 cents, which is equivalent to $4.50, on ramen in 15 days.
What is the quotient of -3/8 and -1/3?
A. -1 1/8
B. -1/8
C. 1/8
D. 1 1/8
Answer:
d. 1 1/8
Step-by-step explanation:
-3 -1
---- ÷ -----
8. 3
Keep, Change, Flip.
-3/8 stays the same.
Division becomes multiplication.
-1/3 becomes -3/1
-3. -3. = 9
----- × ----- ------
8. 1. = 8
9/8 = 1 1/8
Answer:
D. 1 1/8
Step-by-step explanation:
what is the perpendicular and parallel lines of y= -2 -4x
y=1/4x-2 is a perpendicular line and y=-4x+3 is a parallel line.
The equation y= -2 -4x in the form of slope intercept form y=mx+b is y=-4x-2.
Where m represents the slope and y intercept is -2.
The slope of a line perpendicular to another line is the negative reciprocal of the slope of the given line.
The negative reciprocal of -4 is 1/4.
Therefore, the slope of the perpendicular line is 1/4.
The perpendicular line is y=1/4x-2.
We know that the parallel lines have same slope.
y=-4x+3
Hence, y=1/4x-2 is a perpendicular line and y=-4x+3 is a parallel line.
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* 9. Two fifths of what number is 120?
2/5
Answer:
300
Step-by-step explanation:
120 ÷ 2/5 = 300
What is 9C7 ?
A. 66
B. 55
C. 45
D. 36
Answer:
D. 36
Step-by-step explanation:
The formula for a combination :
ⁿCₓ = n! / (n - x)! x!Here we have ⁹C₇.
⁹C₇ = 9! / (9 - 7)! 7! = 9! / 2! x 7!9 x 8 x 7! / 2! x 7!9 x 8 / 236There are 36 different ways to arrange ⁹C₇. Therefore, the correct answer is option D.
Given that, ⁹C₇.
The number of combinations of n different things taken r at a time, denoted by nCr and it is given by, nCr=n!/r!(n−r)!,where 0 ≤ r ≤ n.
⁹C₇ = 9!/7!(9-7)!
= 9×8×7!/7!×2!
= 9×8/2×1
= 9×4
= 36
Therefore, the correct answer is option D.
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The tables below show the values of y corresponding to different values of x: Table A x 3 2 1 y 1 0 0 Table B x 3 5 4 y − 2 1 1 Which statement is true for the tables? (1 point)
a. Both Table A and Table B represent functions.
b. Both Table A and Table B do not represent functions.
c. Table A does not represent a function, but Table B represents a function.
d. Table A represents a function, but Table B does not represent a function.
Table A represents a function, but Table B does not represent a function.
Why Table A represents a function?Table must meet the following requirements in order to qualify as a function (see the.jpeg picture attached with this response):
The tables below show the values of y corresponding to different values of x: Table A x 3 2 1 y 1 0 0 Table B x 3 5 4 y − 2 1 1
1. Requirement: Each element in the first circle must be linked to at least one element in the second circle.
2. Requirement: There CANNOT be more than one relationship between items in the first circle and those in the second circle.
Table A is in fact a function because it meets BOTH of these requirements.
Table B is not a function since it meets the FIRST criteria but not the SECOND condition.
so
Table A represents a function, but Table B does not represent a function.
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If 400 x 300 = 120,000
And 40 x 30 is 1,200
Fill in the blanks and show your work
*_____ x ______ = 12,000?
Answer:
this list
Step-by-step explanation:
1×12000=12000
2×6000=12000
3×4000=12000
4×3000=12000
5×2400=12000
6×2000=12000
8×1500=12000
10 ×1200=12000
12 ×1000=12000
The measures of the angles of △ABC are given by the expressions in the table.
The angles of the triangle are 125 degrees, 20 degrees, and 35 degrees.
Define triangles.A triangle is a closed geometric shape with three sides, three angles, and three line segments. Three non-collinear points are joined by line segments to create the simplest polygon, which has three non-collinear points.
Triangles can be categorized according to the size of their sides and angles. Triangles can be categorized as equilateral (all sides are equal in length), isosceles (both sides are equal in length), or scalene based on their sides (all sides are different in length). Triangles can be categorized as acute (all angles are less than 90 degrees), obtuse (one angle is greater than 90 degrees), or right (one angle is greater than 90 degrees) (one angle is exactly 90 degrees).
In any triangle, the sum of the three interior angles is always 180 degrees. Therefore, we can write:
a + b + c = 180
Substituting the given values, we get:
(6x-1) + 20 + (x+14) = 180
Simplifying and solving for x, we get:
7x + 33 = 180
7x = 147
x = 21
Now that we have the value of x, we can substitute it back into the expressions for the angles to find their values:
angle a = (6x-1) = (6*21-1) = 125 degrees
angle b = 20 degrees
angle c = (x+14) = (21+14) = 35 degrees
Therefore, the angles of the triangle are 125 degrees, 20 degrees, and 35 degrees.
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Please help! Correct answer only, please! Consider the matrix shown below: Find the determinant of the matrix A. Group of answer choices A. The Determinant cannot be found for a matrix with these dimensions B. 11 C. 7 D. 23
Answer: d) 23
Step-by-step explanation:
Consider matrix \(\left[\begin{array}{cc}a&b\\c&d\end{array}\right]\). The determinant is: ad - bc
In the matrix given, a = 5, b = -1, c = 3, d = 4
det A = ad - bc
= 5(4) - 3(-1)
= 20 - (-3)
= 20 + 3
= 23
please answer this problem step by step
The intervals of each behavior of the function are given as follows:
Decreasing: (-∞, -3).Constant: (-3, 3).Increasing: (3, ∞).How to classify the function as increasing, decreasing or constant?The function is increasing when the graph moves right and up.The function is decreasing when the graph moves right and down.The function is constant when the graph of the function is an horizontal line.More can be learned about functions at https://brainly.com/question/24808124
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14/5 + - 4/3 =
Adding and Subtracting Fractions.
Answer:
Step-by-step explanation:
\(1 \frac{7}{15}\)
Can some on help me not sure thanks
Answer:
13 I think
Step-by-step explanation:
So basically all i did was double what the gate had. 5=15 3=13 I dont know if that makes lol
Alan needs to mix 3 tablespoons of salt with 5 tablespoons of vinegar to make a cleaning solution. How many tablespoons of salt are needed for each tablespoon of vinegar? (5 points)
5 over 3 tablespoons
3 over 8 tablespoon
3 over 5 tablespoon
5 over 8 tablespoon
Answer:
I think it's C but I'm still thinking about this but it's C I think
Step-by-step explanation:
Sarah and Jack go shopping Jack spends 20 percent of his money and Sarah spend 1/4 of her money how spends more
Answer:
Sarah, if each had the same amount of money to start with
Step-by-step explanation:
1/4=.25 or 25% 25%>20%
Relationships in Figures
Line segment AB is one unit long. If point C cuts AB so that AC = 0.618, what is the ratio of AC to CB?
a. 1
b. 1.618
c. 1.32
d. 1.543
Please select the best answer from the choices provided
Answer:
B. 1.618
Step-by-step explanation:
I calculated it logically
50 POINTS Which polynomial is a quartic trinomial?
Step-by-step explanation:
The first choice is a quartic trinomial
Each card in a set of cards has a different number from 1 to 12 written
on it. A student randomly chooses a card, records the number shown
on the card, and replaces the card. The table shows the results of the
student choosing a card 25 times.
Based on the data in the table, how
many of the next 125 cards the
student chooses could be expected
to have a number shown on the card
that is a multiple of 4?
Results
Answer: 35
Step-by-step explanation: i first divided 12 and 125 since there is 125 cards in total and 12 different cards which gives you 10 point something. There is 3 multiples of 4 so i multiplied 3x10 which gives you 30 and the closest answer is 35. You're welcome
Answer:
35
Step-by-step explanation:
got it right