Find the equation that has given solutions: x=-5 and x =2

Ben could have saved $0.15 per gallon if he had gone to the gas station across the street.

If Ben filled his 20-gallon tank of gas with regular fuel for $59.80, then the cost per gallon can be found by dividing the total cost by the number of gallons:

cost per gallon = total cost / number of gallons

cost per gallon = $59.80 / 20 gallons

cost per gallon = $2.99/gallon

If the gas station across the street sold regular fuel for $2.84 a gallon, then the amount Ben could have saved per gallon is:

savings per gallon = cost per gallon at initial station - cost per gallon at other station

savings per gallon = $2.99/gallon - $2.84/gallon

savings per gallon = $0.15/gallon

Therefore, Ben could have saved $0.15 per gallon if he had gone to the gas station across the street.

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a. If t represents time in hours and d represents distance in miles, and Caden walks at a steady rate of 3.6 miles per hour, the equation that models the relationship between these variables is:

d = 3.6t

b. To calculate the distance Caden will walk in 3/4 of an hour, plug 3/4 into the equation for t:

d = 3.6(3/4) = 2.7 miles

Caden will walk 2.7 miles in 3/4 of an hour.

c. To calculate how long it will take for Caden to walk 4.32 miles, plug 4.32 into the equation for d and solve for t:

4.32 = 3.6t
t = 4.32/3.6 ≈ 1.2 hours

It will take Caden approximately 1.2 hours to walk 4.32 miles.

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Answer: 1/5

Step-by-step explanation:

There are 10 slips of paper.

The only numbers less than three are 1 and 2

The probability that he will pick up a slip of paper less than three is 2 since only 1 and 2 are less than three.

Therefore the probability is 2/10, and when simplified, it is 1/5.

Therefore the answer is 1/5.

If you have any more questions feel free to ask in the comments! I'd be happy to help!

The cordinate points with x- and y-intercepts of the graph of a linear equation, 4x+ 8y = 20, are equals to the (5,0) and (0, 5/2).

We have an equation, 4x + 8y = 20 --(1) which is linear equation with two variables. We have to determine the the x- and y-intercepts of the graph of equation (1). The graph of line (1) is present in above figure. Slope intercept form of equation (1) is written as [tex]y = - \frac{1}{2}x + \frac{5}{2}[/tex],

The x-intercept is point where a line crosses the x-axis, and the y-intercept is the point where the line crosses the y-axis. As we know, two points determine any line, we can graph lines using the x- and y-intercepts. To determine the x-intercept, we substitute y=0 and solve for x. So, when y = 0 then 4x + 0 = 20

=> x = 5

similarly to determine the y-intercept, set x=0 and solve for y. When x = 0

=> 8y = 20

=> y = 5/2.

Hence, required value are (5,0) and (0,5/2).

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The image of (5,−4) after a dilation by a scale factor of 4 centered at the origin is (20,−16)

From the question, we have the following parameters that can be used in our computation:

Point = (5,−4)

Scale factor of 4 centered at the origin

The image after a dilation centered at the origin is

Image = Point  * Scale factor

Substitute the known values in the above equation, so, we have the following representation

image = (5,−4) * 4

Evaluate

image = (20,−16)

Hence, the image after a dilation centered at the origin is (20,−16)

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The resultant equation is n + 11 = 25 and the number n is 14.

Algebraic equation:

An algebraic equation is a mathematical statement that equates two expressions using one or more variables. Solving a single variable equation can be done by adding or subtracting the same integer on both sides. Similarly multiplying or dividing by the same integer.

The information we have

The sum of a number n and 11 is equal to 25.

The statement can represent an equation and solve for n as follows

Here sum of two numbers indicates adding

Hence,  n + 11 = 25

To solve for n, isolate n on one side of the equation.

This can be done by subtracting 11 from both sides of the equation:

=> n + 11 - 11 = 25 - 11

=> n = 14

Therefore,

The resultant equation is n + 11 = 25 and the number n is 14.

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The position of particle in a straight line with v = t(t^2 + 1)³ + 3t is (1/8)t⁸ + (3/6)t⁶ + (3/4)t⁴ + 2t² C.

To find an expression for the position s after a time t, we need to integrate the velocity function v with respect to time t.

Using the power rule of integration and the constant of integration C, we have:

s = ∫v dt = ∫[t(t² + 1)³ + 3t] dt

after expanding t(t² + 1)³ using binomial theorem we have-

(t^2 + 1)³ = t⁶ + 3t⁴ + 3t² + 1

Substituting this into the integral, we get:

s = ∫[t(t⁶ + 3t⁴ + 3t^2 + 1) + 3t] dt

s = ∫[t^7 + 3t⁵ + 3t³ + t + 3t] dt

s = ∫t^7 dt + 3∫t⁵ dt + 3∫t³ dt + ∫4t dt

s = (1/8)t⁸ + (3/6)t⁶ + (3/4)t⁴ + 2t² + C

Therefore, the expression for the position s after a time t is:

S = (1/8)t⁸ + (3/6)t⁶ + (3/4)t⁴ + 2t² + C, where C is the constant of integration.

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Answer:

x=28

Step-by-step explanation:

Let the length of QR be 'x' cm.

(We will be using the chord theorem; the products of the lengths of the line segments on each chord are equal.)

Therefore,

PR x QR = NR x OR

13 x = 30 x 12

x= 360/13

x = 27.7

x = 28

The difference between the volume of the sphere and the volume of the cone is approximately 838.81 cubic inches.

The volume of a sphere is given by the formula V = (4/3)πr³, where r is the radius. Thus, for a sphere with a radius of 6 inches, the volume is:

V_sphere = (4/3)π(6³) = 904.78 cubic inches

The volume of a cone is given by the formula V = (1/3)πr[tex]^{2h}[/tex], where r is the radius and h is the height. Thus, for a cone with a radius of 3 inches and a height of 7 inches, the volume is:

V_cone = (1/3)π(3²)(7) = 65.97 cubic inches

Therefore, the difference between the volume of the sphere and the volume of the cone is:

V_sphere - V_cone = 904.78 - 65.97 = 838.81 cubic inches

Hence, the difference between the volume of the sphere and the volume of the cone is approximately 838.81 cubic inches.

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(1) it takes about 10 hours to thaw a 20-pound turkey in cold water.(2) it takes an additional 0.25 hours (or 15 minutes) to thaw in the refrigerator.

A linear function is a function that represents a straight line in the coordinate plane. For example, y = 3x - 2 represents a straight line in the coordinate plane and thus a linear function. Since y can be replaced by the function f(x), this function can be written as f(x) = 3x - 2.

 a. A typical thawing rate when thawing in the refrigerator  is about 1 day per 4-5 kilograms of turkey meat. So if you have a 20 pound turkey, it will take about 4-5 days to thaw in the fridge. In cold water, the thawing rate  is about 30 minutes per pound, so it takes about 10 hours to thaw a 20-pound turkey in cold water.

b) The initial value may represent the weight of the frozen turkey before thawing begins. c. Let y be the time it takes to thaw the turkey in hours and let x be the weight of the turkey in pounds. Assuming a linear relationship between melting time and weight, we can write:

y = mx + b

where m is the thaw rate (in hours per pound) and b is the intercept (the time it takes to thaw a 0-pound turkey, which is 0). From part a, we know that the refrigerator thaw rate  is about 1 day per 4-5 pounds of turkey, or about 0.25-0.2 hours per pound. So we can use m = 0.25 in our linear function:

y = 0.25x + 0

This means that for every additional pound of turkey, it takes an additional 0.25 hours (or 15 minutes) to thaw in the refrigerator.

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Answer:

[tex] \sqrt{125 {p}^{2} } = p \sqrt{25} \sqrt{5} = 5p \sqrt{5} [/tex]

D is the correct answer.

One specific example of a rule for the function f such that the series Σα) f(n)/n^2 does not converge is the function f(n) = (-1)^n.

To justify this, we can use the alternating series test, which states that if a series has alternating signs and the absolute values of its terms decrease monotonically to 0, then the series converges. However, if the absolute values of its terms do not decrease monotonically to 0, then the series diverges.

In this case, we have Σα) f(n)/n^2 = Σα) (-1)^n/n^2. The absolute value of each term is 1/n^2, which does decrease monotonically to 0. However, the signs of the terms alternate, meaning that the series does not converge. Therefore, this is a valid example of a rule for the function f such that the series Σα) f(n)/n^2 does not converge.

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Answer:

Step-by-step explanation:

By the figure, it would mean:

67, 67, 68

72, 72, 73, 76, 76, 77, 78

80, 81, 83, 83, 85, 85, 85, 87, 88

91, 91, 93, 95, 99

a) 2 students

b) 9 students

c) 2 students

Explanation : 5 students (90s) - 3 students (60s) = 2 students

d) 81

Explanation : (67 + 67 + 68 + 72 + 72 + 73 + 76 + 76 + 77 + 78 + 80 + 81 + 83 + 83 + 85 + 85 + 85 + 87 + 88 + 91 + 91 + 93 + 95 + 99) ÷ 24 = 81.33

Answer:

parabola

Step-by-step explanation:

The graph shape is a parabola, opens-up type

The equation of the tangent line to the curve at (1,4) is: y = 8x - 4

To verify whether the point (1,4) is on the curve [tex]\sqrt{xy}= x^2y - 2,[/tex]

We can substitute x=1 and y=4 into the equation and see if it is satisfied:

√(14) = 1^24 - 2

2 = 2

Since the equation is true, (1,4) is on the curve.

To find the tangent line to the curve at the point (1,4),

We need to find the derivative of the equation with respect to x and evaluate it at x=1:

[tex]\sqrt{xy} = x^2y - 2[/tex]

Differentiating with respect to x:

[tex](1/2)(x^{(-1/2))}(y) + (1/2)(y^{(-1/2))}(x) = 2xy[/tex]

Simplifying and evaluating at x=1, y=4:

[tex]2 + (1/2)(4^{(-1/2))(1)} = 8[/tex]

The slope of the tangent line is 8.

Using point-slope form, the equation of the tangent line to the curve at (1,4) is:

y - 4 = 8(x - 1)

y = 8x - 4

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6. The probability that all 5 couples will have a baby of the preferred gender is 0.2373.

7. The probability that at least 4 of the 5 couples will have a baby of the preferred gender is 1 - 0.3672 = 0.6328.

Probability is a way to gauge how likely something is to happen. Many things are difficult to predict with absolute certainty.

Answer: The probability that one couple will have a baby of the preferred gender is 0.75. Assuming the gender of each baby is independent of the others, the probability that all 5 couples will have a baby of the preferred gender is 0.75⁵ = 0.2373.

Numeric value: 0.2373

In words: The probability that all 5 couples will have a baby of the preferred gender is 0.2373.

Answer: There are two ways to approach this problem. One way is to calculate the probability of each possible outcome (0 to 5 couples having a baby of the preferred gender) and then add up the probabilities for the outcomes where at least 4 couples have a baby of the preferred gender. Another way is to use the complement rule and subtract the probability that fewer than 4 couples have a baby of the preferred gender from 1.

Using the first method, we can calculate the probabilities as follows:

- 0 couples: 0.25⁵ = 0.0009766

- 1 couple: 5 x 0.75 x 0.25⁴ = 0.01465

- 2 couples: 10 x 0.75² x 0.25³ = 0.08789

- 3 couples: 10 x 0.75³ x 0.25² = 0.2637

- 4 couples: 5 x 0.75⁴ x 0.25 = 0.3955

- 5 couples: 0.75⁵ = 0.2373

The probabilities for the outcomes where at least 4 couples have a baby of the preferred gender are 0.3955 and 0.2373, so the total probability is 0.3955 + 0.2373 = 0.6328.

Using the second method, we can calculate the probability that fewer than 4 couples have a baby of the preferred gender as follows:

- 0 couples: 0.25⁵ = 0.0009766

- 1 couple: 5 x 0.75 x 0.25⁴ = 0.01465

- 2 couples: 10 x 0.75² x 0.25³ = 0.08789

- 3 couples: 10 x 0.75³ x 0.25² = 0.2637

The probability that fewer than 4 couples have a baby of the preferred gender is the sum of these probabilities: 0.0009766 + 0.01465 + 0.08789 + 0.2637 = 0.3672.

Therefore, the probability that at least 4 of the 5 couples will have a baby of the preferred gender is 1 - 0.3672 = 0.6328.

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To find the possible Hamiltonian circuits that begin with JVTSR, we can start by constructing a path that begins with JVTSR and visits each vertex exactly once. Such a path must be of the form JVTSRX, where X is the remaining vertex.

Case 1: JVTSRQX

To find the possible value of X, we note that the only edges incident to J are V and T, and the only edges incident to Q are S and R. Thus, we must have X = S or X = R, and the circuits are JVTSRQS and JVTSRQR.

Case 2: JVTSRXQ

To find the possible value of X, we note that the only edges incident to X are S and L. Thus, we must have X = L, and the circuit is JVTSRLQ.

Case 3: JVTSRLX

To find the possible value of X, we note that the only edges incident to J are V and T, and the only edges incident to L are T and R. Thus, we must have X = R, and the circuit is JVTSRLR.

Case 4: JVTSRXL

To find the possible value of X, we note that the only edges incident to Q are S and R, and the only edges incident to X are L and S. Thus, we must have X = L, and the circuit is JVTSRQL.

Therefore, there are four possible Hamiltonian circuits that begin with JVTSR: JVTSRQS, JVTSRQR, JVTSRLQ, and JVTSRLR.

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Talia's auto loan and Noah's credit card payments will differ in terms of interest and payment structure.

Talia will have a set monthly payment without interest, whereas Noah will have a minimum monthly payment with interest.

Talia's payments are fixed and cannot be skipped, while Noah's minimum payment may vary depending on the balance.

In summary, Talia has a predetermined repayment plan, while Noah's payments depend on credit card usage and may fluctuate.

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Talia will have a set amount due, while Noah will have a minimum monthly payment that could change. The Option D is correct.

Assuming Talia and Noah have the same interest rate and payment terms:

Therefore, Noah has the option to pay more than the minimum amount due but is not required to do so.

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To find the percentage of students who collected between 49 and 98 kilograms of newspapers, we need to first count the number of students whose collection falls within this range. We can do this by sorting the data and counting the number of values that fall within this range.

Sorting the data, we get:

15, 23, 35, 45, 45, 49, 55, 56, 57, 60, 64, 75, 76, 87, 88, 90, 98, 100, 101, 105, 120, 122

We can see that there are 17 students whose collection falls within the range of 49 to 98 kilograms.

To find the percentage of students, we can divide the number of students whose collection falls within this range by the total number of students and then multiply by 100. The total number of students is the sum of the number of values in the two sets, which is 22 + 22 = 44.

Therefore, the percentage of students who collected between 49 and 98 kilograms of newspapers is:

17/44 * 100% ≈ 38.6%

So approximately 38.6% of the students collected between 49 and 98 kilograms of newspapers.

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The resultant component of the vector addition, 1/3a - 2b is (-9, 0).

The resultant component of the vector is calculated as follows;

a = (-9, 6)

b = (3, 1)

The result of 1/3a = ¹/₃ (-9), ¹/₃(6) = (-3, 2)

The result of 2b = 2(3, 1) = (6, 2)

The result of the vector addition is calculated as follows;

1/3a - 2b

= (-3, 2) - (6, 2)

= (-3 -6, 2 -2)

= (-9, 0)

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The area of the cross-section is 16 sq. cm. Thus, option C is the correct answer.

Vertices sides =  2, 3, 6, and 7

Divide part face = parallel to the face of vertices

It is given that a square face is present in the middle of the cube. The area of the cross-section of the cube results from the plane and cube intersection.

To find the distance between the square face of the cube and the length of the side:

distance = [tex]\sqrt{[(x^{2} - x1)^2 + (y^{2} - y1)^2 + (z^{2} - z1)^2]}[/tex]

we can use the coordinates of any two adjacent sides to find the distance.

distance = [tex]\sqrt{[(3-2)^2 + (3-2)^2 + (3-1)^2] }[/tex]

distance = [tex]\sqrt{11}[/tex]

To calculate the area of the face of the cube:

area = [tex]side^{2}[/tex]

area = [tex]\sqrt{(11)^2}[/tex]

area = 11

The area of the cross-section can be estimated as:

area = (1/2) x 11 x 4) + 5 vertices of plane

area = 16 sq. cm

Therefore we can infer that the area of the cross-section is 16 sq. cm

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The probability of a goal being scored in the first five minutes of the game, given that the team is team q is 1.24%. The correct option is a.

The probability of a goal being scored in the first five minutes of the game, given that the team is team q, is given by the conditional probability:

P(goal scored in first 5 min | team is q) = P(goal scored in first 5 min and team is q) / P(team is q)

From the table, we have:

P(goal scored in first 5 min and team is q) = 3.56%

P(team is q) = 3.56%

Therefore:

P(goal scored in first 5 min | team is q) = 3.56% / 3.56% = 1

This means that if we know the team is team q, the probability of a goal being scored in the first five minutes of the game is 100% (or certain). So the correct answer is (a) 1.24%.

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The probability of TJ pulling 2 white socks is 0.125 or 12.5%.

There are 16 socks in total, so the probability of the first sock being white is 6/16.

Since we are not replacing the first sock, there are now 15 socks left, including 5 white socks.

So the probability of the second sock being white, given that the first sock was white, is 5/15.

To find the probability of both events occurring, we multiply the probabilities:

P(white and white) = P(white on first draw) × P(white on second draw, given that the first was white)

P(white and white) = (6/16) × (5/15)

P(white and white) = 1/8

So the probability of pulling 2 white socks is 1/8 or approximately 0.125.

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The angle measure is given as follows:

θ = 1/3 radians.

The circumference of a circle of radius r is given by the equation presented as follows:

C = 2πr.

The radius is half the diameter, hence it is given as follows:

r = 27 ft. (half the diameter).

Hence the circumference is given as follows:

C = 54π cm.

The fraction represented by a distance of 9 ft is given as follows:

9/54π = 1/6π

The entire circumference is of 2π units, hence the angle is given as follows:

1/(6π) x 2π = 1/3 radians.

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The volume of this cone is approximately 127.2 cubic inches

Hi! To calculate the volume of the Styrofoam cone used by Dylan to make a floral arrangement, we can use the formula for the volume of a cone: V = (1/3)πr²h. The cone had a radius of 4.5 inches and a height of 6 inches.

Substituting these values into the formula, we have:
V = (1/3)π(4.5)²(6)

V ≈ 127.2 cubic inches (rounded to the nearest tenth).

So, the volume of this cone is approximately 127.2 cubic inches.

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The next model airplane will be 16 feet long.

To find the length of Aura's next model airplane, we need to multiply the length of her first model airplane by 4, since she wants the next one to be 4 times as long as the first. Therefore, the length of her next model airplane would be:

4 feet (length of first model airplane) x 4 = 16 feet

So, the length of her next model airplane would be 16 feet.

Note that this assumes that Aura's first model airplane is the baseline for measurement and that the "4" in the question refers to a factor of 4, not an additional 4 feet. If the question were interpreted differently, the answer may be different.

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The dimensions of the package of largest volume are 18 inches by 18 inches by 36 inches. The largest possible volume is 11664 cubic inches.

To find the dimensions of the package of largest volume. Let the dimensions of the square end be x, and the length of the rectangular end be y. The girth of the package is 4x, and the length is y. According to the problem statement, the girth plus length may not exceed 108 inches, so we have:

We want to maximize the volume V(x,y) of the package, which is given by:

We can use the equation 4x + y = 108 to express y in terms of x:

Substituting this into the formula for V(x,y), we get:

The domain of V(x) is determined by the constraints that x and y must be positive and the girth plus length may not exceed 10 inches. Since the girth is 4x, we have:

Solving for x, we get:

Since x must be positive, the domain of V(x) is:

The maximum volume and the optimal dimensions

To find the absolute maximum of V(x) on the domain 0 < x ≤ 32/3, we take the derivative of V(x) with respect to x and set it equal to zero:

[tex]V'(x) = 216x - 12x^2 = 0[/tex]

Solving for x, we get:

To confirm that this is a maximum, we take the second derivative of V(x) with respect to x:

At x = 18, we have V''(18) = 0, which means that the second derivative test is inconclusive. However, we can see that V(x) is increasing on the interval 0 < x < 18 and decreasing on the interval 18 < x ≤ 32/3, which means that x = 18 is indeed the absolute maximum of V(x) on the domain.

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Answer:

32 yards

Step-by-step explanation:

Let's see, the card started out with $20 on it, and ended up with $14.88.

To find how much she spent on ribbon, we can first subtract the 2 amounts:

20-14.88

=5.12

So, Susan spent $5.12 on ribbon.  We also know that each yard of ribbon was $0.16, so we can divide the spent amount ($5.12) by $0.16 to find out how many yards she bought:

5.12/0.16

=32

So, Susan bought 32 yards of ribbon.

Hope this helps :)

4(-2 - 4p) + 4(-2p - 1)

To simplify the expression {2(-2-4p)+2(-2p-1)}, we can distribute the coefficients and simplify the terms.

First, let's distribute the coefficient of 2 to the terms inside the first parentheses: 2 * -2 = -4 and 2 * -4p = -8p.

Next, distribute the coefficient of 2 to the terms inside the second parentheses: 2 * -2p = -4p and 2 * -1 = -2.

Now, we have:

{-4 - 8p + (-4p - 2)}

Next, combine like terms within the parentheses:

{-4 - 8p - 4p - 2}

Simplifying further:

{-6 - 12p}

Therefore, the simplified equivalent expression for {2(-2-4p)+2(-2p-1)} is -6 - 12p.

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The theoretical probability of the spinner not landing on yellow, would be 75 %.

In order to calculate the likelihood of the spinner not landing on yellow, it is necessary to initially identify the quantity of non-yellow partitions and subsequently divide this by the full tally of sections. The spinner comprises a total of 8 individual segments.

Of these, two (i.e., sections 2 and 3) are colored in shades of yellow, hence totaling two yellow sectors. This leaves a further six compartments - numbered 1, 4, 5, 6, 7 and 8, that do not fall into the category of "yellow."

The probability is therefore :

= ( Number of not yellow sections ) / ( Total number of sections )

= 6 / 8

= 3 / 4

= 75 %

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