Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Select two options.

Answer:

Below

Step-by-step explanation:

Area of a parallelogram is given by:    base * height

   base =  6 m    height = 8 m

     area = 6* 8 = 48 m^2

If 23 fifth grade textbooks were used for the tower and the tower was 57. 1 cm tall, how many sixth grade textbooks were used?

To find out how many sixth grade textbooks were used, divide 57.1 cm by the height of one sixth grade textbook. Then multiply that number by 23 to get the total number of sixth grade textbooks used.

If you want to find out how many sixth grade textbooks were used for the tower, you first have to calculate the height of one sixth grade textbook. Once you have that measurement, you can divide 57.1 cm by that height to get the number of sixth grade textbooks used in the tower. To get the total number of textbooks used, you then need to multiply the number of textbooks per tower by 23, since 23 fifth grade textbooks were used. In other words, if the height of one sixth grade textbook is h, the number of sixth grade textbooks used is (57.1 cm / h) * 23. This equation gives you the number of sixth grade textbooks used, based on the height of one sixth grade textbook and the total height of the tower.

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The constraints as a system of linear inequalities include the following;

x + y ≤ 180

x ≥ 40

y ≥ 40

3x + 4y ≤ 640

75x + 60y ≤ 12,900

The solution set for the system of linear inequalities is shown in the coordinate plane below.

In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of SOS Smartcall produced in one day and number of SOS Basic produced in one day respectively, and then translate the word problem into algebraic equation as follows:

Based on the information provided about this cell phone company, the constraints can be written as a system of linear inequalities as follows;

x + y ≤ 180

x ≥ 40

y ≥ 40

3x + 4y ≤ 640.

75x + 60y ≤ 12,900

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Answer:

3.33 minutes

Step-by-step explanation:

first know that the escalator can move 30 people in 1 minute.

then, we can write in a mathematical expression as:

30 people = 1 minute

100 people = ? minutes.

cross multiply, i.e. 30×? = 100×1

therefore, ? = 100/30

? = 3.33 minutes.

therefore, it's going to take 3.33 minutes for the escalorr to take 100 people.

The prοbabilities fοr all pοssible values οf the randοm variable x are:

P(x) = 0.1785 P(x) = 0.3911 P(x) = 0.3462 P(x) = 0.1124 P(x) = 0.0118.

The jοint prοbability is the likelihοοd οf twο (οr mοre) events. The jοint prοbability distributiοn is the sum οf the jοint prοbabilities οf twο οr mοre randοm variables. Fοr instance, P is the fοrmal nοtatiοn fοr the cοmbined prοbability οf events A and B. (A and B)

We can use the fοllοwing fοrmula tο find the prοbabilities fοr all pοssible values οf the randοm variable, x, in a binοmial situatiοn where n = 4 and = 0.35:

P(x) = (n chοοse x)[tex]* \pi ^x * (1-\pi)^{(n-x)[/tex]

where "n select x" is the binοmial cοefficient, which equals n! / (x! * (n-x)!).

Then, fοr x = 0, 1, 2, 3, and 4, we can cοmpute P(x) as fοllοws:

P(x=0) = (4 chοοse 0) [tex]* 0.35^0 * 0.65^4 = 0.1785[/tex]

P(x=1) = (4 chοοse 1) [tex]* 0.35^1 * 0.65^3 = 0.3911[/tex]

P(x=2) = (4 chοοse 2) [tex]* 0.35^2 * 0.65^2 = 0.3462[/tex]

P(x=3) = (4 chοοse 3) [tex]* 0.35^3 * 0.65^1 = 0.1124[/tex]

P(x=4) = (4 chοοse 4) [tex]* 0.35^4 * 0.65^0 = 0.0118[/tex]

When we rοund these numbers tο fοur decimal places, we get:

P(x=0) = 0.1785

P(x=1) = 0.3911

P(x=2) = 0.3462

P(x=3) = 0.1124

P(x=4) = 0.0118

As a result, the prοbabilities fοr all pοssible values οf the randοm variable x are as fοllοws:

P(x=0) = 0.1785

P(x=1) = 0.3911

P(x=2) = 0.3462

P(x=3) = 0.1124

P(x=4) = 0.0118

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Answer:

2,3,4,10

Step-by-step explanation:

DIVIDE METERS BY 1000 SINCE KILO MEANS 1000

Answer:2000m=2km

3000m=3km

4000m=4km

10000m=10

Step-by-step explanation:

1kilometers is equal to 1000 meters. So, we divide meters with 1000 in order to find kilometers.

The correct answer is option 1) "There is no correlation between the amount of sleep and the number of calories burned."

Based on the information provided, the yoga instructor can conclude that there is no correlation between the amount of sleep and the number of calories burned during class. Therefore, the correct answer is

option 1) "There is no correlation between the amount of sleep and the number of calories burned."

Option 2) suggests that further studies would be needed to determine causation, but since there is no correlation found in this study, there is no basis for further investigation into causation.

Option 3) suggests that there is a correlation between the amount of sleep and the number of calories burned and that there is likely causation. However, this conclusion contradicts the information provided, which indicates that there is no correlation between these variables.

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The density of the wax is 1.8 g/ cm ³. this means that for every cubical centimeter of the wax, it has a mass of 1.8 grams.

The density of a material is defined as its mass in line with unit volume, generally expressed in grams in line with cubical centimeter( g/ cm ³). To compute the density of the presented wax, we need to divide its mass by applying its volume.

Presented that the volume of the wax is2.5 cm ³ and its mass is 4.5 g, we will compute its density as

Density = Mass/ volume = 4.5 g/2.5 cm ³ = 1.8 g/ cm ³

Thus, the density of the wax is 1.8 g/ cm ³. this means that for every cubical centimeter of the wax, it has a mass of 1.8 grams. knowing the density of a fabric can help in relating the cloth or in predicting its deportment in distinct qualifications.

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The direction of the resulting force upon the piling is approximately 298.85 degrees

We can use vector addition to find the direction of the resulting force. Let's call the force exerted by the first bulldozer F1, and the force exerted by the second bulldozer F2. We can represent each force as a vector with a magnitude and direction.

F1 has a magnitude of 1850 pounds and points in a westerly direction. We can represent it as a vector (-1850, 0).

F2 has a magnitude of 3250 pounds and points in a northerly direction. We can represent it as a vector (0, 3250).

To find the resulting force, we need to add these two vectors. We can do this by adding the x-components and the y-components separately.

The x-component of the resulting force is -1850 (from F1) plus 0 (from F2), which is -1850.

The y-component of the resulting force is 0 (from F1) plus 3250 (from F2), which is 3250.

So the resulting force is a vector with components (-1850, 3250). We can find the direction of this vector by taking the inverse tangent of the ratio of the y-component to the x-component.

tan(theta) = (3250) / (-1850)

theta = -61.15 degrees

The negative sign indicates that the resulting force points to the southwest. To get the angle in the range of 0 to 360 degrees, we can add 360 degrees to the angle if it is negative.

theta = 360 - 61.15

theta = 298.85 degrees

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Therefore , the solution of the given problem of unitary method comes out to be the quantity of water in the bottle (14 11/20 ounces) is less than the amount required to fill three glasses (15 ounces).

By applying what was acquired and bringing this variable tactic into practise, along with all supporting information from two people who used a particular tactic, the work can be finished. In other words, if the wanted expression result occurs, either the entity specified in the formula will also be discovered, or both crucial processes will actually ignore the colour. A refundable fee of Rupees ($1.01) may be necessary for forty pencils.

Here,

The water bottle is currently 3/5 full and contains 24 1/4 ounces of water.

By dividing the bottle's capacity by the percentage that indicates how filled it is, we can determine how much water is inside:

=> 24 1/4 × 3/5 = (97/4) × (3/5)

=> 291/20 = 14 11/20

Therefore, there are 14 11/20 ounces of water in the water container.

We want to fill three cups, each of which needs five ounces of water, so we will need:

=>  5 x 3 = 15 ounces

There isn't enough water in the bottle to fill three glasses with 5 ounces each because the quantity of water in the bottle (14 11/20 ounces) is less than the amount required to fill three glasses (15 ounces).

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Answer:

The answer rounded is 6.10, but the actual answer would be 6.095

Step-by-step explanation:

5.75 X 0.06 = 0.345 || 0.345+5.75 = 6.095

A 6.10

According to the laws of stuff a calculate of 5.75 to the percentage of 6 is 6.10

Answer:

Below

Step-by-step explanation:

Density =       mass  

                     volume

Density = 21.1 kg / 9.37 m^3 = ~  2.3 kg/m^3

The given inequality is true when w is greater than 5: w > 5. (option 4)

To solve the inequality, we can simplify the expression inside the absolute value brackets by distributing the negative sign and combining like terms:

Now we can split the inequality into two cases: 14w - 2 > 7 and -(14w - 2) > 7. Solving each case for w gives:

14w - 2 > 7

14w > 9

w > 9/14

-(14w - 2) > 7

-14w + 2 > 7

-14w > 5

w < -5/14

So the solution to the inequality is w > 9/14 or w < -5/14. However, we are given that w is greater than 5, so the only valid solution is w > 5.

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Complete Question:

Which inequality is true when the value of w is 13?

The circumference of the circle with diameter 4 is 12.56 units using 3.14 as the value of π.

The circumference of a circle is given by the formula C = πd, where d is the diameter of the circle. If the diameter of the circle is given as 4, then we can substitute it into the formula to get:

C = πd

C = π(4)

Since we are given to use 3.14 for π, we can substitute it into the formula to get:

C = 3.14(4)

C = 12.56

It's important to note that the circumference of a circle is the distance around the edge or perimeter of the circle.

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The rate of decrease of volume of the sphere when its diameter is 6 cm is -96π cubic cm/min.

Given that the snowball is a sphere, we can use the formula for the volume of a sphere.

The formula for the volume of a sphere is

V = 4/3 πr³

We need to find out the rate of decrease of volume when the diameter is 6 cm.

To find the rate of decrease of volume, we need to differentiate the above formula. Differentiating the above formula w.r.t. time, we get

dV/dt = 4/3 π(3r²)(dr/dt)

Where r is the radius of the sphere and dr/dt is the rate of change of the radius.

Let d be the diameter of the sphere. Then we can write,r = d/2

Also, given that dr/dt = -2cm/min

Substituting the values in the equation for the rate of decrease of volume,

dV/dt = 4/3 π(3(d/2)²)(-2) = -8π/3 d²

As the diameter of the sphere is 6 cm, d = 6 cm.Substituting the value in the equation above, we get

dV/dt = -8π/3 (6)² = -96π cubic cm/min

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Answer:

343 cubic meters.

Step-by-step explanation:

To find the volume of a cube given its surface area, we need to first find the length of one of its sides.

The formula for the surface area of a cube is:

SA = 6s^2

where SA is the surface area and s is the length of one of the cube's sides.

We are given that the surface area is 294 square meters, so we can set up the equation:

294 = 6s^2

Simplifying, we get:

49 = s^2

Taking the square root of both sides, we get:

s = 7

So the length of one of the cube's sides is 7 meters.

To find the volume of the cube, we use the formula:

V = s^3

Substituting in 7 for s, we get:

V = 7^3 = 343

Therefore, the volume of the cube is 343 cubic meters.

Answer:

343m³

Step-by-step explanation:

Surface area of a cube is A = 6a²

6a² = 294

Divide both sides by 6

a² = 49

Square root of both sides

a =7

Substitute the value of a into volume

Volume of Cube V = a³

V = 7x 7x7

V = 343m³

Answer: line A

Step-by-step explanation:

2x is the slope and -1 is the y-intercept
2x for the slope, also 2/1x (meaning rising up 2 places for every one place on the x axis).
Line A is the only line who has 2x for the slope.
ANSWER: LINE (A)

Answer:

Line a

Step-by-step explanation:

The equation is y= 2x - 1 so....

Slope = 2

Y-intercept = -1

Slope can be put as Rise/ Run ( up/ side)

This means the slope can be written as 2/1

Line a has a slope of 2/1 from the point -1 so the answer is line a

Random assignment in this experiment is important to avoid bias.

By randomly assigning participants to diets with different levels of protein, the researchers are ensuring that any differences in outcomes are due to the diet, and not because of any individual characteristics of the participants. Random assignment helps to ensure that the groups being compared in the experiment are similar and that any differences seen in outcomes are due to the protein level and not other factors. Random assignment helps to eliminate any bias that could be introduced if the participants were assigned to diets based on their own characteristics. This helps to ensure that the results of the experiment are valid and accurate.

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Therefore , the solution of the given problem of angle comes out to be the smaller angle will therefore rotate through one unit angle each time.

In Euclidean mathematics, a tilt is a shape consisting of two sides, or cylindrical faces, that separate at the wall's centre and its apex. Two rays may come together at their intersections to create an angle. Another result of two things interacting is an angle. They are characterized as dihedral angles. Two line beams can be arranged in different ways at their extremities to produce a two-dimensional curve.

Here,

A small pattern block is a geometric structure made up of six congruent isosceles triangles organised around a regular hexagon with six equal-length sides.

Two of the angles in an isosceles triangle are identical in size, while the third angle varies.

We need to first create a frame of reference in order to determine how many unit angles the smaller angle of a small pattern block turns through.

Assume that we begin by placing the little pattern block in its initial location with one of its sides vertically aligned.

This results in one of the isosceles triangles being vertically aligned after turning the block.

The smaller angle will therefore rotate through one unit angle each time if we continue to rotate the small pattern block anticlockwise by one-sixth of a complete revolution for each subsequent turn.

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Answer:

250 ml

Step-by-step explanation:

300ml + 250ml =550ml

550ml - 200ml=350ml

350ml - 150ml + 100ml=300ml

300ml - 50ml=250ml

The solution to the inequality expression given as x + 2 < 5 is x < 3

Inequality expressions refer to statements in mathematics that use symbols like <, >, ≤, or ≥ to compare two values.

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

x + 2 < 5

Subtract 2 from both sides of the inequality expression

So, we have the expression below

x + 2 < 5 - 2

Evalaute the like terms

x < 3

This means that, the solution is x < 3

The graph of the inequality is added as an attachment

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a)   result does not contradict

To show that p(your winning) <1/2, we need to consider that the last piece you have on your board could land on various positions. Depending on the position, your opponent could end up winning even if you land a higher value on the dice. Therefore, the probability of your winning is less than 1/2. This shows that a double is not called for.Exercise 3.1 states that the expected count on a backgammon roll is 8 6 1, exceeding the 8 points you need to win. This is true since the expected count means the average count you are expected to land on if you roll the dice. It does not mean that every roll will result in a count higher than 8, and it does not mean that you will always win. The expected count is simply a statistical measure of the possible outcomes of rolling the dice. Therefore, this result does not contradict the fact that p(your winning) <1/2.

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Answer:

The error in Amanda's calculation is in line 2, where she incorrectly subtracted 6x instead of adding 6x, as well as incorrectly subtracting 24 instead of adding 24.  Amanda also omitted the addition sign in line 3 of her calculations.

Step-by-step explanation:

To factor a quadratic polynomial in the form ax² + bx + c, find two numbers that multiply to ac and sum to b.

Therefore, for the given polynomial 4x² + 22x + 24:

⇒ ac = 4 · 24 = 96

⇒ b = 22

The factors of 96 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, and 96.

Therefore, the factor pair that sums to 22 is 16 and 6.

Rewrite b as the sum of these two numbers:

⇒ 4x² + 22x + 24

⇒ 4x² + (16 + 6)x + 24

⇒ 4x² + 16x + 6x + 24

Therefore, the error in Amanda's calculation is in line 2, where she incorrectly subtracted 6x instead of adding 6x, as well as incorrectly subtracting 24 instead of adding 24.  Amanda also omitted the addition sign in line 3 of her calculations.

The correct calculation is as follows:

   4x² + 22x + 24

⇒ 4x² + 16x + 6x + 24

⇒ 4x(x + 4) + 6(x + 4)

⇒ (4x + 6)(x + 4)

Given :-

To find:-

Answer:-

Given polynomial to us is ,

[tex]\implies 4x^2 + 22x + 24 \\[/tex]

With respect to the standard form of polynomial ax² + bx + c , we have;

Step 1 :- Split the middle term into two parts p and q such that p × q = a × c and p + q = b

Such two numbers are 16 and 6 .

Hence, we can rewrite it as ,

[tex]\implies 4x^2 + 16x + 6x + 24 \\[/tex]

But Amanda wrote [tex] 4x^2+16x - 6x + 24[/tex] , so she made a mistake here by writing +6x as -6x .

Step 2:- Factor out the common terms .

[tex]\implies 4x( x + 4) + 6(x+4) \\[/tex]

Step 3 :- Take out [tex] x+4[/tex] as common.

[tex]\implies (x+4)(4x+6) \\[/tex]

This is our required factored form .

Hence we can see that Amanda made a mistake only in splitting the term term .

and we are done!

Case 1: The value of the vector B is equal to [tex]\overrightarrow {B} = (7, - 20)[/tex].

Case 2: The values of variables m and n from vector operations are - 5 and - 4, respectively.

In this problem we find two cases of operations between two vectors. According to linear algebra, there are two fundamental operations:

Case 1:

The value if vector B can be found by following operation:

[tex]\overrightarrow{B} - \overrightarrow {A} = (5, - 5)[/tex]

[tex]\overrightarrow {B} = \overrightarrow {A} + (5, - 5)[/tex]

[tex]\overrightarrow{B} = (2, - 4) + (5, - 5)[/tex]

[tex]\overrightarrow{B} = (2 + 5, - 4 - 5)[/tex]

[tex]\overrightarrow {B} = (7, - 20)[/tex]

Case 2:

First, determine the expression for the given operator:

2 · a - 2 · b = 2 · (- 3, m) - 2 · (n, - 4)

2 · a - 2 · b = (- 6, 2 · m) + (- 2 · n, 8)

2 · a - 2 · b = (- 6 - 2 · n, 2 · m + 8)

Second, find the values of m and n:

(- 6 - 2 · n, 2 · m + 8) = (2, - 2)

- 6 - 2 · n = 2

- 3 - n = 1

n = - 4

2 · m + 8 = - 2

- m - 4 = 1

m = - 5

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The probability density function (PDF) is a mathematical function that describes the probability of a random variable taking a certain value. It is a measure of the probability of a given outcome within a given range.

Probability is a branch of mathematics used to quantify the likelihood of an event occurring. It is used to calculate the chances of a certain outcome or a combination of outcomes in a given situation. Probability is expressed as a number between 0 and 1, with 0 representing an impossible event and 1 representing a certain event. Probability is used to make predictions, analyze data, and understand the complexity of the world around us.

b. The probability of generating a random number between 0.25 and 0.85 (to 1 decimal place) is 0.6.

c. The probability of generating a random number with a value less than or equal to 0.4 (to 1 decimal place) is 0.4.

d. The probability of generating a random number with a value greater than 0.6 (to 1 decimal place) is 0.4.

e. The mean of the given set of 50 random numbers is 0.527084 and the standard deviation is 0.307766.

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A mathematical function known as the probability density function (PDF) calculates the likelihood that a random variable will have a particular value. It is a measurement of the likelihood of a specific outcome within a specific range.

What is probability?

Mathematics' branch of probability is used to determine how likely an event is to occur. It is employed to determine the probabilities of a specific outcome or a mixture of outcomes in a particular circumstance. A number between 0 and 1 is used to represent probability, with 1 denoting a certain event and 0 denoting an impossibility. To generate predictions, examine data, and comprehend how complicated the world is around us, probability is used.

b. The probability of generating a random number between 0.25 and 0.85 (to 1 decimal place) is 0.6.

c. The probability of generating a random number with a value less than or equal to 0.4 (to 1 decimal place) is 0.4.

d. The probability of generating a random number with a value greater than 0.6 (to 1 decimal place) is 0.4.

e. The mean of the given set of 50 random numbers is 0.527084 and the standard deviation is 0.307766.

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The probability a male's growth plate will fuse before age 17 is 0.1112, for this we have to learn probability.

Probability of an event is a number that shows what is the possibility of an event occur.

we have to take entire area under the standardized curve from and including the left tail up to the z-score for 17.

[tex]= \frac{(17 - 18.6 years)}{1.308333 years}[/tex]

[tex]= \frac{(-1.6) }{1.308333}[/tex]

[tex]= -1.22293[/tex]

[tex]= approx. 1.22.[/tex]

The area from the mean to +ve or -ve 1.22 is .3888

We have to subtract .3888 from area from the tail to the mean (.5000) to get area from the tail to 1.22.

So, the growth plates will fuse before age 17 [tex]= .5000-.3888 = 0.1112[/tex]

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The total area of gray sections of the target is  1017 square inches. The correct option is (D).

To find the total area of the gray sections of the target, we need to first find the areas of the gray rings. We can do this by subtracting the area of the smaller circle from the area of the larger circle for each ring.

The area of a circle is given by the formula A = πr^2, where r is the radius.

For the outer gray ring, the radius is 1.5 feet. So, the area of the gray ring is:

A_gray_outer = π(1.5)^2 - π(1)^2

= 7.06858 - 3.14159

= 3.92699 square feet

For the middle gray ring, the radius is 1 foot. So, the area of the gray ring is:

A_gray_middle = π(1)^2 - π(0.5)^2

= 3.14159 - 0.78540

= 2.35619 square feet

For the inner gray ring, the radius is 0.5 feet. So, the area of the gray ring is:

A_gray_inner = π(0.5)^2 - 0

= 0.78540 square feet

The total area of the gray sections of the target is the sum of these three areas:

A_total_gray = A_gray_outer + A_gray_middle + A_gray_inner

= 3.92699 + 2.35619 + 0.78540

= 7.06858 square feet

To convert this to square inches, we multiply by the conversion factor (12 inches/foot)^2:

A_total_gray = 7.06858 * (12)^2

= 1016.7048 square inches

Rounding this to the nearest square inch gives:

A_total_gray ≈ 1017 square inches

So the correct answer is (D). 1017 square inches.

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Tom is working two jobs to save money for prom, walking a neighbor's dog for $6.50 an hour and washing cars for $7 an hour, to make at least $91.

Tom is working to put money aside for the prom.. His mother has instructed him that in order to keep up with his schoolwork, he may only work a maximum of 15 hours each week. Tom has made the decision to wash cars for $7 per hour and walk his neighbor's dog for $6.50 per hour in order to achieve this aim. For his prom expenditures, he will need to earn at least $91. He must put in a maximum of 13.2 hours of work to earn $91. This implies he can stroll a dog for 8.4 hours and wash vehicles for 4.8 hours. He can also decide to simply perform one job; but, in order to earn the appropriate amount, he would need to walk his neighbor's dog for 12 hours.

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If there is a 5% chance that none of the items on a scratch-off lottery ticket will be a winner, the probability that at least one of the scratch-off items will win is 95%.

If there is a 5% chance that none of the items on a scratch-off lottery ticket will be a winner, then the probability of winning on any one item is 1 - 0.05 = 0.95 (i.e., a 95% chance of winning on any one item).

The complement rule, which states that the probability of an event occurring is equal to 1 minus the probability of the event not occurring, can be used to determine the likelihood that at least one of the scratch-off items will win. In this case, the event we are interested in is winning on at least one item. The complement of this event is not winning on any item.

So, the probability of winning on at least one item is:

1 - 0.05 = 0.95

Therefore, there is a 95% chance that at least one of the items on a scratch-off lottery ticket will win.

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